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YASKAWA
SIEP C730600 88F MECHATROLINK-III Technical Manual
NOP Response
Byte
Response
Description
0
NOP (00 (Hex.))
Command code
1
RWDT
Watchdog data
2
CMD_STAT
Refer to page
3
4
Reserved (0)
Not used
5
・
・
31
◆
PRM_RD: 01 (Hex.) (Read Parameter Command)
The PRM_RD command specifies the parameter number and the data size to read a parameter. The command can
be used in communication phases 2 and 3. Refer to the drive manual for more information on MEMOBUS/
Modbus register numbers.
PRM_RD Command
Byte
Command
Description
0
PRM_RD (01 (Hex.))
Command code
1
WDT
Watchdog data
2
CMD_CTRL
Refer to page
3
4
NO
MEMOBUS/Modbus register number (Lower)
5
MEMOBUS/Modbus register number (Upper)
6
SIZE
Data size to read [units: byte] 2, 4, 6, and 8 are available.
7
Reserved (0)
Not used
8
9
10
・
・
31
PRM_RD Response
Byte
Response
Description
0
PRM_RD (01 (Hex.))
Command code
1
RWDT
Watchdog data
2
CMD_STAT
Refer to page
. If the SIZE data is invalid or MEMOBUS/Modbus register number does not exist,
“
9
”
is set for CMD_
ALM.
3
4
NO
The value (Lower) set in the command.
5
The value (Upper) set in the command.
6
SIZE
The SIZE is the same as the register number set in MEMOBUS/Modbus transfers.
7
Reserved (0)
0 is set.