Delta Electronics DVPCOPM-SL Manuel D’Utilisation

DVP-PLC Application Manual 

25

MOV

H0101

D6250

M0

MOV

H0004

D6251

MOV

H0102

D6252

MOV

H2021

D6253

MOV

H0004

D6254

END

ReqID = 01, Command = 01

Size = 04

Type = 01, MAC ID = 02

Index = 2021

Sub index = 04

 

z Program 

explanation 

1. 

The program first reset the SDO request message editing area and SDO response message 

editing area to 0. 

2. 

When M0 = On, CANopen master will send out SDO request message and read the contents in 

index 2021, sub index 4 of the target equipment (at node address 02). If the communication is 

successful, the slave will return with the response message. 

3. 

When M0 = On, CANopen master will send out request message only once. If you would like it to 

send out messages again, you will have to change the ReqID. 

4. 

The messages returned from the target equipment are stored in D6000 ~ D6005. 

„ Example 

II 

z Target: 

When M0 = On, set the content in index 2047, sub index 2 (i.e. the control word of the target 

temperature) in IFD9503 to 0104Hex (i.e. 26.0°C). Please note that you have to write 0401Hex into 

D6255 of the PLC. 

Master

CANopen

 

DTA 

RS-485

IFD9503

CAN+

CAN-

SHLD

GND

Node 1

Node 2

DTA4848

AT

SET

P V

S V

OUT

ALM1

ALM2

°C

°

F