DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
M1002
MOV
H87
D1109
Set communication protocol as 9600,8,E,1
SET
M1136
Retain communication setting
MOV
K100
D1252
Set receiving timeout as 100ms
X0
X0
RST M1320
M1320 = OFF,
SET M1320
ASCII mode
SET
MODRW
M1316
K1
Sending request
K2
H0500 D0 K16
M1320 = ON
RTU mode
Receiving completed
M1318
Processing received data
Data length(bit)
Data st oring register
Data address: Y0=H0500
Function code: K2
read multiple bits
Connection device
address: K1
ASCII mode: The received data is converted to Hex value
and stored in registers starting from D0
RTU mode: The received data is stored in registers starting from D0
RST
M1318
Reset M1318
• ASCII mode (COM3: M1320 = OFF, COM1: M1139 = OFF):
When X0 = ON, MODRW instruction executes the function specified by Function Code 02
PLC1 PLC2, PLC1 sends: “01 02 0500 0010 E8”
PLC2 PLC1, PLC1 receives: “01 02 02 3412 B5”
PLC1 data receiving register D0
Register Data Descriptions
D0
1234H
PLC converts the ASCII data in address 0500H~0515H and
stores the converted data automatically.
Analysis of the read status of PLC2 Y0~Y17: 1234H
Device Status Device Status Device Status Device Status
Y0 OFF Y1 OFF Y2 ON Y3 OFF
Y4 ON Y5 ON Y6 OFF Y7 OFF
Y10 OFF Y11 ON Y12 OFF Y13 OFF
Y14 ON Y15 OFF Y16 OFF Y17 OFF
• RTU mode (COM3: M1320 = ON, COM1: M1139 = ON):
When X0 = ON, MODRW instruction executes the function specified by Function Code 02
PLC1 PLC2, PLC1 sends: “01 02 0500 0010 79 0A”
PLC2 PLC1, PLC1 receives: “01 02 02 34 12 2F 75”
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