7/14/2013 7:21 AM | |
Posts: 144 Rating: (7) |
Hi, I´ve a CPU315-2DP with a CP341 for modbus communication. Everything was working perfect, all of suddden the modbus communication stopped working . i disconnected the the CP341 power and connected again.but this time the CP341 was flashing on the SF-led (red), the TXD andRXD was ligthing green and CPU went to stop and didnt come back. only when i disconnect the CP from rack CPU could run. by analyzing the diagnostics of the cp i figured that cp might be defective and i replaced it and everything went ok. as discussed here: /tf/WW/en/Posts/15322 the question is: when RX and TX remain ON and SF is flashing ,what does that exactly means? i didnt find a hint for this in siemens manual for cp341! does it mean exactly that the cp is defective?? |
Last edited by: r.ethernet at: 7/14/2013 7:22 AM |
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7/14/2013 7:32 AM | |
Joined: 1/28/2009 Last visit: 6/11/2024 Posts: 6841 Rating: (1359)
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That means the module is not usable anymore.You should clear that , what is the normal procedure to remove such as CP while CPU is run.That may happens when CP needs the CPU to be in STOP mode for such a change.I suggest reading again the manual for this issue and clear it with here ( Support Request).
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Last edited by: hdhosseini at: 7/14/2013 7:33 AM |
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This contribution was helpful to1 thankful Users |
7/14/2013 2:52 PM | |
Joined: 1/28/2009 Last visit: 6/11/2024 Posts: 6841 Rating: (1359)
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Hello again Sa'adi Lover; Normal procedure comes from here,This is the problem friends had 2 years ago: Problem on CP341 "6ES7 341-1AH01-0AE0"Just read the manual before doing every thing related to SIMATIC modules.Best regards Hamid Hosseini P.S. And this gift from me in Persian to all Sa'adi Lovers: بنى آدم اعضای یک پیکرند
که در آفرینش ز یک گوهرند چو عضوى به درد آورد روزگار دگر عضوها را نماند قرار تو کز محنت دیگران بی غمی نشاید که نامت نهند آدمی |
Last edited by: hdhosseini at: 7/15/2013 12:32 PMLast edited by: hdhosseini at: 7/14/2013 3:03 PM |
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10/14/2014 10:27 AM | |
Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4770 Rating: (123) |
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