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WPMZ Series Modbus communication instruction manual
IM-0862-02
Number of pages:109
7
3.
Connection diagram
The Modbus connection of WPMZ - 5/6 is shown below.
Please set the terminating resistance to the master and slave at the final end (WPMZ in the figure
below).
Table 2.5 Modbus connection terminal (WPMZ - 5/6)
Terminal
number
symbol
Contents
28,31
RS485
+
Communication plus
terminal
29,32
-
Communication minus
terminal
30
SG
Communication SG
terminal
33,34
TERM (※)
Terminal resistor terminal
(120 Ω)
※
When connecting the TERM terminals to each other, the terminating resistance becomes
effective.
Figure 2.4 Modbus connection of WPMZ-5/6
With
terminating
resistance
Shield cable
Shield cable
※ When WPMZ - 5/6 is
terminated, connect the
TERM terminals together.
Twisted pair wire
WPMZ-5/6:AWG24~16
Slave
Slave
WPMZ
Master
SG
SG
-
-
+
+
+
-
+
-
SG
S
G
T
T
Shield cable