Modbus ASCII

[FatMax]

I have a device connected through Modbus TCP/IP where one of the registers contains FW-version of client. However, datatype is ASCII. Is it possible to poll this with a profile?

   

[Daniel]

No but you can try reading it via script, use modbus proxy alongside profile.

[admin]

String datatype support has been recently added to profiles. Apart from "datatype": "string" you also need to specify the number of registers to read - "read_count": 6
Null (zero) bytes are automatically removed from the final string value.

[FatMax]

What would be considered newer FW for the SL? I'm on 2.7.0. Edit: Tried to create a profile but the SL responded with invalid field for datatype when it was string.

Tried this:

https://forum.logicmachine.net/showthrea...34#pid7434

But just getting an empty string as the result.

[admin]

2.7.0 is not the latest firmware. Try reading these registers via read test, it's quite possible that the version is all zeros.

[FatMax]

The script actually worked fine, but as always I had to subtract 1 from the modbusregister for it to work. 

Thank you!