Siemens SIMATIC 627B, Operating Instructions Manual

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Detailed descriptions
16.1 Motherboard
SIMATIC Box PC 627B
Operating Instructions, 06/2008, A5E00927393-02
159
I/O front port for operator panels, X44
This port 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 Mbps.
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 kOhm in series on the
motherboard
Output
22 DP_LED MPI/DP LED, anode via 1 kOhm in series on the
motherboard
Output
23 Ethernet_LED Ethernet LED, anode with 1 kOhm in series on the
motherboard
Output
24 TEMP_ERR Temperature error LED, anode with 1 kOhm in series
on the motherboard
Output
25 RUN_R Watchdog error LED, anode with 1 kOhm in series on
the motherboard
Output
26 RUN_G Watchdog OK LED, anode with 1 kOhm in series on
the motherboard
Output