Siemens S7-1200 System Manual page 944

Technical specifications
A.11 Digital signal boards (SBs)
Table A- 203 Digital outputs
Technical Data
Number of outputs
Output type
Voltage range
Logic 1 signal at max. current
Logic 0 signal with 10K Ω load
Current (max.)
Lamp load
On state contact resistance
Leakage current per point
Pulse Train Output (PTO) rate
Surge current
Overload protection
Isolation (field side to logic)
Isolation groups
Currents per common
Inductive clamp voltage
Switching delay
Behavior on RUN to STOP
Number of outputs on simultaneously
Cable length (meters)
Depending on your pulse receiver and cable, an additional load resistor (at least 10% of rated current) may improve
1
pulse signal quality and noise immunity.
944
SB 1223 DI 2 x 24 VDC, DQ 2 x 24 VDC
2
Solid state - MOSFET (sourcing)
20.4 to 28.8 VDC
20 VDC min.
0.1 VDC max.
0.5 A
5 W
0.6 Ω max.
10 μA max.
20 KHz max., 2 Hz min.
1
5 A for 100 ms max.
No
500 VAC for 1 minute
1
1 A
L+ minus 48 V, 1 W dissipation
2 μs max. off to on
10 μs max. on to off
Last value or substitute value (default value 0)
2
500 m shielded, 150 m unshielded
System Manual, 03/2014, A5E02486680-AG
S7-1200 Programmable controller