Specifications
Chapter 8. Files
141
8.4 Communications Device
8.4.1 Hardware Required for Data Communications
The following hardware is required for communications between the BHT and the host com-
puter:
• Optical communications unit (CU) and its interface cable
or
• Direct-connect interface cable
For the communications specifications, refer to the BHT User's Manual.
Using Ir-Transfer Utility E allows the BHT to directly communicate with the IR port-integrated
host computer or an external IR transceiver. For details about IR port-integrated computers
and external IR transceivers available, refer to the "Ir-Transfer Utility E Guide."
8.4.2 Programming for Data Communications
Setting the Communications Parameters
Use the OPEN "COM:" statement to set the communications parameters.
■
For IrDA interface
Parameters other than the transmission speed are fixed (Parity = None, Character length = 8
bits, Stop bit length = 1 bit), since the physical layer of the IrDA interface complies with the
IrDA-SIR 1.0.
■
For direct-connect interface
* The parity, character length, and stop bit length are fixed to none, 8 bits, and 1 bit, respec-
tively, if the BHT-Ir protocol is selected.
Communications Parameters Effective Setting Default
Transmission speed (bps) 115200, 57600, 38400, 19200, 9600, or 2400 9600
Communications Parameters Effective Setting Default
Transmission speed (bps) 115200, 57600, 38400, 19200, 9600, 4800, 2400,
1200, 600, or 300
9600
Parity* None, even, or odd None
Character length* 7 or 8 bits 8 bits
Stop bit length* 1 or 2 bits 1 bit