SIMATIC IPC847C
Getting Started, 12/2010, A5E02669190-02
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Connection
5
5.1 Connecting peripherals
Note before connecting
NOTICE
Connect only peripherals approved for industrial applications according to EN 61000-6-2.
Shielded interface cables must be used for interfaces integrated ex factory.
Note
Hot-plug I/O modules (USB) may be connected while the PC is in operation.
CAUTION
I/O devices that are incapable of hot-plugging may only be connected after the device has
been disconnected from the power supply.
CAUTION
Strictly adhere to the specifications in the I/O manuals.
NOTICE
The connected or built-in peripherals should not introduce a counter emf into the device.
A counter emf greater than 0.5 V to ground on the + 3.3 VDC / + 5 VDC / + 12 VDC power
rail due to a connected or integrated component can prevent normal operation or even
destroy the computer.
When measuring the counter emf, remember the following:
The computer in question must be turned off and the power supply connector should be
plugged in.
During the measurement, all cables from the plant to the computer should be
connected.
All other components in the plant must be active.
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