Siemens PANEL PC 877 Interface to floppy disk drive, Pin No Abbreviation Meaning

Detailed descriptions 17.1 Motherboard

Interface to floppy disk drive, X26

This interface is designed for connecting a standard floppy drive. The maximum length of the data cable should 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

Abbreviation	Meaning	Input/Output
GND	Ground	-
DENSEL	High density disk selection	Output
GND	Ground	-
-	Not assigned	-
GND	Ground	-
DRAME0	Data rate signal	Output
GND	Ground	-
INDEX_N	Index hole recognition	Input
GND	Ground	-
MOT_N0	Activate motor 0	Output
GND	Ground	-
DS_N1	Drive 1 selection	-
GND	Ground	-
DS_N0	Drive 0 selection	-
GND	Ground	-
MOT_N0	Activate motor 1	Output
GND	Ground	-
DIR_SL_N	Step motor direction	Output
GND	Ground	-
STEP_N	Step motor pulse	-
GND	Ground	-
WR_DAT_N	Write data signal	Output
GND	Ground	-
WR_GAT_N	Enable data signal	Output
GND	Ground	-
TRACK_N0	Track 0 signal	Input
GND	Ground	-
WR_PRT_N	Write protection signal	Input
GND	Ground	-
RD_DAT_N	Read data signal	Input
GND	Ground	-
SIDE_1_N	Page selection	Output
MED_ID1	High density disk recognition	Input
DCHG_N	Disk change display	Input

SIMATIC Panel PC 877	17-21
Operating instructions, Release 07/2006, A5E00877780-01