Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 163)

Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
6-53
Technical data
Connection of signal generators
• For voltage measurement Possible
• For current measurement
–
as 2-wire measuring transducer
– as 4-wire measuring transducer
Possible, with external power supply
Possible
• for measuring resistance
–
with 2-wire connection
– with 3-wire connection
– with 4-wire connection
Possible, without compensation of
cable resistance
Not possible
Not possible
Linearization of the characteristics trend By software
• For resistance thermometers Pt 100
Temperature compensation No
Technical unit for temperature measurement Degrees Celsius/Fahrenheit/Kelvin
6.6.9 Analog outputs
Introduction
This chapter contains the specifications for digital outputs of CPUs 31xC.
The table includes the following CPUs:
•
CPU 313C
• CPU 314C-2 DP
• CPU 314C-2 PtP
Technical data
Table 6-15 Technical data of analog outputs
Technical data
Module-specific data
Number of outputs
2
Cable length
• Shielded Max. 200 m
Voltage, currents, potentials
Rated load voltage L+
24 VDC
• Polarity reversal protection Yes
Electrical isolation
• Between channels and the backplane bus Yes
• Between the channels No