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MB_Client error

8/2/2024 1:14 PM	Rate (0)
masoudnfd3111 Member Joined: 10/7/2019 Last visit: 4/24/2025 Posts: 3 Rating: (0)	Hello friends I have one S7 1500 plc and 8 S7 1200 plcs Plc 1500 is used as master and plc 1200 as slave I put two numbers of mb_server (read, write) for slaves and two numbers of MB_Client (read, write) for each slave. The connection_id of each block is also unique The request command of each MB_Client is activated with done or error of the previous MB_Client block. Everything is ok and the read and write operations are performed well, but if one of the slaves is disconnected and reconnected, the mb_clinet block corresponding to that slave(disconnected and reconnect) does not give done and keeps giving errors. If I factory reset the master (s7 1500) and program it again, the problem is solved and the read and write operations are performed successfully. How can I solve the problem without factory reset?

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8/5/2024 11:19 AM	Rate (0)
alanTI Member Joined: 7/5/2021 Last visit: 1/15/2026 Posts: 232 Rating: (31)	I have found that if local port and remote port are not fully configured in both the client and server, there is some buggy behavior in disconnecting and reconnecting.

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This contribution was helpful to 1 thankful Users danw

8/6/2024 9:44 AM	Rate (0)
Murof Platinum Member Joined: 8/3/2009 Last visit: 1/15/2026 Posts: 16637 Rating: (1944)	Hello masoudnfd3111 Check also the basic example for information: https://support.industry.siemens.com/cs/de/en/view/102020340 Bye Murof
	If this Information really helps, you could use the Rate function
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