Siemens SIMATIC Panel PC 870 Equipment Manual page 112

Hardware Information
Assignment of the IDE ports (X7, X10)
The primary IDE port is designed for alternatively installing a 3.5" hard disk
(connection via a 40-pin 2.54 mm pitch connector). The secondary IDE port is
provided for the optional connection of a CD-ROM (connection via 44–pin 2 mm
pitch connector. Maximum connection length of the data cables: 40 cm.
Pin No. Short Name X7
1 RESET
2 GND
3 D7
4 D8
5 D6
6 D9
7 D5
8 D10
9 D4
10 D11
11 D3
12 D12
13 D2
14 D13
15 D1
16 D14
17 D0
18 D15
19 GND
20 NC
21 DREQ
22 GND
23 IOW_N
24 GND
25 IOR_N
26 GND
27 IORDY
28 Reserved
29 DACK_N
30 GND
31 IRQ
32 NC
33 AD_1
34 Reserved
35 AD_0
36 AD_2
37 CS1_N
38 CS3_N
39 HDACT_N
40 GND
7-22
Meaning
Reset signal
Ground
Data signal D7
Data signal D8
Data signal D6
Data signal D9
Data signal D5
Data signal D10
Data signal D4
Data signal D11
Data signal D3
Data signal D12
Data signal D2
Data signal D13
Data signal D1
Data signal D14
Data signal D0
Data signal D15
Ground
Not connected
DMA request
Ground
Write signal
Ground
Read signal
Ground
Ready signal
Reserved
DMA confirmation
Ground
Interrupt signal
Not connected
Address line 1
Reserved
Address line 0
Address line 2
Selection signal 1
Selection signal 3
Hard disk activity
Ground
Panel PC 870 Computing Unit Equipment Manual
Input/Output
Output
-
Input / output
-
–
Eingang
-
Ausgang
-
Ausgang
-
Eingang
–
Ausgang
-
Eingang
–
Ausgang
–
Ausgang
Input
-
Edition 12/01