Hardware Information
7-8
SIMATIC Field PG Manual
A5E00075760-04
COM1 (V.24/TTY)
Serial interface COM1 (AG/V.24/Modem). Pinout:
1
13
14
25
Pin No.
Designation
Description
Input /Output
1
-
Shield
-
2
TxD (D1)
Serial transmit data
Output
3
RxD (D2)
Serial receive data
Input
4
RTS (S2)
Request to send
Output
5
CTS (M2)
Clear to send
Input
6
DSR (M1)
Data set ready
Input
7
GND (E2)
Functional ground
(reference potential)
-
8
DCD (M5)
Data carrier detect
Input
9
+TTY RxD
TTY receive
Input
10 - 17
-
Unassigned
-
18
+TTY TxD
TTY send
Output
19
+20mA
Isolated current source
-
20
DTR (S1)
Data terminal ready
Output
21
-TTY TxD
TTY send
Output
22
RI (M3)
Incoming call
Input
23-25
-
Unassigned
-
Summary of Contents for Simatic Field PG
Page 8: ...Preface viii SIMATIC Field PG Manual A5E00075760 04 ...
Page 12: ...Contents xii SIMATIC Field PG Manual A5E00075760 04 ...
Page 18: ...Important Notes 1 6 SIMATIC Field PG Manual A5E00075760 04 ...
Page 90: ...Error Diagnostics 6 2 SIMATIC Field PG Manual A5E00075760 04 ...
Page 124: ...Technical Specifications B 6 SIMATIC Field PG Manual A5E00075760 04 ...