Specifications

Appendices
[ 3 ] Interface Specifications
CU-301
RS-232C Interface Port (Dsub-9P) on the CU-301
Pin No. Signal Functions
Signal Input/Output
CU-301 External device
2 RD Receive data ←
3 SD Send data →
4 ER Data terminal equipment ready →
5 SG Signal ground ―
6 DR Data set ready ―
7 RS Request to send ―
8 CS Ready to send ―
Shown below is a diagram of the internal connection in the CU-301.
CU-301
BHT-300
161