Siemens S7-1200 - Page 884

Technical specifications
A.6 CPU 1217C
S7-1200 Programmable controller
884 System Manual, 03/2014, A5E02486680-AG
Technical data
CPU 1217C DC/DC/DC
Overload protection
No
Isolation (field side to logic)
500 VAC for 1 minute (functional isolation)
Isolation groups
1
Inductive clamp voltage
L+ minus 48 VDC, 1 W dissipation
Switching delay (Qa.0 to Qa.3) 1.0 μs max., off to on
3.0 μs max., on to off
Switching delay (Qa.4 to Qb.1) 50 μs max., off to on
200 μs max., on to off
Maximum relay switching frequency
--
Pulse Train Output rate 100 KHz max. (Qa.4 to Qb.1)
1
, 2 Hz min.
Type: 1.5 V Differential output
Qa.0 to Qa.3 (.0+ 0- to .3+ .3-)
Common mode voltage range
-7 V to +12 V, 1 second, 3 VRMS continuous (RS485 characteristics)
Transmitter differential output voltage
2 V min. at RL = 100 Ω, 1.5 V min. at RL = 54 Ω
Termination
100 Ω between Qa'+' and Qa'-'
Driver output impedance
100 Ω including termination
Isolation
500 VAC, 1 minute (functional isolation)
Isolation groups
1
Switching delay (DQa.0 to DQa.3)
100 ns max.
Differential output channel-to-channel
skew
40 ns max.
Pulse train output rate
1 MHz (Qa.0 to Qa.3), 2 Hz min.
General specifications
(all digital outputs)
Behavior on RUN to STOP
Last value or substitute value (default value 0)
Number of outputs on simultaneously 3 Solid state - MOSFET (sourcing) outputs (no adjacent points) and 4 differential
outputs at 60 °C horizontal or 50 °C vertical
10 at 55 °C horizontal or 45 °C vertical
Cable length (meters)
500 m shielded, 150 m unshielded
1
Depending on your pulse receiver and cable, an additional load resistor (at least 10% of rated current) may improve
pulse signal quality and noise immunity.