Hi folks,
Currently I have on my desk a small Twido PLC part no. TWDLCDA16DRF (9 inputs, 7 outputs)
Also I have a Proface AGP3600GT colour touch HMI
I have made a cable for comms between the 2, using RS-485
The program in the twido is a simple start/stop.
M100 or M0 and not M101 out M0
M0 out Q0.0 (just to light an output)
The Proface has 2 'buttons' start and stop, mapped to M100 and M101 the 'lamp' option is enabled and is mapped to M0 so the green button start lights up and the red stop button lights when stopped.
All works fine.
However, I also have a new Twido TWDLCAE40DRF (24 in 16 out) which despite identical system settings etc, and the same ladder refuses to work fully, I get a proface error 'out of range'
If I remove the 'lamp' options from the pair of buttons it works fine.
Anyone any clues?
It appears the HMI will 'send' data (the buttons work) but can't 'read' from the PLC (the lamps don't work)
Proface say it's a Twido problem, and Schneider say it's a Proface problem...
RevJim
I have tried using the supposed correct comms cable using plain old RS232, exactly the same problems.
Currently I have on my desk a small Twido PLC part no. TWDLCDA16DRF (9 inputs, 7 outputs)
Also I have a Proface AGP3600GT colour touch HMI
I have made a cable for comms between the 2, using RS-485
The program in the twido is a simple start/stop.
M100 or M0 and not M101 out M0
M0 out Q0.0 (just to light an output)
The Proface has 2 'buttons' start and stop, mapped to M100 and M101 the 'lamp' option is enabled and is mapped to M0 so the green button start lights up and the red stop button lights when stopped.
All works fine.
However, I also have a new Twido TWDLCAE40DRF (24 in 16 out) which despite identical system settings etc, and the same ladder refuses to work fully, I get a proface error 'out of range'
If I remove the 'lamp' options from the pair of buttons it works fine.
Anyone any clues?
It appears the HMI will 'send' data (the buttons work) but can't 'read' from the PLC (the lamps don't work)
Proface say it's a Twido problem, and Schneider say it's a Proface problem...
RevJim
I have tried using the supposed correct comms cable using plain old RS232, exactly the same problems.