Denso BHT-300B Specifications Page 166

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5.7 Interface Specifications
[ 1 ] Interface Connector and Pin Assignment
CU-301
The CU-301 has an RS-232C interface port (Dsub-9P).
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
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-321
The CU-321 has a Full-Speed USB 1.1-capable port (Series "B" receptacle).
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