Technical data

Computing Unit Expansions
4-34
SIMATIC Panel PC 670 Computing Unit Equipment Manual
Edition 12/01
High data transfer rate at distances up to 1000 m
In order to maintain a data transmission rate of 9600 bps up to a distance of
1000 m, the receive diode is connected to ground (reference) via the connecting
cable. Cables of various lengths are available under the order number
6ES5 734-2xxx0 (xxx stands for the length code).
4.12 Reset Button
A hardware reset is initiated by means of the reset button on your device. The
computing unit is restarted (cold restart).
On the computing unit, the reset button is located on the drive side beside the
floppy disk drive. The reset button can only be operated with the aid of a pointed
object (for example, tip of a ball-point pen or elongated paper clip). The position of
the reset button is marked in the illustration of the computing unit below.
Reset button
Figure 4-24 Reset Button on the Computing Unit