Terminal seat devices

Abstract

This system is provided with a terminal board body 1, which relays a PLC 12 with external output equipment such as a solenoid 31 or a valve 32, which takes in input data from external input equipment such as a proximity sensor SW0-SW2 controlling the external output equipment, and which has a control part 26 that drives the external output equipment by a control signal commanded by the PLC 12 based on the input data; and the control part 26 is provided with a control means 4 which stores the input data from the PLC 12 in a storage medium 10 of a memory cassette 9, and the memory cassette 9 is detachably arranged to the terminal board body 1.

Description

technical field [0001] The present invention relates to a relay connection between a control device such as a PLC and an external output device such as a solenoid, and taking in input data from an external input device such as a non-contact switch that monitors the external output device, and then passing The command of the control machine is used to control the terminal block device of the external output machine. Background technique [0002] In the case of an abnormal shutdown in a production line or the like, it is desirable to shorten the downtime (time during which the production line or the like is stopped) as much as possible. [0003] The actions when an abnormal shutdown occurs in a production line, etc. are as follows: [0004] ①The on-site maintenance person in charge investigates the abnormality and finds out the place where the abnormality is thought to have occurred. [0005] ②Replace or repair the equipment that is considered abnormal. [0006] ③After repl...

AI Technical Summary

Problems solved by technology

[0008] However, as described above, when the production line, etc. has been operating normally after replacing or repairing the equipment that is considered to be abnormal , Many people think that this is all right, but because no countermeasures are taken to deal with the real cause, it becomes a vicious circle like an abnormal downtime after several months

[0009] From the point of view of maintenance, it is difficult to reproduce the state of abnormal shutdown in the actual situation, although it is necessary to capture the precursor of abnormal shutdown, and because the state before the abnormal shutdown is unknown, that is, the sequence information of input and output (time diagram ), so preventive maintenance is not possible, that is, the previous state cannot be analyzed, and no signs can be found, so it is impossible to take countermeasures, etc.

[0010] Although it is conceivable to network the input and output units for data exchange, once the network is constructed, the loss caused by changing the network construction or changing the wiring when the equipment (device) is changed will be great.

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