Denso BHT-8000 - Interface Specifications; 1 ] Interface Connector and Pin Assignment

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5.7 Interface Specifications
[ 1 ] Interface Connector and Pin Assignment
CU-8001/8002
The CU-8001/8002 has an RS-232C interface port (Dsub-9P).
RS-232C Interface Port (Dsub-9P) on the CU-8001/8002
Pin No. Signal Functions
Signal Input/Output
CU-8001/8002 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.
CU-8001
Logical Value Input Voltage Threshold (n) Output Voltage Threshold
0 3V ≤ n ≤ 15V 5V min.
1 -15V ≤ n ≤ -3V -5V max.
CU-8002
Logical Value Input Voltage Threshold (n) Output Voltage Threshold
0 5V ≤ n ≤ 15V 3.2V min.
1 -15V ≤ n ≤ -5V -3.2V max.