Modbus Registries ION 7350

[JonMiles]

Does anybody know the ION registries used to switch the digital output 1 & 2 after configuration in Designer to D01 and D02?

Thanks,

Jon

[Charles_Murison]

Not sure what you mean by "switch", toggle the state of the output, change the label?

Second, heading is asking modbus register, question is asking ION register. There is a difference.

[jimbradley]

Doing Modbus writes to a ION meter is a little tricky.

You can only do writes to a set of External modules.  I believe the map is fixed

You have to link an External Boolean module or an External Pulse Module to the DO Module.

It's documented "somewhere" so have a look at the Modbus doc for ION or check the Knowledge base.

Jim

[JonMiles · Accepted solution]

Now resolved, It was the external pulse tied to the modbus address 42020 for external pulse 20.

Thanks for the help,

Jon