Hello,
I would like to replace PLC5/40 CH0 communication to an existing Microcontrollersystem with Compact Logix 5069 - Serial. In the Compact Logix I am using a MSG instruction ( PLC5 Typed write ),
The Communication works like expected. Compact Logix is receiving Data, but only N100[0] gets updated. The Microcontrollersystem shall send Data to N100, Length 22 Words, Receive Area begins with 0.
I have attached an Excel sheet which shows the Data handling. It was not possible for me to Read Data from Local:1:I1.DF1Modem.RxData also Local:1:I1.DF1Modem.RxDataLength does not get changed. It looks like the receiving Data from Microcontroller are direct send to N100. ( most likely following a MSG Write Instruction from Microcontrollersystem ).
In PLC5 world an Integer File, like N100, was defined as N100:0, N100:1 etc. there is a difference now within CMPLX, an Integer File looks now: N100[0], N100[1], etc. big question: Does it matter?
How can I catch incoming Data to the Serial Modul? PLC5_2_MCS 20240702.docx
