Siemens SIMATIC S7-1200

Technical specifications
A.10 Technology modules
Easy Book
Manual, 03/2014, A5E02486774-AF
341
Technical data
SM 1278 4xIO-Link Master signal module
Monitoring of supply voltage
Yes
Short circuit
Yes
Diagostic indicator LED
Monitoring of supply voltage
Yes; flashing red DIAG LED
Channel status display Yes; per channel one green LED for channel status Qn
(SIO mode) and PORT status Cn (IO-Link mode)
For channel diagnostics
Yes; red Fn LED
For module diagnostics
Yes; green/red DIAG LED
Electrical isolation
Electrical isolation channels
Between the channels
No
Between the channels and the backplane bus
Yes
Permitted potential difference
Between the different circuits
75 VDC / 60 VAC (basic insulation)
Insulation
Insulation tested with
707 VDC (type test)
Ambient conditions
Operating temperature
Min.
-20 °C
Max.
60 °C
Horizontal installation, min.
-20 °C
Horizontal installation, max.
60 °C
Vertical installation, min.
-20 °C
Vertical installation, max.
50 °C
Overview of the response time