2/26/2021 3:29 PM | |
Joined: 1/6/2020 Last visit: 9/5/2024 Posts: 7 Rating: (0) |
Hi We are running a redundant S7-1500RH PLC system with a MRP (media redunfancy protocol) ring consisting of several Scalance XC206 managed switches. During operation we want to disable one ethernet port on one of these switches using a instruction from the master PLC. One possibility I found was to use SNMP to control the switch. After a bit of trail and error I found the correct OID to disable the wanted port using the LSnmp library. However, It does not work when the switch is in "data exchange" and an "Application Relation (AR)" has been established between the PLC and switch. I get the following error trying to disable ports on the switch (when using the Web based interface):
Explained in detail here: As suggested one can run the instruction: "D_ACT_DP" to disable the profinet device (Scalance switch). This however poses two problems: 1) The instruction does not work with S7-1500RH redundant plc's 2) The switch will disabled and break the MRP ring during operation leading to loss of redundancy. Any suggestions on how to solve the problem? Is there an alternative instruction to disabling the port during operation? Best regards Thomas |
Last edited by: Jen_Moderator at: 03/01/2021 08:53:16Optimized link. |
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