Detailed descriptions
16.1 Motherboard
SIMATIC Box PC 627
Operating Instructions, Release 05/2006, A5E00362052-03
16-13
I/O Front Interface for Operator Panels, X44
This interface carries all signals required for connecting operator panels in addition to the
display interface. The maximum cable length is 50 cm at a USB data rate of 12 Mbit/s.
Pin–No. Short description Meaning Input/Output
1 GND Ground -
2 P12V Inverter voltage supply Output
3 BL_ON Backlight on (5 V = On) Output
4 P5V_fused +5 V (fused) Output
5 GND Ground -
6 P3V3_fused +3.3 V VCC (fused) Output
7 Reserved reserved -
8 Reserved reserved -
9 Reserved reserved -
10 Reserved reserved -
11 P5V_fused +5 V (fused) Output
12 USB_D1M USB data channel 1 Input/Output
13 USB_D1P USB data+, channel 1 Input/Output
14 GND Ground -
15 LCD_SEL0 Display Type-Select Signal 0 Input
16 LCD_SEL1 Display Type-Select Signal 1 Input
17 LCD_SEL2 Display Type-Select Signal 2 Input
18 LCD_SEL3 Display Type-Select Signal 3 Input
19 RESET_N Reset signal (active low) Input
20 reserved reserved -
21 HD_LED HD LED, anode with 1 kW in series on the
motherboard
Output
22 DP_LED MPI/DP LED, anode via 1 KOhms in series on the
motherboard
Output
23 Ethernet_LED Ethernet LED, anode with 1 kW in series on the
motherboard
Output
24 TEMP_ERR Temperature error LED, anode with 1 kW in series
on the motherboard
Output
25 RUN_R Watchdog error LED, anode with 1 kW in series on
the motherboard
Output
26 RUN_G Watchdog OK LED, anode with 1 kW in series on
the motherboard
Output
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