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EM 231 problem

2/14/2006 3:46 PM	Rate (0)
nguyengocduc Posts: 6 Rating: (0)	Hi, I am using PLC 200 with EM 231 and I met problem as following: The red SF led of EM 231 always lit although there is no program in PLC. Is there a way to have diagnosgtic file when it is online I tried to find manual of EM231 but I can not. Anyone can help me Thanks Nguyen Ngoc Duc
nguyengocduc Posts: 6 Rating: (0)
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2/14/2006 8:02 PM	Rate (0)
Denilson Pegaia Diamond Member Joined: 9/23/2005 Last visit: 12/26/2025 Posts: 4434 Rating: (1487)	Hi, it is possible that your problem stay in the dip switch configuration. See the Manual S7-200 System Manual Apendice A(link http://support.automation.siemens.com/WW/view/en/1109582).
	Denilson Pegaia Siemens Industry Sector Technical Support
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2/15/2006 2:33 AM	Rate (0)
neo Posts: 264 Rating: (59)	Hi! I´m not sure, but perhaps you have problems in Hardware installation: is the Power supply connected right? is the the communication cable between CPU and EM plugged in correct? Have a look at the system manual like Pegaia told you! In Step 7 Microwin you have also the option for diagnosis. I don´t know now because I have no cpu for testing now here, but try to view the information in Step 7 Microwin Menü "PLC" / "Information". Best Regards...
neo Posts: 264 Rating: (59)
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