Delta AS Series Programming Manual page 977

AS Ser ies Pro gra mm in g M anu al
RTU mode

AS sends the communication command: " 01 03 10 20 00 08 41 06"

AS receives the communication command: "01 03 10 12 34 56 78 11 22 33 44 55 66 77 88 99 AA BB CC 90
SM100 is ON if there is no error in the data.
After the receiving of the data sent from the DVP-ES2, the PLC confirms the data format sent back from the DVP-
ES2. If there are no errors in the format, SM100 is ON; otherwise, SM102 is ON. SM104 is ON if there is no
response.
Method 2: Using MODRWE instruction
The data in D20-D27 of the DVP-ES2 are read when X0.0 is ON.
_6
The following table explains the MODRWE operands.
Operand
S1
S2
S3
S4
S
n
D
The communication response between the AS series CPU and the DVP-ES2 depends on the mode.
6 - 6 9 8
Description
Communication port number
Unit address
Function code
Reading the device address of D20
First register for storing the data read
Reading the data length
Flag for completion of reading and writing data
FE"
Device
16#0001
16#0001
16#0003
16#1020
D10
8
M0