What Modbus register do I need to talk to a counter in iSMA-B-8I-IP?

Ignition
1

Hello,

I have an iSMA-B-8I-IP with following registers:

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I want to read one of the counters but am struggling with what designator I need to pick for it in the Ignition tag configuration.

ns=1;s=[iSMA_Modbus]HRI23

and

ns=1;s=[iSMA_Modbus]HRUI23

both fail. My connection in the gateway shows status of connected.

Any advice on what I should try is appreciated.

2

Try enabling Zero-based Addressing in the device connection configuration page.

Your device may also be one that requires a unit ID in front of the designator, so you could try ns=1;s=[iSMA_Modbus]1.HRI23 or ns=1;s=[iSMA_Modbus]255.HRI23 (1 and 255 are common device unit ID defaults, see if yours has a different default unit ID).

1 Like
3

Yes, adding a unit ID of 1 to the start of it worked correctly.

ns=1;s=[iSMA_Modbus]1.HRUI23

Thank you!