Eng
lish (US)
16
12.3 Service
12.3.1 Service tools
12.4 Overview of inputs and outputs
12.4.1 Layout of the back of the CU 323
Fig. 10 Back of the CU 323
12.4.2 Terminal groups
Designation
Further information
Product
number
PC Tool Link
USB
96705378
Anti-static service kit
96884939
TM
04
92
82
38
10
Group
Description
1
Connection of power supply
2
Internal GENIbus connection
3
Fieldbus connection (CIM module) (optional)
4
Input for PTC sensor or thermal switch
5
Analog inputs
6
Digital output
7
Relay outputs
8
Digital inputs
9
Service connection
Abbreviation
Meaning
DI
Digital input
DO
Digital output
RO
Relay output
AI
Analog input
NC
Normally closed contact
NO
Normally open contact
C
Common
PTC
Positive temperature coefficient
