Sending Sdo, Nmt And Reading Emergency By Ladder Diagram; Principle; Structure Of Sdo Request Message - Delta CANopen DVPCOPM-SL Operation Manual

CANopen Communication Module DVPCOPM-SL
5

Sending SDO, NMT and Reading Emergency by Ladder Diagram

5.1 Principle

See the chart below for sending SDO by WPL program:
SDO request message from master
A: DVP-SV sends out request message to DVPCOPM-SL (master).
B: DVPCOPM-SL (master) sends out request message to the target equipment.
C: The target equipment processes the request message and sends the response message to DVPCOPM-SL.
D: DVP-SV receives SDO, NMT and Emergency data.

5.2 Structure of SDO Request Message

You can edit SDO, NMT and Emergency in "request message editing area". Take the first DVPCOPM-SL master
placed on the left hand side of DVP-SV for example. See the table below for the corresponding relation between
"request message editing area" and "response message editing area" and the devices in PLC.
PLC device
D6000 ~ D6031 SDO response message and Emergency response message
SDO request message, NMT service message and Emergency
D6250 ~ D6281
request message
28
D
DVPCOPM-SL
B
IFD9503
VFD-B
Editing area
SDO request message
(PLC -> COPM)
SDO response message
(COPM -> PLC)
DVPCOPM DVP28SV
RUN
STOP
DVP28SV
SDO response message from slave
C
A
Editing length
64 bytes
64 bytes
DVP-PLC Operation Manual