Siemens S7-1200 System Manual page 941
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
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Table A- 197 Digital outputs
Technical data
Number of outputs
Output type
Voltage range
Rated value
Logic 1 signal at max. current
Logic 0 signal at max. current
Current (max.)
Lamp load
On state contact resistance
Off state resistance
Leakage current per point
Pulse Train Output 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)
Because both sinking and sourcing configurations are supported by the same circuitry, the active state of a sourcing
1
load is opposite that of a sinking load. A source output exhibits positive logic (Q bit and LED are ON when the load has
current flow), while a sink output exhibits negative logic (Q bit and LED are OFF when the load has current flow). If the
module is plugged in with no user program, the default for this module is 0 V, which means that a sinking load will be
turned ON.
Note
When switching frequencies above 20 kHz, it is important that the digital inputs receive a
square wave. Consider the following options to improve the signal quality to the inputs:
• Minimize the cable length
• Change a driver from a sink only driver to a sinking and sourcing driver
• Change to a higher quality cable
• Reduce the circuit/components from 24 V to 5 V
• Add an external load at the input
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
SB 1223 DI 2 x 24 VDC /
DQ 2 x 24 VDC, 200 kHz
2
Solid state - MOSFET sink and source
20.4 to 28.8 VDC
24 VDC
L+ minus 1.5 V
1.0 VDC, max.
0.1 A
--
11 Ω max.
6 Ω max.
--
200 kHz max., 2 Hz min.
0.11 A
No
500 VAC for 1 minute
1 (no isolation to inputs)
0.2 A
None
1.5 μs + 300 ns rise
1.5 μs + 300 ns fall
Last value or substitute
(default value 0)
2
50 shielded twisted pair
Technical specifications
A.11 Digital signal boards (SBs)
SB 1223 DI 2 x 5 VDC /
DQ 2 x 5 VDC, 200 kHz
2
Solid state - MOSFET sink and source
1
4.25 to 6.0 VDC
5 VDC
L+ minus 0.7 V
0.2 VDC, max.
0.1 A
--
7 Ω max.
0.2 Ω max.
--
200 kHz max., 2 Hz min.
0.11 A
No
500 VAC for 1 minute
1 (no isolation to inputs)
0.2 A
None
200 ns + 300 ns rise
200 ns + 300 ns fall
Last value or substitute
(default value 0)
2
50 shielded twisted pair
1
941
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