Delta DVP-ES2 - Manual (Page 452)

D V P - E S 2 / E X 2 / S S 2 / S A2 / S X 2 / S E O p e r a t i o n M a n u a l - P r o g r a m m i n g
3 - 3 3 6
H87 MOV
M 1002
D1109
SET M 1136
K1 00 M OV D1252
MODRW K2 K1
X0
H0500 D0 K1 6
Connection device
address:
K1
Function code: K2
read multiple bits
Data address: Y0=H0500
Data storing register
Data length ( bit)
SET
X0
M 1316
M1320 = OFF,
ASCII mode
RST M 1320 SET M 1320
Set communication protocol as 9600, 8, E,1
Retain communication setting
Set receiving timeout as 100ms
Sending request
M1320 = ON
RTU mode
RST M1318
Processing received data
Reset M1318
M1318
Receiving completed
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
z ASCII mode (COM3: M1320 = OFF, COM1: M1139 = OFF):
When X0 = ON, MODRW instruction executes the function specified by Function Code 02
PLC1 Ö PLC2, PLC1 sends: “01 02 0500 0010 E8”
PLC2 ÖPLC1, 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
z RTU mode (COM3: M1320 = ON, COM1: M1139 = ON):
When X0 = ON, MODRW instruction executes the function specified by Function Code 02
PLC1 Ö PLC2, PLC1 sends: “01 02 0500 0010 79 0A”
PLC2 Ö PLC1, PLC1 receives: “01 02 02 34 12 2F 75”