I'm working at a project in which I need to read some data from ~70 SEPAMs with a CitectSCADA application. My question is, can I make the connection between the computer with the CitectSCADA application, the EGX400 gateway and the ~70 SEPAMs?

Thanks a lot!!!

 

Of course you can, provided that Citect has a Modbus interface so that you can read data from your sepam or you will need an OPC server that will work as bridge. The OPC server will read from sepam and Citect will read from the OPC server.

 

Since you're using an EGX, you'll need a data server which does ModbusTCP by the way. Your references will pretty much consist of the IP address for the EGX, the Modbus address you've assigned to the SEPAM, and the register value you're looking to read.

Some basic things to look out for that you're probably already aware of will be unique Modbus addresses for your SEPAMs if you're only using one EGX, and you'll need to configure the EGX to tell it which Modbus addresses are connected to which of the two ports.

The only thing that may stand in your way is that if I recall correctly, the EGX400 has a maximum device count of 64 (32 per port) instead of the 96 (48 per port) that the old EGX200 would handle. If you have 70 devices, you may fall short on the EGX side but I could be wrong on that.

 

Of course you can do like that. You just need Citect, EGX, and Sepam. No need for OPC server or whatever like that.

It is so simple. You just have to config for EXG, Sepam, and Citect.