Siemens S7-1200 System Manual page 885

1.5 V Differential input detail
Notes:
• Each Differential DI is biased "OFF" when terminal block screws are open-circuit.
• Termination and Bias = 100 Ω.
Table A- 96 CPU 1217C Digital input (DI) H/W configuration table
Input Type and rate
DIa.0 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.1 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.2 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.3 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.4 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.5 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 100 kHz max.
DIa.6 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 30 kHz max.
DIa.7 Type: 24 V, source-sink Type 1 input
High-speed counter input rate: 30 kHz max.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
Technical specifications
A.6 CPU 1217C
885