Reply To: PROFIBUS DPV1 slave – RS response to SAP 46

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#14705 Reply

John Swindall
Moderator

Hi Dhanashree,
I’m using PROFICaptain as my DPV1 Class 2 master. When I do an initiate from the DPV1 C2 master to the slave this is what I see going on.
SAPs CMD Data
master > slave 50>49 Initiate Req Send timeout other info
master < slave 50<49 RM req Use SAP 48 for comm
master > slave 50>48 DPV1 Poll
master < slave 50<48 Initiate Res Features supported by slave
master > slave 50>48 DPV1 Idle Req
master > slave 50>48 DPV1 Poll
master < slave 50<48 DPV1 Idle Res
.
.
As long as the Idle requests and polls and responses all take place within the timeout allowances, this could go on forever until an abort is sent from the master.
I suspect that your slave does not support the DPV1 timeout being sent down by the master.
This is probably too detailed to discuss on this forum. I suggest you contact your local PI Competeence Center or DPC31 support folks directly for the help you need.
have a good day,
John