Siemens Simatic 620 User Manual
Page 161
Hardware Information
7-29
SIMATIC Box PC 620 Manual
A5E00131465-01
Connection for LS240 Drive
The optional LS240 drive is connected via this port. This port is connected in
parallel with the secondary IDE port. The connected LS240 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