Denso BHT-604Q - Interface Specifications

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2D Code Handy Terminal
8.1.4 Interface Specifications
IrDA Interface
Specification: IrDA Ver1.3 Low Power physical layer compliant
(Except transmission speed: 460,800 bps)
Input signals: RD
Output signals: SD
Transmission speed: 9,600 / 19,200 / 38,400 / 57,600 / 115,200 / 460,800 /4M bps
Note: 460,800 bps is only possible when communicating from one BHT-600 unit to another or with the
CU-621. 4 Mbps is only possible for communication with the dedicated CU-611 unit. The maximum
transmission speed in all other cases is 115,200 bps.
Connector Interface
Synchronization: Start-stop
Transmission speed: Max. 115,200 bps
Signal level: Conforms to the RS-232C interface
Pin assignment: As shown below.
S
DRD
G
ND
Pin No. Signal Name Function
Signal Input/Output
BHT External device
1
2
3
SG（GND）
SD
RD
Signal ground
Send data
Receive data
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