Siemens SIMATIC 627B Operating Instructions Manual page 164

Detailed descriptions
16.1 Motherboard
Pin no.
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
41
Pin assignment of the equipment fan, X128
Pin no.
1
2
3
162
Short description Meaning
D3 Data signal D3
D13 Data signal D13
D2 Data signal D2
D14 Data signal D14
D1 Data signal D1
D15 Data signal D15
D0 Data signal D0
DREQ DMA request
GND Ground
IOR_N Read signal
IOW_N Write signal
GND Ground
IORDY Ready signal
DACK_N DMA acknowledgment
IRQ15 Interrupt signal
AD_1 Address1
AD_0 Address 0
AD_2 Address 2
CS_N Chip select signal
HDACT_N Activity
CS1_N Chip select 1
CSEL Chip select signal
GND Ground
P5V +5 V voltage supply
P5V +5 V voltage supply
P5V +5 V voltage supply
P5V +5 V voltage supply
Short description Meaning
GND Ground
+12 V Switched voltage supply
CPU FAN_CLK Clock signal
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
Input
-
-
-
Output
Output
Output
Output
Input / output
-
Output
Input
SIMATIC Box PC 627B
Operating Instructions, 06/2008, A5E00927393-02