
136
6 WIRING
6.7 Analog Wiring
6.7
Analog Wiring
Wiring to the built-in analog I/O terminals of the CPU module is explained below.
For specifications of the built-in analog I/O terminals of the CPU module, refer to
Page 30 Built-in Analog Specifications.
Analog input wiring
*1 For analog input wiring, use shielded twisted-pair cables (double-core type). Separate them from other power lines or lines which can be
induced by others.
*2 For unused channels, short-circuit the "V
+" and "V-" terminals.
When used as a current input, refer to
Page 172 How to use analog inputs built in CPU module for current inputs.
Analog output wiring
*1 For analog output wiring, use shielded twisted-pair cables (double-core type). Separate them from other power lines or lines which can
be induced by others.
*2 Ground a shielded cable at one point on the signal receiving side.
CH No. goes in
of V
+, CH
.
CH
33 k
82.7 k
V-
V
+
Shield
*1
*2
Class D grounding
(grounding resistance: 100
or less)
V-
V+
Class D grounding
(grounding resistance: 100
or less)
*2
Shield
*1
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