Hello everyone,

I have a project using CPU317 2PN/DP  master and 35 slave include S7-1200 and EM227 modules

communicate thru Profibus with 64 byte in/out each slave. CPU317 just support 32 slave DP - maximum 2048 byte process image and Tia Portal V16 up6.

From slave 1 to slave 31 is ok. From slave 32 I'm using DPWR_DAT and DPRD_DAT to read and write data start from PII2048/PIO2048, it work ok but just then I transfer 4 bytes, if I set 64 bytes it will appear RET_VAL: 80B1

My command: #LADDR: W#16#800 (address 2048)

#Record: P#M2110.0 BYTE 64

Thank you everyone!

Topic closed because the question has been posted twice. The active topic can be found here:

Extending or Transfer data from Peripherie Process Image

Kind regards, Moderator_Lan