Table of Contents
Advertisement
Installation and commissioning
3.4
Installation on a standard DIN rail
Procedure / steps
1. Open the locking latch and mount the CP 243-1 on the DIN rail immediately to
the right of the CPU or over the CPU.
2. Close the locking latch to fasten the CP 243-1 onto the rail. Ensure that the
latch engages properly and that the device is securely fastened to the rail.
Note
In environments subject to strong vibrations, or for vertical installation, it may be
necessary to prevent the devices from shifting on the DIN rail by using standard
DIN rail stoppers.
3. Insert the ribbon cable of the CP 243-1 into the connector provided beneath the
front cover of the adjacent module or the S7-200 CPU. The plug is shaped in
such a way that it cannot be incorrectly connected.
4. Connect the ground terminal:
Connect the ground terminal of the CP 243-1 to the next available ground to
achieve maximum interference immunity. Connect all ground terminals sepa-
rately is recommended. Use cables with a cross section of 1.5 mm
5. Connect the voltage supply.
6. Connect the Ethernet cable.
The transmission line is a 2 x 2-wire, shielded twisted-pair cable with a charac-
teristic impedance of 100 Ohm. The transmission characteristics of this cable
must meet the specifications of Category 5 (Cat5 cable). The maximum length
of the connection between terminal device and network component (link seg-
ment) is limited to 100 m for the components defined in IEEE802.3.
Because the RJ45 connector in the CP 243-1 is also shielded, use of a shielded
Ethernet cable results in a continuous cable shield that ensures interference-
free Ethernet transmission. The RJ45 connector shield is connected to the
CP 243-1 ground terminal.
It is recommended that you ensure that the shield is well-grounded at both ends
of the transmission line. If, contrary to this recommendation, unshielded cables
are used or the shielding is not or improperly grounded at either end, it cannot
be guaranteed that the technical data with regard to electromagnetic radiation
and interference immunity will be met. In this event, responsibility for complying
with the maximum legal limits for electromagnetic radiation and interference
immunity (CE mark) lies with the operator of the system.
Installation of the device is now complete.
26
09/02
2
.
CP 243-1
J31069-D0428-U001-A1-7618
Advertisement
Table of Contents
