Com2 Port, Db25 Female (Rs232C/Rs422/Rs485) - Brainchild HMI 4.3 User Manual

9 RI

4.5.2 COM2 port, DB25 Female (RS232C/RS422/RS485)

Fig: DB25 female
Pin Signal
number
1 FG
2 TD
3 RD
4 RTS
5 CTS
6 DSR
7 SG
8 DCD
9 -
10 -
11 -
12 TXDA
13 TXDB
14 RTSA
15 RTSB
16 -
17 -
18 CTSA
19 CTSB
20 DTR
21 5 V +
22 RI
23 -
24 RXDA
Ring Indicator
Signal Name Signal
Direction
Frame Ground -
Transmit data Output
Receive data Input
Request to Output
send
Clear to send Input
Data set ready Input
Signal Ground -
Data carrier Output
detect
- -
- -
- -
Transmit data Output
Transmit data Output
Request to Output
send
Request to Output
send
- -
- -
Clear to send Input
Clear to send Input
Data terminal Output
ready
5 V Power Output
supply +
Ring Indicator Input
- -
Receive data Input
Input
Type
-
RS232C
RS232C
RS232C
RS232C
RS232C
5V-/RS232C
RS232C
-
-
-
RS422/RS485
RS422/RS485
RS422
RS422
-
-
RS422
RS422
RS232C
-
RS232C
-
RS422
25