Siemens SIMATIC S7-1200

Technical specifications
A.12 Technology modules
S7-1200 Programmable controller
1488 System Manual, V4.2, 09/2016, A5E02486680-AK
Pin
X10
X11
X12
X13
6
C/Q
1
C/Q
2
C/Q
3
C/Q
4
7 M
1
M
2
M
3
M
4
A.12.1.1
SM 1278 4xIO-Link Master overview
The SM 1278 4xIO-Link Master is a 4-port module that functions as both a signal module
and a communication module. Each port can operate in the IO-Link mode, single 24 V DC
digital input or 24 V DC digital output.
The IO-Link master programs acyclic communication with an IO-Link device using the
IOL_CALL function block (FB) in your STEP 7 S7-1200 controller program. The IOL_CALL
FB indicates the IO-Link master your program uses, and which ports the master uses for
data exchange.
Visit the Siemens Industry Online Support website (http://support.industry.siemens.com) for
details on working with the IOL_CALL FB. Enter "IO-Link" in the website's search box to
access information about IO-Link products and their use.
View of the module