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Modbuscp

1/16/2013 2:08 PM	Rate (0)
Robin Dierick Posts: 24 Rating: (1)	Hello, We tried to implement Modbus/TCP on PCS7 V7.1 SP2. It was all going well, but when we wanted to take the block online, this error appeared: A080 Different instance DBs were used for the call of MODBUSCP in OB100 and the cyclic OB. How is this possible??? JAKKE1
Robin Dierick Posts: 24 Rating: (1)
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1/17/2013 5:20 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Jakke, with CFC it is not possible to have different IDBs, but with STEP7. A080 also occurs, when the Modbus IDB is transferred to the CPU without STOP/RUN. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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1/18/2013 10:34 AM	Rate (0)
Robin Dierick Posts: 24 Rating: (1)	Hi Kaulquappe That´s why I find it so strange. Soif i want to get rid of thisstatus I have to go in stop and back to Run with the CPU? Can the block work without any problem if I don't want to do this? Thx Cheers Jakke
Robin Dierick Posts: 24 Rating: (1)
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1/18/2013 1:11 PM	Rate (0)
Sakura Silver Member Joined: 9/22/2010 Last visit: 2/10/2025 Posts: 225 Rating: (28)	Yes, you need do to a restart in order to initialise the Modbus block. The initialisation in OB100is only done after a warm restart, because that is the only time this OB is called. Regards Sakura

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1/19/2013 11:34 AM	Rate (1)
Robin Dierick Posts: 24 Rating: (1)	Is a configuration in run not possible? If not, I think this is a major disadvantage. Thanks for your help!
Robin Dierick Posts: 24 Rating: (1)
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1/21/2013 2:02 PM	Rate (0)
Sakura Silver Member Joined: 9/22/2010 Last visit: 2/10/2025 Posts: 225 Rating: (28)	When using the MODBUSCP block, you definitely need to restart. A configuration in run is not permitted. Regards Sakura

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1/22/2013 3:35 PM	Rate (0)
Robin Dierick Posts: 24 Rating: (1)	Thank you all!!
Robin Dierick Posts: 24 Rating: (1)
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