Siemens Simatic 620 - Manual (Page 159)

Hardware Information
7-27
SIMATIC Box PC 620 Manual
A5E00131465-01
Port to the Floppy Disk Drive
This port is intended for the connection of a notebook floppy disk drive. The
maximum connection length of the data cable may not exceed 40cm.
Pin no. Designation Description Input/Output
1 P5V +5V Output
2 INDEX_N Index hole recognition Input
3 P5V +5V Output
4 DS_N0 Drive 0 selection Output
5 P5V +5V Output
6 DCHG_N Disk change display Input
7 n.c. not connected -
8 n.c. not connected -
9 Reserved reserved -
10 MOT_N0 Activate motor 0 Output
11 Reserved reserved -
12 DIR_SL_N Step motor direction Output
13 n.c. not connected -
14 STEP_N Step motor pulse
15 GND Ground -
16 WR_DAT_N Write data signal Output
17 GND Ground -
18 WR_GAT_N Enable data signal Output
19 Reserved reserved -
20 TRACK_N0 Track 0 signal Input
21 Reserved reserved -
22 WR_PRT_N Write protection signal Input
23 GND Ground -
24 RD_DAT_N Read Data signal Input
25 GND Ground -
26 SIDE_1_N Page selection Output
Assignment of the IDE Ports
The primary IDE port is intended for the alternative installation of
2.5” and 3.5” hard disks. 3.5” drives are connected via a 40 pin 2.54mm latching
connector, 2.5” drives via a 44 pin 2mm latching connector. The two connectors
are connected in parallel. The secondary IDE port is intended for the optional
connection of a CD ROM and / or an LS 240 drive. It is adaptable via a 44 pin
2mm latching connector. The maximum connection length of the data cables may
not exceed 40cm.