Yaskawa NS300 - Manual (Page 14)

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Response code
loaded to
MW00003
Set/Read
command?
Load response
code to
accumulator
Load zero for
response code to
accumulator
Shift response
code to upper
nibble of byte 0
Byte 0, Upper Nibble Byte 0, Lower Nibble
Byte 1, Upper Nibble Byte 1, Lower Nibble
Register Legend
0 Response Code
0 0
Response Code 0
0 0
Command code
loaded to
NS300_Command
Properly modify
NS300_Command
based on type of
command
Load command
code to lower
nibble of byte 0,
using OR
command
Response Code Command Code
0 0
Store data to
Response_Command_Code
Accumulator_W (DW00026)
Accumulator_W (DW00026)
Accumulator_W (DW00026)
Response Code Command Code
0 0
Response_Command_Code
(DW00012)
Load current
output to bytes 0-1
into accumulator
MOD, ALRST, ESTP SVON, C_STRT
Current Response
Code
Current Command
Code
Accumulator_W (DW00026)
Mask off current
response and
command codes
using AND
MOD, ALRST, ESTP SVON, C_STRT
0 0
Accumulator_W (DW00026)
Perform byte swap on
Response_Command_Code to
get data to byte 1 of register
0 0
Response Code Command Code
Response_Command_Code
(DW00012)
Load response and
command codes to
accumulator using OR
MOD, ALRST, ESTP SVON, C_STRT
Response Code Command Code
Accumulator_W (DW00026)
Load accumulator
to output bytes 0-1
MOD, ALRST, ESTP SVON, C_STRT
Response Code Command Code
NS300_BytesOut_0_1 (OW00030)
No
Yes
Response/Command Code
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Fig 11. Process for Loading Response and Command Codes