Configuration With Non-Isolated Modules - Siemens SIMATIC S7-300 Hardware And Installation Manual

Example:
For operation with an SM 334 AI 4/AO 2 analog I/O module you must connect one
of the grounding terminals M
The figure below shows a sample configuration of an S7-300 CPU with non-
isolated modules.
PS
L1
L1
N
N
PE
Ground bus
in cabinet
L+
M
external
DC 24 V load power supply
Figure 5-12 Configuration with non-isolated modules
S7-300 Programmable Controller Hardware and Installation
A5E00105492-02
to the CPU's chassis ground.
analog
S7-300 CPU
µP
L+
M
M
1mm 2
4AI/2AO
D D
A
A
M
analog
+ +
V
A
Configuring
U
Internal
Data
M
internal
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