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7/27/2020 8:05 AM | |
Joined: 4/11/2018 Last visit: 9/2/2024 Posts: 2 Rating: (0) |
Hello everyone we are working a project as below system Discription: -a PDCS system with s7-417-5H CPU and CP443-1 with over 3000 IO -most of the IOs are sent from Siemens Protection relay to CPU through IEC61850 network.(almost 500 protection relays) -64MB memoryis used and 98% of work memory is filled. -we used 4 sets of redundant Station Gateway (9AE4100-1EC10) to connect protection relays to PLC. (each set of redundant gateway about 120 protection relays) Network: -Protection relays are located in different substations. in each substation, Hirschmann RS20 unmanaged switches inserted to connect to protection relays. at the end all switches are connected together as a ring and a Siemens x-206-1 managed switch manage ring redundancy by MRP protocol. from each CP443-1, one s7 connection is connected to each Station Gateway. software: PCS7 8.1 StatCon V1.25.0.0 to configure Station Gateways all steps are done according to attached Siemens Manual. communication stablished and reading data is ok. trouble: based on Manual Page 31 when you use two s7 connection, one is used for send and another for receive. (> and < sign appear on 61_link Block) the problem is sometimes," * " sign is shown on 61_LINK block status which means one s7 connection is used for both send and receive data at the same time and the connection to Protection Relays are lost. sometimes communication is ok, ping is ok but we loose it without any sensible reason. is there anyone who can find any solution? AttachmentStation_Gateway_-__Installation_and_user_manual_V1.44.pdf (80 Downloads) |
7/27/2020 8:07 AM | |
Joined: 4/11/2018 Last visit: 9/2/2024 Posts: 2 Rating: (0) |
dear all the status of 61_link block status is as attachment |
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