Delta Electronics DVPCOPM-SL User Manual

DVP-PLC Application Manual 

20 

z Program 

explanations: 

1.  The first 3 rows of the program set up the communication format between DVP-SA and IFD9503, 

which is 115,200bps, 7E1-ASCII; communication port is COM2. 

2.  When M0 = On, send the input status of X20 ~ X28 on DVP-08ST to D256, and send the data in b0 ~ 

b15 of D0 to M10 ~ M25. 

3.  When D0 = 1, M10 will be On, and Y0 on DVP-SA MPU will output. 

5.1 The 

Principle 

See the chart below for sending SDO by WPL program: 

IFD9503

VFD-B

DVP28SV

DVPCOPM-SL

SDO response message

(COPM -> PLC)

SDO request message

(PLC -> COPM)

A

D

C

B

SDO request message from master

SDO response message from slave

 

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 releation 

between “request message editing area” and “response message editing area” and the devices in PLC.