Specifications

533
Appendices
*1
Only when the trigger switch function is assigned to either of the magic keys, a user program
returns the ON/OFF state of the switch.
*2
During the direct-connect interface operation, a user program can regard RD signal as CS
signal, provided that the returned value of CS should be specified by
RS/CS control
parameter in the
OPEN "COM:" statement as listed below.
If the direct-connect interface is closed, the BHT returns the value 0.
*3
Lower three bits (bit 2 to bit 0) in this byte represent the contrast level of the LCD in 000 to
111 in binary notation or in 0 to 7 in decimal notation. 0 means the lowest contrast; 7
means the highest.
*4
In System Mode, the message version appears as English or Japanese on the LCD.
*5
If the BHT is initiated by the wakeup function, then this bit goes ON (1).
*6
The BHT returns the re-read prevention enabled time length in units of 100 ms. If the
returned value is zero (0), it means that the re-read prevention is permanently enabled so
that the BHT does not read same bar codes in succession.
*7
An 8-bit binary pattern (bits 7 to 0) on the input ports (which read VRAM) 10h to 1DBFh rep-
resents a basic dot pattern column of the LCD. Bit value 1 means a black dot. The port
number gives the dot column address.
*8
A user program returns the A/D converted value (0 to 255) of the battery voltage level (0 to
7V). The returned value is an instantaneous value when data on the input port is read. The
voltage level varies depending upon the BHT operation and it is not in proportion to the bat-
tery capacity, so use this voltage level as a reference value.
.pnScnMark 6320h 0 Scanning range
marker
(BHT-100Q/BHT-
100QF only)
-0Normal mode
(Driven by the
trigger switch)
-1Fixed to ON
-2Fixed to OFF
OPEN "COM:" statement Returned value of CS (CTS)
OPEN "COM:,,,,0"
OPEN "COM:,,,,1"
OPEN "COM:,,,,2"
OPEN "COM:,,,,3"
OPEN "COM:,,,,4"
Always 1
Always 1
1 if RD signal is High.
1 if RD signal is Low.
Depends upon the RD signal state.
Port No.
Bit
assign-
ment
Monitors the following: