celichi
Lifetime Supporting Member
Hello fellow techies,
I am using a BSN modules to switch RIO on a redundant SLC500 project (I didn't spec the hardware). The design has one pair of the Ethernet wires going through the 232/485 A and B terminals on the BSN so that the primary PLC would have connectivity to the Ethernet HMIs. For the most part, this works. However, during a failover, I am experiencing communication loss for approximately 7 minutes and 30 seconds. I started to isolate the network, and I am down to the switch, one PLC and the PV Plus. I have disconnected the ME Station, the Secondary PLC and my laptop
Network Configuration
Linksys Switch SRW2008 (10.12.1.1).
PanelView Plus 1000 (10.12.1.13).
Two SLC 500’s 1747-L551 Ethernet. They both have the same IP address, only one is connected to the network at any given time (10.12.1.10).
Dell workstation running RSView ME Station (10.12.1.2).
Programming Laptop is configured as 10.12.1.250
PanelView, Station and PLCs have 10.12.1.1 configured as gateway, and 255.255.255.0 for mask.
Testing
With the PanelView Plus communicating to PLC #1, I can unplug either the PV or the PLC, reconnect, and communication is restored in seconds.
With the PanelView Plus communicating to PLC #1, I can unplug either the PV or the PLC, reconnect to a different port, and communication is restored in seconds.
With the PanelView Plus communicating to PLC #1, I manually unplug PLC #1 and plug in PLC #2 (same IP and program as #1). Communication is dropped and I have 7 minutes and 30 seconds before communication is reestablished.
Everytime I test this, it is around 7 minutes and 30 seconds (+/- 15 seconds).
I have tried different ports, and same ports with the same end result.
I tried forcing PLCs and ports to 100/Full with the same result.I tried using an unmanaged switch/hub with the same result.
If during the PLC swap, I reboot the PanelView (reset switch on the back), communication is restored after the reboot is complete (under 7 minutes).
Best regards,
I am using a BSN modules to switch RIO on a redundant SLC500 project (I didn't spec the hardware). The design has one pair of the Ethernet wires going through the 232/485 A and B terminals on the BSN so that the primary PLC would have connectivity to the Ethernet HMIs. For the most part, this works. However, during a failover, I am experiencing communication loss for approximately 7 minutes and 30 seconds. I started to isolate the network, and I am down to the switch, one PLC and the PV Plus. I have disconnected the ME Station, the Secondary PLC and my laptop
Network Configuration
Linksys Switch SRW2008 (10.12.1.1).
PanelView Plus 1000 (10.12.1.13).
Two SLC 500’s 1747-L551 Ethernet. They both have the same IP address, only one is connected to the network at any given time (10.12.1.10).
Dell workstation running RSView ME Station (10.12.1.2).
Programming Laptop is configured as 10.12.1.250
PanelView, Station and PLCs have 10.12.1.1 configured as gateway, and 255.255.255.0 for mask.
Testing
With the PanelView Plus communicating to PLC #1, I can unplug either the PV or the PLC, reconnect, and communication is restored in seconds.
With the PanelView Plus communicating to PLC #1, I can unplug either the PV or the PLC, reconnect to a different port, and communication is restored in seconds.
With the PanelView Plus communicating to PLC #1, I manually unplug PLC #1 and plug in PLC #2 (same IP and program as #1). Communication is dropped and I have 7 minutes and 30 seconds before communication is reestablished.
Everytime I test this, it is around 7 minutes and 30 seconds (+/- 15 seconds).
I have tried different ports, and same ports with the same end result.
I tried forcing PLCs and ports to 100/Full with the same result.I tried using an unmanaged switch/hub with the same result.
If during the PLC swap, I reboot the PanelView (reset switch on the back), communication is restored after the reboot is complete (under 7 minutes).
Best regards,