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8.4.3 Overview of Communications Protocols
The BHT supports two communications protocols—BHT-protocol and BHT-Ir protocol for file
transmission. Using the
XFILE
statement, the BHT may upload or download a file according
to either of these protocols.
[ 1 ] BHT-protocol
This protocol may be used also in System Mode.
For the communications specifications of the BHT-protocol, refer to the BHT User's Manual.
■
Primary station and secondary station
The primary station and the secondary station should be defined as below.
• When uploading data files
Primary station:
BHT
Secondary station:
Host computer
• When downloading data files
Primary station:
Host computer
Secondary station:
BHT
■
Protocol functions
In the BHT-protocol, using the following protocol functions may modify a transmission
header or terminator in a send data:
For a header:
SOH$
or
STX$
For a terminator:
ETX$
■
Field length that the BHT-protocol can handle
When the BHT transmits files according to the BHT-protocol, each field length should
be a maximum of 254 bytes.
In file transmission, the host computer should also support the same field length as the
BHT. The MS-DOS–based Transfer Utility supports the field length of up to 99 bytes;
the Windows-based Transfer Utility supports up to 254 bytes.
Содержание BHT-BASIC 100 SERIES
Страница 1: ......
Страница 161: ...153 Chapter 10 Sleep Function CONTENTS 10 1 Sleep Function 154...
Страница 163: ...155 Chapter 11 Resume Function CONTENTS 11 1 Resume Function 156...
Страница 173: ...165 Chapter 13 Backlight Function CONTENTS 13 1 Backlight Function 166...
Страница 192: ...Chapter 14 Statement Reference 184 Example OPEN master Dat AS 1 FIELD 1 20 AS bar 10 AS ky CLFILE 1 CLOSE 1...
Страница 249: ...241 Example CLOSE IF kyIn Y THEN KILL Master Dat END IF Reference Statements CLFILE...
Страница 349: ...341 Run time errors Error code Meaning 05h Parameter out of the range checktype is out of the range...
Страница 383: ...375 Run time errors Reference Error code Meaning 05h Parameter out of the range Functions LEFT LEN and RIGHT...