DeviceNet Network Scanner DVPDNET-SL
5 Sending Explicit Message from Ladder Diagram
DVPDNET-SL supports the sending of explicit messages through WPL programs.

5.1 The Principle of Explicit Message Sending

DVPDNET DVP28SV
RUN
STOP
DeviceNet
RJ12
1
4
VFD-B
DNA02
Explicit request message
(PLC DVPDNET-SL)
Explicit response message
(DVPDNET-SL PLC)
Explicit request message
from master
2
Explicit response message
from slave
3
①: DVP-SV MPU sends out explicit request message to DVPDNET-SL according to WPL program.
②: DVPDNET-SL sends out request message to the target equipment.
③: The target equipment processes the request message and responds DVPDNET-SL.
④: DVP-SV MPU stores the response message from DVPDNET-SL to D register. One explicit message
transmission is therefore completed.
DVP-PLC Operation Manual
14