Toshiba AD268 Manuale Utente
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Analog I/O Modules (AD268 / DA264 / TC218)
6. Parameters
PART 1 AD268
6.2 Parameter setting procedure
When you change the AD268 parameters, such as input type settings, gain/offset calibrations
and averaging times, use the following procedure.
and averaging times, use the following procedure.
Step (1)
Write the value "0" into the command register of the AD268 buffer memory (address H8020)
by WRITE instruction.
by WRITE instruction.
H8020
Command register
←
Write 0
Step (2)
Write the parameter data into the buffer memory (addresses H8000 to H801F) by WRITE
instruction. Be sure to write all the 32 words in batch.
instruction. Be sure to write all the 32 words in batch.
H8000
Gain for channel 1
H8001
Gain for channel 2
:
:
H801F
Input type for channel 8
←
Write the parameter data (32 words)
Step (3)
Write the value "1" into the command register (address H8020) by WRITE instruction.
H8020
Command register
←
Write 1
Step (4)
Wait until the data of the response register (address H8021) comes "1". Check the data by
READ instruction.
READ instruction.
H8021
Response register
Check if it comes 1
Step (5)
Write the value "0" into the command register (address H8020) by WRITE instruction.
H8020
Command register
←
Write 0
When the above steps are finished and the module status (addresses H8030 to H8037) shows
no error, the parameter setting procedure is completed. The parameters are effective and they
have been saved in the AD268's EEPROM.
no error, the parameter setting procedure is completed. The parameters are effective and they
have been saved in the AD268's EEPROM.
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