Siemens S7-300 appendix Functions Manual

Technical data of CPU 31xC 6.6 Technical data of the integrated I/O

Technical data

Table 6-12 Technical data of digital inputs

Technical data

		CPU 312C	CPU 313C	CPU 313C-2	CPU 314C-2
Module-specific data		CPU 312C	CPU 313C	CPU 313C-2	CPU 314C-2
Number of inputs		10	24	16	24
• Number of these inputs which can be used		8	12	12	16
	for technological functions
Cable length
•	Unshielded	For standard DI: Max. 600 m
		For technological functions: No
•	Shielded	For standard DI: Max. 1000 m
		For technological function at max. counting frequency
		100 m	100 m	100 m	50 m
Voltage, currents, potentials		CPU 312C	CPU 313C	CPU 313C-2	CPU 314C-2
Rated load voltage L+		24 VDC
•	Polarity reversal protection	Yes
Number of inputs which can be controlled
simultaneously
•	Horizontal assembly
	– up to 104 °F	10	24	16	24
	– up to 60 °C	5	12	8	12
•	Vertical assembly
	– up to 104 °F	5	12	8	12
Electrical isolation
• Between channels and the backplane bus		Yes
•	Between the channels	No
Permitted potential difference
•	Between different circuits	75 VDC / 60 VAC
Insulation test voltage		500 VDC
Current consumption
• On load voltage L+ (no-load)		–	Max. 70 mA	Max. 70 mA	Max. 70 mA
Status, interrupts, diagnostics		CPU 312C	CPU 313C	CPU 313C-2	CPU 314C-2
Status display		green LED per channel
Interrupts		• Yes, if the corresponding channel is configured as interrupt input
		• For using technological functions, please refer to the Technological
		Functions Manual.
Diagnostics functions		• no diagnostics when operated as standard I/O
		• For using technological functions, please refer to the Technological
		Functions Manual.

CPU 31xC and CPU 31x, Technical data	6-47
Manual, Edition 08/2004, A5E00105475-05