Siemens SIMATIC C7-626, Installation, Assembly, Wiring

Page: 30 / 144

2
2-12
C7-626 / C7-626 DP Control Systems
C79000-G7076-C626-01
Table 2-3 Pin Assignments of the Analog Inputs/Outputs
Pin No. Explanation
AI1-U Analog input 1, signal input for voltage
AI1-I Analog input 1, signal input for current
AI1-M Analog input 1, reference potential
AI2-U Analog input 2, signal input for voltage
AI2-I Analog input 2, signal input for current
AI2-M Analog input 2, reference potential
AI3-U Analog input 3, signal input for voltage
AI3-I Analog input 3, signal input for current
AI3-M Analog input 3, reference potential
AI4-U Analog input 4, signal input for voltage
AI4-I Analog input 4, signal input for current
AI4-M Analog input 4, reference potential
M
ANA
Reference potential of analog measuring circuit
AO-U Analog output, signal output for voltage
AO-I Analog output, signal output for current
AO-M Analog output, reference potential
Table 2-4 Pin Assignments of the Universal Inputs
Pin No. Explanation
M Relevant ground
DI-X1 Universal input 1 (digital input, interrupt input or counter input)
DI-X2 Universal input 2 (digital input, interrupt input or counter input)
DI-X3 Universal input 3 (digital input, interrupt frequency or period duration
counter input)
DI-X4 Universal input 4 (interrupt input or digital input)
– Not connected
– Not connected
– Not connected
Analog Inputs/
Outputs
AUX Digital Inputs
(Universal Inputs)
Installing and Preparing the C7