Delta DVP-SX2 - Page 495

DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
3-374
ASCII mode (COM3: M1320 = OFF, COM1: M1139 = OFF):
When X0 = ON, MODRW instruction executes the function specified by Function Code 06
PLC  VFD-B, PLC sends: “01 06 2000 1770 52”
VFD-B  PLC, PLC receives: “01 06 2000 1770 52”
(No data processing on received data)
RTU mode (COM3: M1320 = ON, COM1: M1139 = ON)
When X0 = ON, MODRW instruction executes the function specified by Function Code 06
PLC  VFD-B, PLC sends: “01 06 2000 1770 8C 1E”
VFD-B → PLC, PLC receives: “01 06 2000 1770 8C 1E”
(No data processing on received data)
Program Example 9: COM2 (RS-485), Function Code H0F
1. Function code K15 (H0F): write in multiple bit devices. Up to 64bits can be written.
2. PLC1 connects to PLC2: (M1143 = OFF, ASCII Mode), (M1143 = ON, RTU Mode)
3. For ASCII or RTU mode, PLC COM2 stores the data to be sent in D1256~D1295 and the
received data in D1070~D1085.
4. Take the connection between PLC1 (PLC COM2) and PLC2 (PLC COM1) for example, the
tables below explain the status when PLC1 force ON/OFF Y0~Y17 of PLC2.
Set value: K4Y0=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
H87MOV
M1002
D1120
SET M1120
K100
MOV
D1129
RST
M1127
Set communication protocol as 9600, 8, E, 1
Retain communication protocol
Set receiving timeout as 100ms
MODRW K15K1
X0
H0500 D0 K16
Connection device
address: K1
Function code: K15
Write in multiple bit devices
Data address: H0500
Data storing register
Data length(bit)
Processing received data
ASCII mode: The received data is stored in in ASCII format. D1070~D1085
RTU mode: The received data is stored in D1070~ in Hex format.D1085
Reset M1127
M1127
SET
X0
M1122
Sending request
M1143 = OFF
ASCII mode
RST
M1143
M1143 = ON
RTU mode
SET
M1143
Receiving completed