Connecting to Scada OPC server

[Paul J]

Hi

I am trying to connect to a scada network on a V570 using Modbus IP.

No success so far.

I have attached a screen cap of my ethernet startup (couldnt get it to paste direct).

Could someone please have a look and see what I have done wrong.

 

Thanks

Paul J

 

 

 

 

V570 Modbus.pptx

[AlexUT]

Hi Paul J,

Use next example for MODBUS TCP Slave:

C:\Program Files (x86)\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Communications\Ethernet\Ethernet MODBUS IP\V280_Ethernet_TCP_MODBUS_IP_Slave.vlp

This example include all required functions.

 

[Paul J]

Thanks For reply, this is the example I used.The only difference is I am using a different

IP address and gateway address. Modbus scan bit is showing true.

Do you think this may be Scada related problem.

Regards

[AlexUT]

Hi Paul J,

Tell me your PLC IP address (send it to support@unitronics.com) and I will check connection by Modbus application.

 

[AlexUT]

Hi Paul J,

IP address you use is from private address space.

It is not accessible direct from the Internet.

It can be accessible only from the same network.

If this IP address after router, you have to make port forwarding at router to access this PLC from Internet.

B.R.

 

[Paul J]

Thanks for reply

You are correct this is to connect to a closed network for Scada 

application. It is to connect to OPC server.