CPUs
1-31
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Technical Specifications of the Special Inputs of the CPU 312IFM
Module-Specific Data
Number of inputs 4
I 124.6 to 125.1
Cable length
Shielded max. 100 m (109yd.)
Voltages, Currents, Potentials
Number of inputs that can
be triggered simultaneously
(horizontal
configuration)
up to 60°C
(vertical configuration)
up to 40°C
4
4
4
Status, Interrupts; Diagnostics
Status display 1 green LED per
channel
Interrupts
Process interrupt Configurable
Diagnostic functions None
Sensor Selection Data
Input voltage
Rated value
For “1” signal
I 125.0 and I 125.1
I 124.6 and I 124.7
For “0” signal
24V DC
15 to 30 V
15 to 30 V
-3 to 5 V
Input current
For “1” signal
I 125.0 and I 125.1
I 124.6 and I 124.7
min. 2 mA
min. 6.5 mA
Input delay time
For “0” to “1”
For “1” to “0”
max. 50 s
max. 50 s
Input characteristic
E 125.0 and E 125.1
E 124.6 and 124.7
to IEC 1131, Type 1
to IEC 1131, Type 1
Connection of 2-wire
BEROs
Permissible idle current
I 125.0 and I 125.1
I 124.6 and I 124.7
no
max. 0.5 mA
max. 2 mA
Time, Frequency
Internal conditioning time
for
Interrupt processing
max. 1.5 ms
Input frequency 10 kHz
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