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3.3
Installation in a control panel
Procedure / steps
1. Provide the control panel with drill holes for bolts of size DIN M4. Adhere to the
notes and dimensions stated in Sections 3 and 3.1 for installation in a control
panel.
2. Screw the CP 243-1 into the control panel immediately to the right of the CPU
for horizontal installation and over the CPU for vertical installation. Use bolts of
size DIN M4.
3. Insert the ribbon cable of the CP 243-1 in the connector provided beneath the
front cover of the adjacent module or of 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. Connecting 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.
Note
The front doors of the CP 243-1 must be kept closed during operation.
The device must be installed in such a manner that the upper and lower air ducts
of the module are not obstructed and that air can circulate freely.
CP 243-1
J31069-D0428-U001-A1-7618
Installation and commissioning
2
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25
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