Denso BHT-4000 User Manual page 159

[ 3 ] Interface Specifications
Optical Interface
Synchronization:
Input signals:
Output signals:
Transmission speed:
Direct-connect interface
Synchronization:
Transmission speed:
Signal level:
Pin assignment:
Direct-connect Interface Port (QM connector) on the BHT-4000
Pin No. Signal
1 SD (GND)
2 SD
3 RD
4 RS
5 CS
6 CD
7 ER
8 CHG
Start-stop
RD and CS
SD and RS
19200 bps max.
Start-stop
38400 bps max.
Conforms to RS-232C interface
As shown below.
2 4
1 3
Functions
Ground for signals and charging pin
Send data
Receive data
Request to send
Ready to send
Carrier detect
Data terminal equipment ready
Charging pin
149
6 8
5 7
Signal Input/Output
Appendices
—
→
←
→
←
←
→
←