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[ 3 ] Interface Specifications
CU-201
RS-232C interface port (Dsub-9P) on the CU-201
Pin No. Signal Functions
Signal Input/Output
CU-201 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-201.
CU-221
The USB interface on the CU-221 is USB1.1 (Full-speed) compliant with a type-B receptacle.
BHT
CU-201