Siemens M7-400 ユーザーズマニュアル

12-24

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Table 12-7 MSM 478 Parallel Port, Socket X1 (25-Pin Sub D Socket) 

1

/STROBE

Input/output

2

Data 0

Input/output

3

Data 1

Input/output

4

Data 2

Input/output

5

Data 3

Input/output

6

Data 4

Input/output

7

Data 5

Input/output

8

Data 6

Input/output

9

Data 7

Input/output

10

/ACK

Input

11

BUSY

Input

12

PE

Input

13

SLCT

Input

14

/AUTO FEED

Output

15

/ERROR

Input

16

/RESET

Output

17

/SLCT IN

Output

18

GND

–

19

GND

–

20

GND

–

21

GND

–

22

GND

–

23

GND

–

24

GND

–

25

GND

–

Operational ground (GND signal) at the COMa or COMb ports is referenced to
internal ground.

Suitable measures may be required on the process side to avoid ground loops.