Why does my HMI return wrong object using modbus FC04 on a M580 CPU (OS3.1 and 3.2)?
description du problem
Historicaly, if an HMI wished to read a %MW or %M object, in a Premium CPU, the HMI was adressing a modbus request "FC04" to the CPU. If the number of %IW and %I configured in the CPU was equal to "0", the modbus server of the CPU accessed to %MW and %M area. => The modbus server of the CPU delivered %MW and %M.
If the number of %IW and %I configured in the CPU was not equal to "0", the modbus server of the CPU accessed to %IW and %I area. => The modbus server of the CPU delivered %IW and %I.
To avoid any migration problem from Premium to M580, we have kept the same rule on the PLC range M580.
The problem is that if a client select in CE15.0 a CPU BMEP58xx20 OS 3.0 or 3.1, the minimum value of %IW and %I has been change to a value different of "0". So the HMI received %I objects instead of %M.
by consequence the HMI doesn't get the expected object!
This different behavior will be fixe in the next version of CE15.1.
Historicaly, if an HMI wished to read a %MW or %M object, in a Premium CPU, the HMI was adressing a modbus request "FC04" to the CPU. If the number of %IW and %I configured in the CPU was equal to "0", the modbus server of the CPU accessed to %MW and %M area. => The modbus server of the CPU delivered %MW and %M.
If the number of %IW and %I configured in the CPU was not equal to "0", the modbus server of the CPU accessed to %IW and %I area. => The modbus server of the CPU delivered %IW and %I.
To avoid any migration problem from Premium to M580, we have kept the same rule on the PLC range M580.
The problem is that if a client select in CE15.0 a CPU BMEP58xx20 OS 3.0 or 3.1, the minimum value of %IW and %I has been change to a value different of "0". So the HMI received %I objects instead of %M.
by consequence the HMI doesn't get the expected object!
This different behavior will be fixe in the next version of CE15.1.
게시 대상: 슈나이더 일렉트릭 Korea
도움이 필요하신가요?
제품 선택기
애플리케이션에 적합한 제품과 액세서리를 빠르고 쉽게 찾을 수 있습니다.
견적 받기
영업 관련하여 온라인으로 문의하시면 전문가가 연락드립니다.
구매처
해당 지역의 가장 가까운 슈나이더 일렉트릭 대리점을 쉽게 찾을 수 있습니다.
지원 센터
한 곳에서 모든 요구 사항에 대한 지원 리소스를 찾아보십시오.