Siemens SIMATIC S7-1200

Technical specifications
A.10 Technology modules
Easy Book
340 Manual, 03/2014, A5E02486774-AF
Technical data
SM 1278 4xIO-Link Master signal module
Valid range high limit (DC)
28.8 VDC
Polarity reversal protection
Yes
Input current
Current consumption
65 mA; without load
Encoder supply
Number of outputs
4
Output current, rated value
200 mA
Power loss
Power loss, typ.
1 W, excluding port loading
Digital inputs/outputs
Cable length (meters)
20 m, unshielded, max.
SDLC
Cable length (meters)
20 m, unshielded, max.
IO-Link
Number of ports
4
Number of ports which can be controlled at the same
time
4
IO-Link protocol 1.0
Yes
IO-Link protocol 1.1
Yes
Operating mode
IO-Link
Yes
DI
Yes
DQ
Yes; max. 100 mA
Connection of IO-Link devices
Port type A
Yes
Transmission rate
4.8 kBd (COM1)
38.4 kBd (COM2)
230.4 kBd (COM3)
Cycle time, min.
2 ms, dynamic, dependent on the user data length
Size of process data, input per port
32 bytes; max.
Size of process data, input per module
32 bytes
Size of process data, output per port
32 bytes; max.
Size of process data, output per module
32 bytes
Memory size for device parameters
2 Kbytes
Cable length unshielded, max. (meters)
20 m
Interrupts/diagnostics/status information
Status display
Yes
Interrupts
Diagnostic interrupt Yes; port diagnostics is only available in IO-Link mode
Diagnostic alarms
Diagnostics