Denso Power Net Terminal BHT-7500 Especificaciones descargar pdf (Pagina 502)

493

Appendices

BHT-BASIC represents the bit order by the exponent of each binary digit in the byte. For

example, bit 0 means LSB; bit 7 means MSB.

Only when the trigger switch function is assigned to any of the magic keys, a user program

returns the ON/OFF state of the switch.

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-6000/BHT-6500 returns the value 0.

Lower four bits (bit 3 to bit 0) in this byte represent the contrast level of the LCD in 0000 to

1011 in binary notation or in 0 to 11 in decimal notation. 0 means the lowest contrast; 11

means the highest.

The LCD contrast, message version (English/Japanese), system status indication, and

VRAM should not be monitored by using a

WAIT statement. These status may not change

while a user program monitors them by this statement. The

WAIT statement used for this

purpose may cause the program to enter an infinite loop.

In System Mode, the message version appears as English or Japanese on the LCD.

If the BHT-6000/BHT-6500 is initiated by the wakeup function, this bit goes ON (1).

The BHT-6000/BHT-6500 can display the system status on the bottom line of the LCD. If

the system status is displayed, the BHT-6000/BHT-6500 returns the value 1; if not, it

returns the value 0. For the system status indication, refer to Chapter 7, Subsection 7.1.7.

The BHT-6000/BHT-6500 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-6000/BHT-6500 does not read same bar codes in succession.

*10

An 8-bit binary pattern (bits 7 to 0) on the input ports 10h to 24Fh (which read VRAM) 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.

*11

A user program returns the A/D converted value (0 to 255) of the battery voltage level (0 to

5V in the BHT-6000 and 0 to 3.5V in the BHT-6500). The returned value is an instanta-

neous value when data on the input port is read. The voltage level varies depending upon

the BHT-6000/BHT-6500 operation and it is not in proportion to the battery capacity, so use

this voltage level as a reference value.

*12

Supported by the BHT-6500 only.

*13

A user program returns the communications protocol type used for file transmission with

the

XFILE statement. For details about the communications protocol, refer to the "BHT-

6000 User’s Manual" or "BHT-6500 User’s Manual."

OPEN "COM:"

state-

ment

Returned value of CS (CTS)

OPEN "COM:,,,,0"

OPEN "COM:,,,,1"

OPEN "COM:,,,,2"

OPEN "COM:,,,,3"

OPEN "COM:,,,,4"

Always 1

1 if RD signal is High.

1 if RD signal is Low.

Depends upon the RD signal state.

1 2 ... 497 498 499 500 501 502 503 504 505 506 507 ... 559 560

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