Delta DVP-ES2 - Manual (Page 457)

3 . I n s t r u c t i o n S e t
3 - 3 4 1
Register Data Descriptions
D6 low byte 03 H
address H2101 PLC COM2 automatically
store the value in D1297
D7 low byte 0B H
D8 low byte B8 H
Content of
address H2102
0BB8 H
PLC COM2 automatically
stores the value in D1298
D9 low byte 0B H
D10 low byte B8 H
Content of
address H2103
0BB8 H
PLC COM2 automatically
store the value in D1299
D11 low byte 00 H
D12 low byte 00 H
Content of
address H2104
0000 H
PLC COM2 automatically
store the value in D1300
D13 low byte 01 H
D14 low byte 2D H
Content of
address H2105
012D H
PLC COM2 automatically
store the value in D1301
D15 low byte 8E H CRC CHK Low
D16 low byte C5 H CRC CHK High
Program example 4: COM1(RS-232) / COM3(RS-485), Function Code H03
1. Function code K3 (H03): read multiple Word devices, up to 16 words can be read. For COM2
ASCII mode, only 8 words can be read..
2. PLC COM1 / COM3 stores the received data in registers starting from S, and the stored data
can be transformed and moved by using DTM instruction for applications of other purposes.
3. Take the connection between PLC and VFD-B for example, the tables below explains the
status when PLC reads VFD-B status. (M1320 = OFF, ASCII Mode ), (M1320 = ON, RTU
Mode)
z If PLC applies COM1 for communication, the below program can be usable by changing:
1. D1109→D1036: communication protocol
2. M1136→M1138: retain communication setting
3. D1252→D1249: Set value for data receiving timeout
4. M1320→M1139: ASCII/RTU mode selection
5. M1316→M1312: sending request
6. M1318→M1314: receiving completed flag