RS-232 Interface
RS-232 Controller
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
R1
Description
Baud rate
Data bits
Parity
Stop bits
Hardware flow control
Important
When sending RS=232 commands, a carriage return (0x0d) and a line feed
(0x0a) must be included and the end of the command.
RS-232 Interface
5
4
3
6
7
1
2
3
4
5
6
7
8
9
Only TXD, RXD, and GND pins are used.
RS-232 Settings
Setting
115200
8
None
1
None
page | 80
2
1
8
9
Switcher
1
2
3
4
5
6
7
8
9
DE-9
DA-15
DCD
RXD
TXD
DTR
DB-25
GND
DSR
RTS
CTS
R1
DC-37
DD-50