Siemens Simatic PC Panel PC 870 Service Manual download pdf (Page 48)

Remote Mount Form Factor

5-4

SIMATIC Panel PC 670 / 870 Operating Unit, Equipment Manual

Edition 07/02

5.1.2 Block diagram

The logical design of the remote mount form factor can be seen in Figure 5-2:

S The transmitter is mounted on the computing unit.

S The receiver is mounted on the operating unit.

S The distance between the transmitter and the receiver (not more than 20 m) is brid-

ged by the interconnecting cable.

Operating unit

Keyboard

Power supply

AC DC or DC DC

120 – 240 V or 24 V

Computing unit

Keyboard

Max. 20m

Interconnecting cable

12 V DC, 5 V DC,

3.3 V DC

Display

LVDS Rec.

HUB

LVDS

USB

Power

supply

120 – 240 V

24 V

Receiver

Transmitter

Fig. 5-2 Block diagram of central configuration

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Siemens Simatic PC Panel PC 870 Service Manual Page 48