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6.
RS232 Interface
6.1. Pin-out
7.
DSR/DTR Connection
6.2. Signals
Pin Signal DTE
Direction
DCE
Direction Description
1
CD Input Output
Not
connected
2
TxD Output
Input Transmitting
data
3
RxD
Input Output
Receiving
data
4
DSR
Input
Output
Contact manufacturer for set up
5
GND
N/A
N/A
Signal ground
6
DTR
Output
Input
Contact manufacturer for set up
7
CTS
Input Output
Clear
to
send
8
RTS
Output
Input
Request to send (Default)
9
Vcc
Input
Input
Power supply (5VDC, 1.5A Max.)
