Siemens Simatic 620 - Manual (Page 150)

Hardware Information
7-18
SIMATIC Box PC 620 Manual
A5E00131465-01
7.5.2 Assignment of the Front Ports on the Motherboard
Port Position Connector Description
Display (CMOS) Internal X420 Connection of LC displays with CMOS port
Display (LVDS) Internal X400 Connection of LC displays with single chip
LVDS port
I/O Front Internal X44 Port for front Front I/O
COM2 Internal X26 Internal COM2 port
Display Port (CMOS, X420)
D-STN and TFT displays with 5V CMOS port and VGA resolution (640x480) can
be connected to this port. The display is selected and the D-STN/TFT signals
allocated automatically in accordance with the coding of the Display Select inputs.
The maximum cable length is 50 cm with a display clock rate of 25 MHz.