Ring fiber communication troubleshooting (IP issues)

I. Project Background

There is 612 inverter in this site, a totally 25 blocks with 25 STS, 25 SACU 2000D. Use third-party scada. our SACU will connect with the control room by the third-party switch which is configured by scada vendor.

II. Problem description

After connect all SACU to the control room and show up all information in scada interface, most of signal is ok. But when we on-grid and send the command to SACU, the connection become fail, after restart it will be connected and disconect after few minutes. The communication is not stable.

III. Fault locating and analysis:

1. Check whether of connection fiber cable.
   

   Check whether configure of switch is used.

   Check IP address is set in smartlogger, the IP map as below:
   
   

   Sr. No.	Description	IP Address	Description	IP Address	SMART   TRANSFORMER
   1	Smart Logger-1	192.168.8.150	SCADA SERVER-1	192.168.8.201	SMART TRANS-1
   2	Smart Logger-2	192.168.8.151			SMART TRANS-2
   3	Smart Logger-3	192.168.8.152			SMART TRANS-3
   4	Smart Logger-4	192.168.8.153			SMART TRANS-4
   5	Smart Logger-5	192.168.8.154			SMART TRANS-5
   6	Smart Logger-6	192.168.8.155			SMART TRANS-6
   7	Smart Logger-7	192.168.8.156			SMART TRANS-7
   8	Smart Logger-8	192.168.8.157			SMART TRANS-8
   9	Smart Logger-9	192.168.8.158			SMART TRANS-9
   10	Smart Logger-10	192.168.8.159	SCADA SERVER-2	192.168.8.202	SMART TRANS-10
   11	Smart Logger-11	192.168.8.160			SMART TRANS-11
   12	Smart Logger-12	192.168.8.161			SMART TRANS-12
   13	Smart Logger-13	192.168.8.162			SMART TRANS-13
   14	Smart Logger-14	192.168.8.163			SMART TRANS-14
   15	Smart Logger-15	192.168.8.164			SMART TRANS-15
   16	Smart Logger-16	192.168.8.165			SMART TRANS-16
   17	Smart Logger-17	192.168.8.166			SMART TRANS-17
   18	Smart Logger-18	192.168.8.167	SCADA SERVER-3	192.168.8.203	SMART TRANS-18
   19	Smart Logger-19	192.168.8.168			SMART TRANS-19
   20	Smart Logger-20	192.168.8.169			SMART TRANS-20
   21	Smart Logger-21	192.168.8.170			SMART TRANS-21
   22	Smart Logger-22	192.168.8.171			SMART TRANS-22
   23	Smart Logger-23	192.168.8.172			SMART TRANS-23
   24	Smart Logger-24	192.168.8.173			SMART TRANS-24
   25	Smart Logger-25	192.168.8.174			SMART TRANS-25

   And found IP of smartlogger same layout with Lan port in smartlogger (default 192.168.8.10). So it will cause the connection will be lose with Lan and Wan port.
   
   
   

   

   
   

   Solution: 

Upgrade firmware of smartlogger to V300RC001SPC040 and then change IP of LAN port. (just version later than SPC040 can change mode or IP of LAN port).