zenPG AccessIEC870Sl in 870-104 redundancy mode immediately closes one connection when redundant master opens second connection

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• IEC60870-5-104 drivers (master and slave) are loosing redundant connection because of errors in START/STOP procedure implementations

  Summary When triggering a manual redundancy switch the IEC60870-5-104 master acknowledges outstanding dl-frames after sending STOPDT. This may cause the slave to ignore the ack or even close the master connection. Description When triggering a manual ...

• IEC870 Master Redundancy according to Ed. 2.0 - send only TestFR Act/Con between Master and Slave

  Summary Master doesn't recognize connection loss, if both redundant connections fail simultaneously. Thus no general interrogation is requested and further no spontaneous value changes are transmitted. Description Master doesn't recognize connection ...

• Modbus process gateway closes immediately after startup under specific circumstances

  Summary The modbus process gateway closes immediately after startup with an unhandled exception when the runtime is running multiple projects and there is at least one project for which no variable is configured in modbus slave of the process ...

• In redundancy mode the servers do not reconnect correctly after connection lost

  Summary System driver data point "Active standby" rest sometimes empty after reconnect. The defect appears only when the formally standby after the reconnect continue to be the active server. In that situation cut happens that the formally server, ...