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WPMZ Series Modbus communication instruction manual
IM-0862-02
Number of pages:109
8
2-4.
Module wiring (RS-232C communication option)
2-4-1.
Connection terminal
The figure below shows the RS - 232C connection terminal of WPMZ - 5/6.
Table 2.6 Connector contents
Terminal
number
symbol
Contents
28
RXD
Receive terminal
29
TXD
Transmission terminal
30
SG
Common terminal of
communication function
31~34
NC
Not connected ※ Please
do not use as relay
terminal.
2-4-2.
Configuration diagram example
The configuration example of WPMZ - 5/6 is shown below.
Master and slave (module) are connected 1: 1.
Specify "1" for the slave address of the Modbus protocol.
Figure 2.5 Wiring of RS-232C communication
Figure 2.6 When USB-RS232C converter is used
マスター
USB RS-232C
converter
computer
Slave (module)
USB
RS-232C
R
X
D
T
X
D
S
G
N
C
N
C
N
C
N
C
34
28 29 30 31 32 33
Suitable wire:AWG24 to 16