as above, have you used consistent modules in your DP/DP coupler?
Either use SFC14/SFC15 or the i/o addresses should be within the process image of the CPU (usually below byte 256).
You MUST transfer the data for a consistent i/o block in one whole consistent block.
You should program a DB with 2 separate 64-byte STRUCTs.
Then call 2x SFC15 each with one of the STRUCTs.
I dont understand. What are we looking at in the screenshot ?
Where are the Q1900 bits ? In the PLC that is sending data or in the PLC that is receiving data ?
What is the relation to the data in DB76 ?
You have a lot of STRINGs in DB76. But are somehow connected to the BOOLs in Q1900.
Come on, how is someone supposed to understand what is going on based on this input ?!
Not sure but it seems that the view of DB76 is not online. The "actual values" you can see in the screenshot are the offline actual values, not the online actual values.
What is the status of the corresponding receiving data area in the receiving CPU ?
Still would like to know what are the online actual values in DB76.
Yes you can use the maximum size 64 words.