Siemens SIMATIC Box PC 840 Manual page 148

Hardware Information
Assignment of the IDE Ports, X7, X10
The primary IDE port is intended for the installation of a 3.5" hard disk. It is
connected via a 40 pin 2.54 mm latching connector. The secondary IDE port is
intended for the optional connection of a CD ROM. It is adaptable via a 44 pin
2 mm latching connector. The maximum connection length of the data cables may
not exceed 40 cm.
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
7-26
Designation X7 Description
RESET Reset
GND Ground
D7 Data signal D7
D8 Data signal D8
D6 Data signal D6
D9 Data signal D9
D5 Data signal D5
D10 Data signal D10
D4 Data signal D4
D11 Data signal D11
D3 Data signal D3
D12 Data signal D12
D2 Data signal D2
D13 Data signal D13
D1 Data signal D1
D14 Data signal D14
D0 Data signal D0
D15 Data signal D15
GND Ground
– Unassigned
DREQ DMA Request
GND Ground
IOW_N Write signal
GND Ground
IOR_N Read signal
GND Ground
IORDY Ready signal
Reserved Reserved
DACK_N DMA Acknowledge
GND Ground
IRQ Interrupt signal
– Unassigned
AD_1 Adress 1
Reserved Reserved
AD_0 Adress 0
AD_2 Adress 2
CS1_N Chip Select 1
CS3_N Chip Select 3
HDACT_N HD active
GND Ground
Input / Output
Output
-
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
Input / Output
-
-
Input
-
Output
-
Output
-
Input
-
Output
-
Input
-
Output
-
Output
Output
Output
Output
Input
-
SIMATIC Box PC 840 Manual
A5E00085984-04