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CP Communication module in "SF"

Created by: Msamy at: 12/27/2008 7:57 PM (5 Replies)

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12/27/2008 7:57 PM	Rate (0)
Msamy Posts: 10 Rating: (0)	HI we are using Siemens S7 400F Redundant PLC.Due to Power Fail,communication Module CP 341(Model 6ES7 341-1CH01-0AE0) gone to "SF" State.Our CCC Controllers connected through this Communication module through Modbus. We have two Modbus Connection 1.One from Bently Nevada 3500 2.Next from CCC Controller's. Bently Nevada 3500 is communicating with PLC. But,CCC Controllers is not communicating with PLC. one rack,we are having ET200M (6ES7153-2BB00-OXBO) and CP 341. ET200M Interface module also showing "SF". please tell me how to clear the fault in ET200M and CP 341 One more thing what is "SF" and "BF"?. Regards Msamy
Msamy Posts: 10 Rating: (0)
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12/27/2008 9:24 PM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 1/21/2019 Posts: 604 Rating: (56)	Hello, SF = System Fault BF = Bus Fault To give an idea what happened because of the power failure I can only advice you to go online with a PC and Step 7. Or when you have a very new CPU (ProfiNet) with Ethernet Interface you could have the website with diagnostic information available. But without the diagnostics it's hard to tell what is wrong.
	Best regards, INS
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12/28/2008 6:38 PM	Rate (0)
Msamy Posts: 10 Rating: (0)	Hi Thanks for your information. While changing new "CP341" communication module, Is it neccessary to bring both CPU in STOP Mode?. Because we changed new"CP341" Communication module.While Change communication module we put both CPU in "Stop" mode.After replace a module.Wechanged "Stop" Mode to "RUN"mode both CPU at same time.Eventhough communication module is not communicating. Is there any procedure to change module?. Is there any startup procedure for CPU after replace a module?. One more thing,where can i read logic in Siemens S7 400F?. what is necessary of "Step 7 Microwin32"?. Best Regards Msamy
Msamy Posts: 10 Rating: (0)
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12/28/2008 8:42 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 2/16/2023 Posts: 2705 Rating: (311)	Msamy 1. While changing new "CP341" communication module, Is it neccessary to bring both CPU in STOP Mode?. 2. Because we changed new "CP341" Communication module.While Change communication module we put both CPU in "Stop" mode.After replace a module.Wechanged "Stop" Mode to "RUN"mode both CPU at same time.Eventhough communication module is not communicating. Is there any procedure to change module?. 3. Is there any startup procedure for CPU after replace a module?. One more thing,where can i read logic in Siemens S7 400F?. what is necessary of "Step 7 Microwin32"?. Msamy Hi Msamy, I think you are working with a 41xFH-system.. The numbered questions above are to answer as following: 1. In a H-System it is not at all necessary to STOP the CPU's if you use active backplains; 2. When you use MODBUS RTU then it is necessarry to load the driver on the CP341, see the link: How do you load a loadable driver (such as CP PtP Modbus Master) into a CP 341 which is connected to an H-system by means of ET 200M?Please look also to the newest drivers and the newest Functionblocks ! Note: This procedure is only necessary for loading the loadable drivers, not for assigning parameters. The loadable driver only has to be loaded into the CP 341 once. With the hardware dongle plugged in, the CP can then be operated with the MODBUS master/slave protocol. You can find further information about these drivers in the manuals on the "MODBUS Slave" (Entry ID: 1218007) and "MODBUS Master" (Entry ID: 1220184). The loadable drivers "CP PtP MODBUS Slave V3.1.3" and "CP PtP MODBUS Master V3.1.2" are available to download on the Internet under Entry IDs: 8715908 and 8713784 respectively. 3. If it is on an active backplain then is there nothing necessary to start the CP341 if everything is loaded well. TIP: If you have a 300-Serie CPU then it is easier to load the driver for MODBUS RTU on this system. Look also if you have the PTP program where all the necessary items are to load the MODBUS-driver. For programming the S7-41xFH you need the following program if you have only a H-System STEP7 V5.4 SP4, if you have also F-System then you need also CFC, SCL and F-Systems. PLEASE be carefull all the mentioned things are fore S7 and might also work with PCS7 but I don't know that...
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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12/31/2008 7:58 PM	Rate (0)
Msamy Posts: 10 Rating: (0)	Hi Actually today,we taken backup from PLC(upload to PG). After We removed Memory Card from both PLC and we made switch off both PLC. Now,There is no program in the both PLC. later We download Program in Master PLC.Communication module became Normal. After 15 minutes,it was sychronized with Redundant PLC.It came to RUN mode(Redundant PLC) we did not download program in Redundant PLC. After 20minutes,Redundant PLC became "STOP" Is it necessary to download Program in Redundant PLC also. At present Master PLC is running,there is no problem in communication. But the problem on Redundant PLC ONLY.because it is in STOP Mode. Please tell me to clear the problem
Msamy Posts: 10 Rating: (0)
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1/2/2009 12:38 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 2/16/2023 Posts: 2705 Rating: (311)	Hi Msamy, Which messages are coming into the diagnostic buffer of the CPU (BOTH !)... If the software was ok before, it must be ok now also ! If one CPU is going after 20 minutes, there must be some explanation in the diagnostic buffers... . So please place both Diagnostic buffers (with save as please) on the forum.
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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