Siemens SIMATIC HMI OP37/Pro, Руководство по эксплуатации оборудования, Страница: 22 / 74

3-4
OP37/Pro Equipment Manual
Release 7/98
Sub-D socket Pin No. General TTY RS422 RS485
8 1
1 Casing
2
g
RxD–
15 9
3
4
RxD(B)
T D(B)
Data B
15 9
4
5
TxD(B)
RxD(A) 5
6 TxD+
RxD(A)
6
7
TxD+
TxD– 7
8 Casing
TxD–
8
9
Casing
RxD+ 9
10
RxD+
TxD(A) Data A 10
11 +24 V
TxD(A) Data A
12
13
GND (5 V)
13
14
–
+ 5 V 14
15
+ 5 V
GND (24 V) 15 GND (24 V)
Socket Pin No. Signal Description Input/Output
13 1 1 – Strobe Output (open collector) 13 1 1
2
Strobe
+ Data Bit 0
Output (open collector)
Output (TTL level)
25 14
3 + Data Bit 1
p ( )
Output (TTL level)
25 14
4 + Data Bit 2
p ( )
Output (TTL level)
5 + Data Bit 3
p ( )
Output (TTL level)
6
7
+ Data Bit 4
D Bi 5
Output (TTL level)
O (TTL l l) 7
8
+ Data Bit 5
D t Bit 6
Output (TTL level)
O t t (TTL l l) 8
9
+ Data Bit 6
+ D t Bit 7
Output (TTL level)
O t t (TTL l l) 9
10
+ Data Bit 7
Acknowledge
Output (TTL level)
Input (4 7 k pull up) 10
11
– Acknowledge
+ Busy
Input (4.7 k pull up)
Input (4 7 k pull up) 11
12
+ Busy
+ Paper End
Input (4.7 k pull up)
Input (4 7 k pull up) 12
13
+ Paper End
+ Select
Input (4.7 k pull up)
Input (4 7 k pull up) 13
14
+ Select
– Auto Feed
Input (4.7 k pull up)
Output (open collector)
14
15
– Auto Feed
– Error
Output (open collector)
Input (4.7 k pull up) 15
16
– Error
– Init. Printer
Input (4.7 k pull up)
Output (open collector) 16
17
– Init. Printer
– Select Input
Output (open collector)
Output (open collector) 17
18...25
– Select Input
Ground
Output (open collector)
Ground 18...25 Ground Ground
IF3
LPT
Electrical Installation