I have communication problems between the NRC12 and the EGX100, does anybody had used it together?

[sesa379798]

I have made test with the EGX300 and the NRC12, the egx300 recognize it but when i test it with egx100 it doesn´t recognize the NRC12.

[VictorMarincus]

Hello Angell,

What do you mean by " it doesn´t recognize the NRC12."?

Please note that EGX100 does not have the "Device Discovery" function like the EGX300.

For the EGX100 you just need to set the correct communication parameters to match the ones on the NRC12. And use the correct wiring and Dip switches (on EGX) of course.

From the EGX's web interface -> Diagnostics you have the option to "Read Device Registers" from the NRC12 and / or analyse the Serial Port's "health" by looking into the "Statistics" page.

Victor

[sesa379798]

Does any difference to use the TSXETG100 o EGX100?

My problem is that the TSXETG100 doesn't read the registers from NRC12, I try using the EGX300 and discard the problem with the NRC12, so I think the only problem could be in the TSXETG100.

[dborle]

Hi Angell,

Please can you provide some more information:

- How do you read the registers in the NRC12 (e.g. over diagnostics/read device registers) with the EGX100/ETG100?

- How do you read the registers with the EGX300?

- What do you like to read out of the device and how can you see that it doesn't work (errors, wrong values...)?

Be aware, that NRC12 is a little bit special as you need to use the Modbus function 4 for reading the values (in most other devices you use the function 3) and the parity is even (it can't be changed).

As far that I know, EGX100 and ETG100 are more or less the same except the label and the Powerlogic protocol in EGX100.

Daniel

[QuanGUO]

Are you using EGX300 as a datalog recorder for NRC12? There are no difference within EGX100, ETG100, EGX300 if you are using EGX as a transparent gateway i.e., it can convert any Modbus RTU serial data into Modbus TCP.

As Daniel mentioned, you have to use Modbus function code 04 (Input Register), but not function code 03 (Holding Register). Also in my memory, you need to limit the register number in your per Modbus polling command. The maximum registers# is 20.

It is recommended that you can use Modscan tool to have a test on NRC12....

Regards,

Quan