Technical data

Hardware Information
8-36
SIMATIC Box PC 620 Manual
C79000-G7076-C639-02
Connection for LS120 Drive (X31)
The optional LS120 drive is connected via this port. This port is connected in
parallel with the secondary IDE port. The connected LS120 drive is automatically
master (i.e. bootable drive) as the result of a special RC circuit. The maximum
connection length of the data cable may not exceed 40cm.
Pin No.
X31 Meaning
1 RESET Reset
2 GND
3 D8 Data signal D8
4 D7 Data signal D7
5 D9 Data signal D9
6 D6 Data signal D6
7 D10 Data signal D10
8 D5 Data signal D5
9 D11 Data signal D11
10 D4 Data signal D4
11 D12 Data signal D12
12 D3 Data signal D3
13 D13 Data signal D13
14 D2 Data signal D2
15 D14 Data signal D14
16 D1 Data signal D1
17 D15 Data signal D15
18 D0 Data signal D0
19 GND
20 DREQ DMA Request
21 GND
22 IOW_N IO Write
23 GND
24 IOR_N I/O Read
25 GND
26 IORDY I/O Ready
27 Reserved
28 DACK_N DMA Acknowledge
29 TBD
30 GND
31 Reserved reserved
32 IOCS16 I/O Chip Select 16
33 AD_2 Address 2
34 AD_1 Address 1
35 CS3_N Chip Select 3
36 AD_0 Address 0
37 HDACT_N HD active
38 CS1_N Chip Select 1
39 TBD
40 P5V +5V power supply
41 P5V +5V power supply