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Installation and Commissioning
3.4
Installation on a Standard DIN Rail
What to do/steps
1. Open the snap catch and hang in the CP 243-1 IT on the DIN rail to the right
next to or above the CPU.
2. Close the snap catch to secure the CP 243-1 IT to the rail. Make sure that the
catch is snapped in correctly and the device is firmly secured to the rail.
Note
In environments in which strong vibration occurs or the devices are installed verti-
cally, it may be necessary to use standard DIN rail stoppers to keep the devices
from slipping on DIN hat rail.
3. Insert the ribbon cable of the CP 243-1 IT in the connection provided under the
front covering flap of the adjacent module or the S7-200 CPU. The shape of the
plug connector prevents it from being incorrectly inserted.
4. Connect the grounding terminal.
Connect the grounding terminal of the CP 243-1 IT with the next available
ground to obtain the highest possible interference immunity. We recommend
connecting all grounding terminals individually. Use lines with a cross section of
1.5 mm
5. Connect the power supply.
6. Connect the Ethernet cable.
The transmission medium is a 2 x 2-core, twisted pair, shielded line with a ripple
resistance of 100 Ohm. The transmission properties of this line must meet cate-
gory 5 requirements (Cat5Cable). The maximum length of the connection be-
tween terminal and network components (link segment) is limited to 100 m with
the components defined in IEEE802.3.
The RJ45 plug connector on the CP 243-1 IT is shielded so that, in combination
with a shielded Ethernet cable, a continuous cable shield is created which en-
sures interference-free Ethernet transmission. The shield of the RJ45 plug con-
nector is connected via the grounding terminal of the CP 243-1 IT.
We recommend shielding and grounding the Ethernet connection as described
in the document on SIMATIC NET twisted pair and fiber optic networks.
Installation is complete.
Note
Keep the front flap of the CP 243-1 IT closed during operation.
During installation, make sure that the upper and lower ventilation slits of the mod-
ule are not obstructed and good ventilation is possible.
52
2
for this.
03/03
CP 243-1 IT
J31069-D0429-U001-A0-7618
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