Installation and commissioning 09/02
CP 243-1
20 J31069-D0428-U001-A1-7618
3 Installation and commissioning
Installation
The devices of the S7-200 series can be installed either in a control panel or on a
DIN rail. The modules can be arranged both horizontally and vertically. The
S7-200 CPU and the extension modules are designed to naturally dissipate heat
by means of convection. Therefore, leave a space of at least 25 mm both above
and below the device to ensure adequate heat dissipation. Long operating times at
maximum ambient temperature and maximum load shorten the operating life of the
electronic components.
Note
The position in an S7-200 system in which a CP 243-1 can be operated depends
on the firmware version of the S7-200 CPU.
When using firmware version 1.2 or higher, the CP 243-1 can be installed in any
position in an S7-200 system. For firmware versions below version 1.2, the
CP 243-1 must be installed directly next to the S7-200 CPU.
Wiring
!
Warning
If you attempt to install or remove the CP 243-1 or other devices with the
equipment switched on, you may receive an electric shock or the devices may
not operate properly.
If the power supply for the CP 243-1 and all connected devices is not switched
off while the devices are being installed or removed, this may result in personal
injury and/or damage to equipment.
Take all necessary safety precautions and ensure that the power supply for the
S7-200 and the CP 243-1 has been switched off before wiring the system.
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