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  • 1.  Modbus

    Posted 09-03-2018 04:41
    Hi,

    Has anyone made Dashboard talk the Modbus TCP protocol?

    I have an Advantech Adam 6060 Relay/IO device I'm hoping to use to control a motorised screen contact closure (Up/Down) from a dashboard custom panel.

    I'm still working it out with putty to send raw TCP on port 502 but not seeing it work yet.. Once I get my syntax correct, hopefully it's not too difficult to get a button to send a command. But thought I'd ask here first in case someone else has already got it working!
    Haven't got the syntax worked out, in theory I think i want to send these as Hex, TCP, Port 502

    00 00 00 00 00 06 01 05 00 17 FF 00 (Address 17 ON)

    00 00 00 00 00 06 01 05 00 17 00 00 (Address 17 OFF)



    Thanks
    Simon




  • 2.  RE: Modbus

    Posted 09-04-2018 20:34
    I haven't tried this exact device but the message should be:

    rosstalk.sendAsBytes('IP_OF_DEVICE', 502, '00 00 00 00 00 06 01 05 00 17 FF 00');

    or, if it expecting the hex values as ASCII characters,

    rosstalk.sendMessage('IP_OF_DEVICE', 502, '00 00 00 00 00 06 01 05 00 17 FF 00');

    #DashBoard