Siemens simatic c7-621 Hardware Installation Manual page 28

Installing and Preparing the C7
Analog Input/
Output
Table 2-4
AI1-U
AI1-I
AI1-M
AI2-U
AI2-I
AI2-M
AI3-U
AI3-I
AI3-M
AI4-U
AI4-I
AI4-M
AO-U
AO-I
AO-M
P Bus (IM 621)
Figure 2-9
2-10
Pinout of the Analog Inputs/Outputs
Pin
Analog input 1, signal input for voltage
Analog input 1, signal input for current
Analog input 1, reference potential
Analog input 2, signal input for voltage
Analog input 2, signal input for current
Analog input 2, reference potential
Analog input 3, signal input for voltage
Analog input 3, signal input for current
Analog input 3, reference potential
Analog input 4, signal input for voltage
Analog input 4, signal input for current
Analog input 4, reference potential
Analog output, signal output für voltage
Analog output, signal output für current
Analog output, reference potential
C7-621 with IM 621 Connector
Function
P bus connector
(IM 621)
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01