A PLC anti-misconnection training device applied to teaching

Abstract

The present invention relates to a PLC anti-misconnection training device applied to teaching, belonging to the field of training device manufacturing. Technical solution: It includes a training table, an electrical installation execution area, and an embedded computer programming and detection area. The main training function of the electrical installation execution area is wiring training, and the main training functions of the embedded computer programming and detection area are program writing and wiring status detection. When the training device completes wiring, the wiring status detection system can be started, which can complete the acquisition of the wiring status of electrical equipment and compare it with the correct wiring relationship pre-input into the system, so as to complete the inspection of all wiring statuses of the training device. If there is a wiring error, the system will activate the alarm function to prompt the operator to prevent damage to electrical equipment and endangerment to personal safety caused by the power-on of electrical equipment under the condition of incorrect wiring, reducing economic losses and social impacts caused.

Description

Technical Field

[0001] The present invention relates to a PLC anti-misconnection training device for teaching, belonging to the field of manufacturing training devices. Background Art

[0002] In higher vocational education, in order to enable students to more comprehensively understand and master the functions and wiring principles of various electrical components such as PLCs, frequency converters, motors, etc., each university provides a large number of training devices for students to practice wiring, control, and debugging. The patent with the authorization announcement number: CN211857812U discloses a "PLC electrical control programming and application training platform for teaching", which can complete practical training exercises such as wiring, programming, and power-on debugging of common classic circuits.

[0003] However, during the training courses, due to the large class size, generally, the teacher provides the wiring diagram and task requirements of the learning tasks, and then the students wire by themselves. It is impossible for the teacher to always monitor each student and each device. Once a student makes a mistake in wiring, after power-on, at best, the current-limiting components will be burned, and at worst, core valuable devices such as PLCs and frequency converters will be burned. Moreover, maintenance takes time. Once the device fails, it directly leads to a decrease in the device utilization rate and insufficient practice for students.

[0004] The above situations not only cause economic losses due to device damage, but also endanger the safety of operators and affect production and training efficiency.

[0005] In view of the above problems, after researching the current conventional electrical control systems and commonly used training devices in schools, a PLC anti-misconnection training device for teaching is proposed. Summary of the Invention

[0006] The present invention provides a PLC anti-misconnection training device for teaching. Through the analysis and research of existing devices, a training device with a wiring status detection function is designed. When the wiring of the training device is completed, the wiring status detection system can be started to complete the inspection of all wiring statuses of the training device and compare them with the correct wiring status entered. If there is a wiring error, the system will start the alarm function to prompt the operator, so as to prevent the electrical equipment from being damaged and endangering the safety of personnel due to the power-on of the training device under the condition of incorrect wiring, avoiding potential safety hazards, improving the service life and utilization rate of the training device, and solving the problems existing in the background art.

[0007] To achieve the above object, the technical solution of the present invention is: a PLC anti-misconnection training device for teaching, including a training table, an electrical installation execution area, and an embedded computer programming and detection area. The training table includes the top and bottom of the tabletop. On the left side of the top of the tabletop, an electrical installation execution area is fixedly installed. On the right side of the top of the tabletop, an embedded computer programming and detection area is fixedly installed. At the bottom of the tabletop, a bottom box is provided. On the left side of the bottom of the tabletop, a drawer is provided.

[0008] The main training function of the electrical installation execution area is wiring training. The electrical components in the electrical installation execution area are wired according to the wiring diagram. If the students in this area make wiring mistakes during the wiring practice, it often causes component burnout and even safety accidents after power-on. The electrical installation execution area includes a PID training unit, a solenoid valve, a V power distribution terminal block, an encoder, a stepper driver, a stepper motor, an asynchronous motor, a DC motor, a vacuum generator, a circuit breaker, a ground wire terminal, a fuse, a training chute, a banana socket, an indicator light, a button, a photoelectric switch, a fiber optic sensor, a stepper pneumatic manipulator, a proximity switch, a synchronous belt, a linear guide slider, and a synchronous belt pulley.

[0009] The main training functions of the embedded computer programming and detection area are program writing and wiring status detection. The PLC and frequency converter programs are written through a computer, combined with the wiring of the components in the electrical installation execution area. Finally, the correctness of the wiring and program writing is verified through the operating mechanism such as the speed of the DC motor and the signals of the sensors. The embedded computer programming and detection area includes a microcomputer host, an input control module, an output control module, a keyboard, a display screen, a computer mouse, a double-line detection terminal, a buzzer, a solid-state relay, a PLC, a frequency converter, and an alarm light. The double-line detection terminal includes a cold-pressed terminal, an input signal wire, and an output signal wire. The input signal wire and the output signal wire are fixedly connected and conduct with the cold-pressed terminal.

[0010] The output control module receives instructions from the microcomputer host and feeds back operation information to the microcomputer host. Each output port of the output control module is connected to the input signal wire of the double-line detection terminal through a signal wire and a solid-state relay. After the microcomputer host issues an instruction, the output control module starts to work.

[0011] The input control module receives instructions from the microcomputer host and feeds back detection information to the microcomputer host. Each input port of the input control module is connected to the output signal wire of the double-line detection terminal through a signal wire and a solid-state relay. After the microcomputer host issues an instruction, the input control module starts to work.

[0012] The microcomputer host controls the output control module and the input control module, and is capable of receiving the information reported by the output control module and the input control module. The microcomputer host can receive the input information of the keyboard, and compare the wiring information reported by the output control module and the input control module with the correct wiring information input by the keyboard to complete the judgment of the wiring state. In case of incorrect wiring, it controls the alarm lamp and the buzzer to emit audible and visual alarm signals.

[0013] The keyboard completes the input of information. The user inputs the correct wiring information of the electrical system on the keyboard and reports it to the microcomputer host.

[0014] The display screen receives the information from the microcomputer host and displays information such as the wiring state sent by the microcomputer host.

[0015] The solid-state relay is connected in series with the input signal line and the output signal line of the output control module, the input control module and the double-line detection terminal. When detecting the wiring state, the solid-state relay closes to complete the connection of the detection loop and disconnects after the test is correct. The electrical equipment is powered on for operation. Since the working voltage of the electrical equipment is relatively high, after the solid-state relay disconnects, it can effectively isolate the wiring state detection system from the electrical equipment and prevent the wiring state detection system from being damaged due to excessive voltage.

[0016] The alarm lamp and the buzzer are connected to the microcomputer host and flash intermittently in case of incorrect wiring to remind the equipment installation and debugging personnel, so as to avoid powering on the equipment in case of incorrect wiring and bringing potential safety hazards to the equipment and the staff.

[0017] This training equipment basically meets the requirements of general teaching training. When a certain specific skill is required for teaching or social employment needs, combined with the functions of the training equipment, training projects are designed to complete the training exercises.

[0018] Before the training equipment leaves the factory, a double-line detection terminal is fixedly connected to all the wiring terminals of all the components in the electrical installation execution area, the embedded computer programming area and the detection area, and the wiring terminal and the connected double-line detection terminal are uniformly numbered. Then, the output port of the output control module, the input port of the input control module corresponding to the double-line detection terminal are marked with this number. The corresponding information of the output port of the output control module, the input port of the input control module of each numbered double-line detection terminal and the wiring terminal of the electrical equipment is input and uploaded to the microcomputer host through the keyboard. During the input process, the input information is displayed on the display screen in real time to prevent incorrect information.

[0019] When using the training device, the teacher uploads the correct wiring relationship and number correspondence of the experimental task to the microcomputer host through the keyboard. Students connect according to the wiring diagram of the training task. After the wiring personnel complete the wiring, the wiring status detection is started. First, the solid-state relay is closed. After the output control module receives the microcomputer host instruction, the output control module output port No. 1 outputs a high level, and other output ports output a low level. The input control module detects all input ports except the input port No. 1. If other input ports have a high level, it proves that the electrical equipment terminal corresponding to the input port No. 1 is connected with the electrical equipment terminal corresponding to the high-level output port number. All ports of the output control module and the input control module are traversed through the above process in turn, and the real wiring status in the current state can be obtained. The microcomputer host compares the real wiring relationship with the entered correct wiring relationship to complete the judgment of the wiring relationship. If the wiring is correct, the display screen shows that the wiring is successful, the solid-state relay is disconnected, and the training equipment is powered on and works normally. Observe the training phenomenon. If the wiring is wrong, the alarm light is driven, the buzzer sends an audible and visual alarm signal, and the terminal number of the wrong wiring is displayed on the display screen.

[0020] This training equipment can complete the collection of the wiring status of the training equipment and can compare it with the correct wiring relationship pre-input into the system, so as to complete the inspection of all wiring status of electrical equipment. If there is a wiring error, the system will activate the alarm function to prompt the operator to prevent the electrical equipment from being powered on due to incorrect wiring, causing equipment damage and endangering personnel safety, thereby reducing economic losses and social impacts.

[0021] As a preferred embodiment, a further technical solution of the present invention is: the four corners of the bottom of the table are fixedly connected with pillars, the bottom of the pillars are movably connected with universal wheels through a rotating shaft, there are two drawers, the inner cavities of the drawers are respectively placed with electrician tools and training test lines, the left side of the bottom box surface is respectively fixedly connected with a power interface and an air source interface, and the left side of the bottom box is fixedly connected with an air source triplex. The training table uses 220V, 50HZ AC, and its 220V power distribution circuit is arranged in a closed cabinet at the back.

[0022] Preferably, a further technical solution of the present invention is: a terminal block is installed on the upper side of the electrical installation execution area on the top of the table, and the wiring terminals of all components in the electrical installation execution area are routed through the inner cavity of the training table through wires and connected to the lower terminals of the terminal block. The upper terminals of the terminal block are connected to cold-pressed terminals with double-wire detection terminals, and the wires for detecting the wiring status are separated from the wires for wiring exercises in the training process, so as to avoid accidentally removing the wires for detecting the wiring status of the training equipment when students remove the wires after the training.

[0023] Preferably, a further technical solution of the present invention is that the output control module and the input control module are multi-pin STM32 chip circuit boards.

[0024] Preferably, a further technical solution of the present invention is that the chip model in the multi-pin STM32 chip circuit board is STM32F103ZCT6.

[0025] Preferably, a further technical solution of the present invention is that the input signal line and the output signal line are fixedly connected to the cold pressure terminal by soldering with a soldering iron.

[0026] The beneficial effect of the present invention is that by designing a PLC anti-misconnection training device applied to teaching, when the wiring of the training device is completed, the wiring state detection system can be started, which can complete the acquisition of the wiring state of the electrical equipment and can be compared with the correct wiring relationship pre-input into the system, so as to complete the inspection of all wiring states of the training device. If there is a wiring error, the system will start the alarm function to prompt the operator to prevent damage to the electrical equipment and endangerment to personal safety caused by the power-on of the electrical equipment in the case of incorrect wiring, reducing economic losses and social impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0028] Figure 1 It is a schematic front view of the training device of the present invention;

[0029] Figure 2 It is a block diagram of the wiring detection system of the training device of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the double-line detection terminal of the training device of the present invention;

[0031] In the figure: Electrical installation execution area - 1000, PID training unit - 1001, solenoid valve - 1002, V power distribution terminal block - 1003, encoder - 1004, stepper driver - 1005, stepper motor - 1006, asynchronous motor - 1007, DC motor - 1008, embedded computer programming and detection area - 2000, microcomputer mainframe - 2001, input control module - 2002, output control module - 2003, keyboard - 2004, display screen - 2005, computer mouse - 2006, double - line detection terminal - 2007, cold - pressed terminal - 2008, input signal wire - 2009, output signal wire - 2010, buzzer - 2011, solid - state relay - 2012, PLC - 2013, frequency converter - 2014, alarm lamp - 2015, bottom box - 3000, drawer - 4000, support pillar - 5000, universal wheel - 6000, power supply interface - 7000, air source interface - 8000, terminal block - 9000. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Example 1, please refer to Figures 1-3 , A PLC anti - wrong connection training device for teaching, including a training table, an electrical installation execution area 1000 and an embedded computer programming and detection area 2000. The training table includes the top and bottom of the tabletop. On the left side of the top of the tabletop, an electrical installation execution area 1000 is fixedly installed, and on the right side of the top of the tabletop, an embedded computer programming and detection area 2000 is fixedly installed. A bottom box 3000 is arranged at the bottom of the tabletop, and a drawer 4000 is arranged on the left side of the bottom of the tabletop.

[0034] The main training function of the electrical installation execution area 1000 is wiring training. Each electrical component in the electrical installation execution area 1000 is wired according to the wiring diagram. If students make wiring mistakes during wiring practice in this area, it often causes component burnout and even safety accidents after power - on. The electrical installation execution area 1000 includes a PID training unit 1001, a solenoid valve 1002, a V power distribution terminal block 1003, an encoder 1004, a stepper driver 1005, a stepper motor 1006, an asynchronous motor 1007, a DC motor 1008, a vacuum generator, a circuit breaker, a ground wire terminal, a fuse, a training material trough, a banana socket, an indicator light, a button, a photoelectric switch, a fiber optic sensor, a step - in pneumatic manipulator, a proximity switch, a synchronous belt, a linear guide slider and a synchronous belt pulley.

[0035] The main training functions of the embedded computer programming and detection area 2000 are program writing and wiring status detection. PLC and frequency converter programs are written through a computer, combined with the wiring of components in the electrical installation execution area 1000. Finally, the correctness of the wiring and program writing is verified through the operating mechanisms such as the speed of the DC motor and the signals of the sensors. The embedded computer programming and detection area 2000 includes a microcomputer host 2001, an input control module 2002, an output control module 2003, a keyboard 2004, a display screen 2005, a computer mouse 2006, a double-line detection terminal 2007, a buzzer 2011, a solid-state relay 2012, a PLC 2013, a frequency converter 2014, and an alarm light 2015. The double-line detection terminal 2007 includes a cold-press terminal 2008, an input signal wire 2009, and an output signal wire 2010. The input signal wire 2009 and the output signal wire 2010 are fixedly connected and conduct with the cold-press terminal 2008.

[0036] The output control module 2003 receives instructions from the microcomputer host 2001 and feeds back operation information to the microcomputer host 2001. Each output port of the output control module 2003 is connected to the input signal wire 2012 of the double-line detection terminal 2007 through a signal wire and a solid-state relay 2012. After the microcomputer host 2001 issues an instruction, the output control module 2003 starts to work.

[0037] The input control module 2002 receives instructions from the microcomputer host 2001 and feeds back detection information to the microcomputer host 2001. Each input port of the input control module 2002 is connected to the output signal wire 2010 of the double-line detection terminal 2007 through a signal wire and a solid-state relay 2012. After the microcomputer host 2001 issues an instruction, the input control module 2002 starts to work.

[0038] The microcomputer host 2001 controls the output control module 2003 and the input control module 2002, and can receive the information reported by the output control module 2003 and the input control module 2002. The microcomputer host 2001 can receive the input information of the keyboard 2004, and compare the wiring information reported by the output control module 2003 and the input control module 2002 with the correct wiring information input by the keyboard 2004 to complete the judgment of the wiring status, and control the alarm light 2015 and the buzzer 2011 to emit audible and visual alarm signals in case of incorrect wiring.

[0039] The keyboard 2004 completes the input of information. The user inputs the correct wiring information of the electrical system on the keyboard 2004 and reports it to the microcomputer host 2001.

[0040] The display screen 2005 receives the information from the microcomputer host 2001 and displays information such as the wiring status sent by the microcomputer host 2001.

[0041] The solid-state relay 2012 is connected in series to the input signal line 2009 and output signal line 2010 of the output control module 2003, input control module 2002, and double-wire detection terminal 2007. During the wiring status detection, the solid-state relay 2012 closes to complete the connection of the detection circuit, and then disconnects after the test is correct. When the electrical equipment is powered on, since the operating voltage of the electrical equipment is relatively high, the solid-state relay 2012 can effectively isolate the wiring status detection system from the electrical equipment after disconnection, preventing the wiring status detection system from being damaged due to excessive voltage.

[0042] The alarm lamp 2015 and buzzer 2011 are connected to the microcomputer host 2001 and flash intermittently when the wiring is incorrect, reminding the equipment installation and debugging personnel to avoid powering on the equipment when the wiring is incorrect, which may pose a safety hazard to the equipment and the staff.

[0043] This training equipment basically meets the requirements of general teaching training. When a specific skill is required for teaching or social employment, training projects can be designed in combination with the functions of the training equipment to complete the training exercises.

[0044] Before the training equipment leaves the factory, a double-wire detection terminal 2007 is fixedly connected to all the wiring terminals of all the components in the electrical installation execution area 1001, embedded computer programming area, and detection area 2000. The wiring terminals and the connected double-wire detection terminals 2007 are uniformly numbered, and the output ports of the output control module 2003 and the input ports of the input control module 2002 corresponding to the double-wire detection terminal 2007 are marked with this number. The corresponding information of the output ports of the output control module 2003, the input ports of the input control module 2002, and the electrical equipment wiring terminals of each numbered double-wire detection terminal 2007 is input and uploaded to the microcomputer host 2001 through the keyboard 2004. During the input process, the input information is real-time displayed on the display screen 2005 to prevent incorrect information.

[0045] Example 2, please refer to Figures 1-3 Four corners of the bottom of the tabletop are fixedly connected with columns 5000, and the bottom of the columns 5000 is movably connected with universal wheels 6000 through rotating shafts. The number of drawers 4000 is two, and electrician tools and training test wires are respectively placed in the inner cavities of the drawers 4000. A power interface 7000 and a gas source interface 8000 are respectively fixedly connected to the left side of the surface of the bottom box 3000, and a gas source triple unit is fixedly connected to the left side of the bottom box 3000. The training table uses 220V, 50HZ alternating current, and its 220V power distribution circuit is arranged in the back closed cabinet.

[0046] Example 3, please refer toFigures 1-3 A terminal block 9000 is installed on the upper side of the electrical installation execution area 1000 on the top of the table. The wiring terminals of all components in the electrical installation execution area 1000 are routed through the inner cavity of the training table through wires and connected to the lower terminals of the terminal block 9000. The upper terminals of the terminal block 9000 are connected to the cold-pressed terminals 2008 of the double-wire detection terminals 2007. The wires for detecting the wiring status are separated from the wires for wiring exercises during the training process to prevent students from accidentally removing the wires for detecting the wiring status of the training equipment when removing the wires after the training.

[0047] When using the training device, the teacher uploads the correct wiring relationship and number correspondence of the experimental task to the microcomputer host 2001 through the keyboard 2004, and the students connect according to the wiring diagram of the training task. After the wiring personnel complete the wiring, the wiring status detection is started. First, the solid-state relay 2012 is closed. After the output control module 2003 receives the instruction of the microcomputer host 2001, the output port numbered 1 of the output control module 2003 outputs a high level, and the other output ports output a low level. The input control module 2002 detects all input ports except the input port numbered 1. If there is a high level in other input ports, it proves that the electrical equipment terminal corresponding to the input port numbered 1 is connected by a wire to the electrical equipment terminal corresponding to the high-level output port number. All ports of the output control module 2003 and the input control module 2002 are traversed through the above process in turn, and the real wiring status in the current state can be obtained. The microcomputer host 2001 compares the actual wiring relationship with the entered correct wiring relationship to complete the judgment of the wiring relationship. If the wiring is correct, the display screen 2005 will display that the wiring is successful, the solid-state relay 2012 will be disconnected, the training equipment will be powered on and work normally, and the training phenomenon will be observed. If the wiring is incorrect, the alarm light 2015 will be driven, the buzzer 2011 will send out an audible and visual alarm signal, and the terminal number of the incorrect wiring will be displayed on the display screen 2005.

[0048] This training equipment can complete the collection of the wiring status of the training equipment and can compare it with the correct wiring relationship pre-input into the system, so as to complete the inspection of all wiring status of electrical equipment. If there is a wiring error, the system will activate the alarm function to prompt the operator to prevent the electrical equipment from being powered on due to incorrect wiring, causing equipment damage and personnel safety, thereby reducing economic losses and social impacts.

[0049] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PLC anti-misconnection training device for teaching, comprising a training table, an electrical installation execution area (1000) and an embedded computer programming and detection area (2000). The training table includes the top and bottom of the tabletop. On the left side of the top of the tabletop, an electrical installation execution area (1000) is fixedly installed. On the right side of the top of the tabletop, an embedded computer programming and detection area (2000) is fixedly installed. At the bottom of the tabletop, a bottom box (3000) is provided. On the left side of the bottom of the tabletop, a drawer (4000) is provided. The electrical installation execution area (1000) includes a PID training unit (1001), a solenoid valve (1002), a V power distribution terminal block (1003), an encoder (1004), a stepper driver (1005), a stepper motor (1006), an asynchronous motor (1007), a DC motor (1008), a vacuum generator, a circuit breaker, a ground wire terminal, a fuse, a training material trough, a banana socket, an indicator light, a button, a photoelectric switch, a fiber optic sensor, a step pneumatic manipulator, a proximity switch, a synchronous belt, a linear guide slider and a synchronous belt pulley, characterized in that: The embedded computer programming and detection area (2000) includes a microcomputer host (2001), an input control module (2002), an output control module (2003), a keyboard (2004), a display screen (2005), a computer mouse (2006), a two-wire detection terminal (2007), a buzzer (2011), a solid-state relay (2012), a PLC (2013), an inverter (2014), and an alarm lamp (2015). The two-wire detection terminal (2007) includes a cold-pressed terminal (2008), an input signal wire (2009), and an output signal wire (2010). The input signal wire (2009) and the output signal wire (2010) are fixedly connected and conductively connected to the cold-pressed terminal (2008). Each component terminal of the electrical installation execution area (1000) is connected to the input control module (2002) and the output control module (2003) through the two-wire detection terminal (2007). A terminal block (9000) is installed on the upper side of the electrical installation execution area (1000) at the top of the table. The wiring terminals of all components in the electrical installation execution area (1000) are routed through the inner cavity of the training table through wires and connected to the lower terminals of the terminal block (9000). The upper terminals of the terminal block (9000) are connected to the cold-pressed terminals (2008) of the two-wire detection terminal (2007). Each output port of the output control module (2003) is connected to the input signal wire (2009) of the two-wire detection terminal (2007) through a signal wire and a solid-state relay (2012). Each input port of the input control module (2002) is connected to the output signal wire (2010) of the two-wire detection terminal (2007) through a signal wire and a solid-state relay (2012). The solid-state relay (2012) is connected in series between the output control module (2003), the input control module (2002), and the input signal wire (2009) and the output signal wire (2010) of the two-wire detection terminal. All wiring terminals of all components are fixedly connected with a two-wire detection terminal (2007), and the wiring terminals and the connected two-wire detection terminals (2007) are uniformly numbered.

2. The PLC anti-misconnection training device for teaching according to claim 1, wherein: Four corners of the bottom of the table are fixedly connected with columns (5000). The bottom of the columns (5000) is movably connected with universal wheels (6000) through a rotating shaft. The number of drawers (4000) is two. Electrical tools and training test wires are respectively placed in the inner cavities of the drawers (4000). A power supply interface (7000) and an air source interface (8000) are respectively fixedly connected to the left side of the surface of the bottom box (3000). An air source triple unit is fixedly connected to the left side of the bottom box (3000). The training table uses 220V, 50HZ alternating current, and its 220V power distribution circuit is arranged in the back closed cabinet.

3. The PLC anti-misconnection training equipment for teaching according to claim 1, characterized in that: The output control module (2003) and the input control module (2002) are multi-pin STM32 chip circuit boards.

4. The PLC anti-misconnection training equipment for teaching according to claim 3, characterized in that: The chip model in the multi-pin STM32 chip circuit board is STM32F103ZCT6.

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