3 Devices
◎ Setting a communication format:
COM1 1. D1036 is used to set a communication format. Bit 8~bit 15 in
D1036 do not support the setting of a communicaiton format.
2. M1138: The setting of the communication through COM1 is
retained.
3. M1139: Selecting an ASCII mode or an RTU mode
COM2 1. D11120 is used to set a communication format.
2. M1120: The setting of the communication through COM2 is
retained.
3. M1143: Selecting an ASCII mode or an RTU mode
COM3 1. D1109 is used to set a communication format. Bit 0~bit 3 and Bit
8~bit 15 in D1036 do not support the setting of a communicaiton
format.
2. M1136: The setting of the communication through COM3 is
retained.
Communication format:
Contents 0 1
b0
Data length b0=0: 7 b0=1: 8
b2, b1=00 : None
b2, b1=01 : Odd
b1
b2
Parity bit
b2, b1=11 : Even
b3
Stop bit b3=0: 1 bit b3=1: 2 bits
b7~b4=0001 (H1) : 110 bps
b7~b4=0010 (H2) : 150 bps
b7~b4=0011 (H3) : 300 bps
b7~b4=0100 (H4) : 600 bps
b7~b4=0101 (H5) : 1,200 bps
b7~b4=0110 (H6) : 2,400 bps
b7~b4=0111 (H7) : 4,800 bps
b7~b4=1000 (H8) : 9,600 bps
b7~b4=1001 (H9) : 19,200 bps
b7~b4=1010 (HA) : 38,400 bps
b7~b4=1011 (HB) : 57,600 bps
b7~b4
b7~b4=1100 (HC) : 115,200 bps
b8
Start character b8=0: None b8=1: D1124
b9
First terminator b9=0: None b9=1: D1125
b10
Second terminator b10=0: None b10=1: D1126
b15~b11
Undefined
Example 1: Modifying the communication format of COM2
If users want to modify the communication format of COM2 on a DVP-20PM series
motion controller, they have to add the program shown below to the top of the
program in the DVP-20PM series motion controller. After the STOP/RUN switch on
the DVP-20PM series motion controller is turned from the STOP position to the
RUN position, the state of M1120 will be detected during the first scan cycle. If
M1120 is ON, the setting of COM2 will be changed in accordance with the value in
D1120.
The communication format of COM2 is changed to the ASCII format 9600, 7, E 1
(9,600bps, 7 data bits, even parity bit, 1 stop bit).
MOV
H86 D1120
SET M1120
M1002
DVP-20PM Application Manual
3-32
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