Chapter 5 Handling the CU-400 (Option)
5.6 Interface Specifications

[ 1 ] Interface Connector and Pin Assignment

CU-401

The CU-401 has an RS-232C interface port (Dsub-9P).
RS-232C interface port (Dsub-9P) on the CU-401
Pin No. Signal Functions Signal Input/Output
CU-401 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 Voltag e Threshold
0 3V n 15V 5V min.
1 -15V n -3V -5V max.

CU-421

The CU-421 has a Full-Speed USB 1.1-capable port (Series B receptacle).
147