Modbus Flex Write Error

[fedex03]

Hi there,

I'm working on a project that involves the Modbus Node.

Since I need to write several coil and register into a modbus server, I used the Modbus-Flex-Write node to collect every "write" message.

Unfortunately, I get this error:

TypeError: Cannot read property 'getMachineState' of undefined

Anybody can help me to understand this error?

I see the modbus queue that grow up because something goes wrong.

Thanks for the help!

Best regards,
Federico

[Colin]

Are you sure it is coming from the modbus node?

[fedex03]

@Colin

e it is coming from the modbus node?

Yes it comes from Modbus Write Node

I don't know what does it means, it seems something related to the server status.

From the catch node, I get this output

TypeError: Cannot read property 'getMachineState' of undefined at Object._inputCallback (/opt/node-red/node_modules/node-red-contrib-modbus/modbus/maps/modbus-flex-write.js:52:5) at Object.Node._emitInput (/opt/node-red/node_modules/@node-red/runtime/lib/nodes/Node.js:199:18) at Immediate._onImmediate (/opt/node-red/node_modules/@node-red/runtime/lib/nodes/Node.js:179:33) at processImmediate (internal/timers.js:439:21)

Any ideas?

Thank you

[Colin]

What version of node-red and nodejs are you using. For the latter, use
node -v
If that is V12, 14, or 16 then that should be ok. If you are using a recent version of node red then probably best to post an issue on the node's GitHub page.

[fedex03]

My node-red version in "1.0.3: Maintenance Release"

This is an industrial device an I cannot access to command line to get the nodej version.

This kind of error could be related to the modbus server that does not offer the missing properties?

Thanks

[Colin]

Put an issue on the node's GitHub page, I think only the author can answer this.