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Input circuit in high speed counter module in PLC

A technology of high-speed counters and input circuits, which is applied to the counters of additional devices, counting mechanisms/items, and program control in sequence/logic controllers. Effect of Interrupt Processing Speed

Inactive Publication Date: 2015-05-06
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As mentioned above, in the case where the interrupt period is equal to or less than the interrupt program processing time, the MPU 200 has a disadvantage in performing only high-speed counting, or performing erroneous operations due to ignoring input pulses

Method used

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  • Input circuit in high speed counter module in PLC
  • Input circuit in high speed counter module in PLC
  • Input circuit in high speed counter module in PLC

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Embodiment Construction

[0056] When describing the present disclosure, detailed descriptions of known structures and processes in the art may be omitted to avoid obscuring the understanding of the present invention by those skilled in the art due to unnecessary details about these known structures and functions. Therefore, the meaning of the special terms and vocabulary used in the specification and claims should not be limited to the literal or general meaning, but should be interpreted or different according to the user or operator's intention and customary usage. Therefore, the definition of special terms and vocabulary should be based on the content of the entire specification.

[0057] The suffixes "module", "unit", "device" and "part" may be used for elements to facilitate the present disclosure. The suffix itself may not be given an important meaning or function. It should be understood that "module", "unit", and "component" can be used together or interchangeably. That is to say, the terms “er”...

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Abstract

An input circuit in high speed counter module for PLC is provided, the input circuit being configured such that various types of pulse signals are changed to a single type of pulse signal and transmitted to an MPU, whereby the type of input pulse is checked or an operation of checking addition / deduction is omitted to increase an interrupt process speed.

Description

Technical field [0001] The present disclosure relates to an input circuit, and more particularly, to an input circuit configured to be used in a high-speed counter module, which is one of the expansion modules of a programmable logic controller (PLC). Background technique [0002] The information disclosed in this background section is only used to enhance the understanding of the general background of the present disclosure, and should not be regarded as an acknowledgement or any form of suggestion that this information constitutes known to those skilled in the art Existing technology. [0003] Generally, the high-speed counter module of a programmable logic controller (PLC) is used to count the fast pulse signals of a pulse generator or an encoder, and is used to implement the PLC expansion module necessary to understand the operation of motor rotation in industrial sites To define. [0004] The high-speed counter module uses high-speed pulses to improve the accuracy of the pulse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/0423G05B19/04G05B19/042G05B19/05G06M3/00H03K21/02H03K21/026
Inventor 金锡渊
Owner LSIS CO LTD