Topcon SP-3000P - RS-232 C Communication Specifications; Connector and Pin Layout; Transmission Modes and Formats

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SPECIFICATIONS & PERFORMANCE
RS-232C COMMUNICATION SPECIFICATIONS
Connector type
Dsub-9-pin connector (based on EIA RS-232C)
The connector on the instrument is DE-9S-N (made by Japan Aircraft Electronics).
Input terminal PIN layout
For the 9-pin to 9-pin connection
For the 9-pin to 25-pin connection
Transmission mode
RTS-CTS control TOPCON NEW format control
Code Name SP-3000P side Sender/receiver's side
RD (RXD) Received data 2 2
SD (TXD) Sent data 3 3
ER (DTR) Data Terminal Ready 4 4
SG (GND) Signal Grounding 5 5
DR (DSR) Data Set Ready 6 6
RS (RTS) Request to Send 7 7
CS (STS) Clear to Send 8 8
Code Name SP-3000P side Sender/receiver's side
RD (RXD) Received data 2 2
SD (TXD) Sent data 3 3
ER (DTR) Data Terminal Ready 4 4
SG (GND) Signal Grounding 5 5
DR (DSR) Data Set Ready 6 6
RS (RTS) Request to Send 7 7
CS (CTS) Clear to Send 8 20
Synchronous system Asynchronous Synchronous system Asynchronous
Baud rate 2400/9600bps Baud rate 2400/9600bps
Start bit 1 bit Start bit 1 bit
Stop bit 1 bit Stop bit 2 bit
Data length 8 bit Data length 7 bit
Parity None Parity EVEN
Operating code ASCII code Operating code ASCII code