Front Interfaces - Siemens SIMATIC PANEL PC 877 Operating Instructions Manual

17.1.5

Front interfaces

Overview
Interface
Display (LVDS)
Display (LVDS)
I/O front
COM2
USB
Display interfaces
TFT displays with an LVDS interface can be connected to this interface. You may connect
18-bit displays with a resolution up to 1024x768 pixels on X300 only (single-channel LVDS),
and of 1280 x 1024 pixels on X300 and X301 (dual-channel LVDS). X301 is also connected
to a +12VF at max. 4.2. A power supply for backlight inverters for 17" / dual-channel LVDS
displays. The permitted display clock rate is 20MHz to 66MHz. The display is selected
automatically according to the coding of the display select inputs.
The display power supply voltages (3.3V and 5V) are switched via the graphic controller,
independent of the requirements of the connected display units. The maximum cable length
is 50 cm at a transmission rate of 455 MHz. Make allowances for the special channel
features of differential line pairs with LVDS specifications.
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
Position Connector
Internal X300
Internal X310
Internal X44
Internal X33
Internal X2033
Detailed descriptions
17.1 Motherboard
Description
Connection of LCD displays with
LVDS interface (channel 1)
Connection of LCD displays with
LVDS interface (channel 2)
Interface for I/O front
Internal COM2 interface
Internal USB 2.0 interface (USB
channel 5)
17-13