Siemens SIMATIC S7-1200 - Page 1540

Technical specifications
A.16 Communication interfaces
S7-1200 Programmable controller
1540 System Manual, V4.2, 09/2016, A5E02486680-AK
Note
Maximum current carrying capacity of the terminal contacts
The current carrying capacity of the connection contacts is max. 8
A. If this value is
exceeded on the AS
-i cable, the AS-i master CM 1243-2 must not be "looped in" to the AS-
i
cable, but must instead be connected via a spur line (only one connection pair assigned on
the AS
-i master CM 1243-2).
Please also ensure that the cables used are
suitable for operating temperatures of at least
75 °C if current is being conducted via the AS
-i master and currents of greater than 4
amperes are present.
You will find additional information on connecting the AS
-i cable in the section "Installation,
conn
ection and commissioning of the modules" in the manual "AS-i Master CM 1243-2 and
AS
-i data decoupling unit DCM 1271 for SIMATIC S7-1200".
Terminal assignment
Label
Meaning
ASI+
AS-i connection – positive polarity
ASI–
AS-i connection – negative polarity
Functional ground