Yaskawa VS-616G5 Profibus-DP Control Card SI-P - Manual (Page 17)

VS-616G5 Option Instruction Manual: Profibus-DP Control Card SI-P Page 17
Flowchart
The flowchart below describes an implementation of the handshaking procedure for
MODBUS messages in the Profibus master controller.
START
Clear HS bit in
handshaking register
Send new
Message ?
Build MODBUS
command and
update bytes 16 - 27
Toggle HS bit in
handshaking register
INDATA HS =
OUTDATA HS
Handle response
from option board
Wait for response
from option board
Power-on
Reinitialization
Yes
Yes
No
No