FX5U RS485 and Delta DOP-B03S211

[Oggy 0]

Hi All

First ever post so forgive me if I do anything wrong.

My customer has given me an FX5Uc PLC and a Delta DOP-B03S211 HMI.

Comms need to be via serial. Ethernet not an option.

I have configured the HMI as the Delta DOP datasheet(see attached)

I have configured the PLC as: -

MC-Protocol - 19200,8,1,Odd

I however get an HMI error: -

##########################################

COM 1 STATION 0: COMMUNICATION ERROR 3.

READ ERROR

No Response from Controller

#########################################

I have created a simple page on the HMI  consisting of a push button (M reg) and a numeric display (D reg).

When pressing the push button I can see the change in the PLC. (Transmission good)

Any change of the D reg in the PLC is not reflected on the HMI. Confirms the message.

I have tried all combinations of settings on both side but no joy.

The PLC seems to be happy as it receives and transmits ok with no errors.

Can any one see what I am doing wrong?

DELTA_IA-HMI_Mitsubishi FX5U_CM_ENG_20170728.pdf

[NevergoldMel 38]

First you let the customer spec serial communications. 
But it's probably something stupid like the Numeric Input widget will not show data read from comms.