Installing And Connecting The Cp 142-2 - Siemens SIMATIC NET CP 142-2 Manual

B8976111/02

2.1.3 Installing and Connecting the CP 142-2

The assembly of the module and connection to the ET 200X distributed I/O system is the same as for
other expansion modules. For more detailed information, please refer to the "ET 200X Distributed I/O
System" manual /4/.
There are several ways of attaching to the AS-i bus and two possible methods are described here.
Direct attachment to the AS-i cable using the AS-Interface adapter M12
± ±
You attach an AS-Interface adapter M12 to the AS-i cable to change from the flat cable to the
M12 connection and screw this directly to the connector on the CP 142-2 . Follow the
instructions in the installation guide shipped with the adapter. Remember the following point:
The AS-Interface adapter M12 is often the end of an AS-i chain. In this case, insert the rubber
stopper in the open end of the adapter as explained in the installation guide.
Before you screw the AS-Interface adapter M12 in place, make sure that after it is screwed to
the connector of the CP 142-2, the AS-i cable exits downwards and not towards the neighboring
module. If the cable does exit towards the neighboring module, rotate the connection in the
adapter through 90° as explained in the installation guide.
Figure 2-2 Direct Attachment of the AS-i Cable to the CP 142-2
2-4
AS-i Master Module CP 142-2