Siemens SIMATIC PANEL PC 877 - Manual (Page 205)

Detailed descriptions
17.1 Motherboard
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
17-13
17.1.5 Front interfaces
Overview
Interface Position Connector Description
Display (LVDS) Internal X300 Connection of LCD displays with
LVDS interface (channel 1)
Display (LVDS) Internal X310 Connection of LCD displays with
LVDS interface (channel 2)
I/O front Internal X44 Interface for I/O front
COM2 Internal X33 Internal COM2 interface
USB Internal X2033 Internal USB 2.0 interface (USB
channel 5)
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.