Delta AS Series Programming Manual page 976

Method 1: Using MODRW instruction
The data in D20-D27 of the DVP-ES2 are read when SM96 is ON and X0.0 is ON.
The following table explains the MODRW operands.
Operand
S
1
S
2
S
3
S
n
The communication response between the AS Series CPU and the DVP-ES2 depends on the mode.
ASCII mode: You do not need to convert the ASCII codes, and they are expressed in 16# values.

AS sends the communication command: "01 03 10 20 00 08 C4 CR LF"

AS receives the communication command: "01 03 10 12 34 56 78 11 22 33 44 55 66 77 88 99 AA BB CC AA
Description
Unit address
Function code
Reading the device address of D20
First register for storing the data read
Reading the data length
CR LF"
Cha p ter 6 App l ied Ins truc tio ns
Device
16#0001
16#0003
16#1020
D10
8
6_
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