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5.6 Interface Specifications

[ 1 ] Interface Connector and Pin Assignment

CU-201

The CU-201 has an RS-232C interface port (Dsub-9P).
RS-232C interface port (Dsub-9P) on the CU-201
Pin No. Signal Functions Signal Input/O utput
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
The input/output voltage threshold for the logical valued signal is listed below.
Logical Value Input Voltage Threshold Output Voltage Threshold
0 3V n 15V 5V min.
1 -15V n -3V -5V max.

CU-221

The CU-221 has a Full-Speed USB 1.1-capable port (Series B receptacle).