YASKAWA MECHATROLINK-4 JOHB-SMP3, Technical Manual, Page: 21 / 54

9 Main Commands
YASKAWA SIEP C730600 0NA MECHATROLINK-4 Technical Manual 21
PRM_RD Response
Byte Response Description
0 PRM_RD (01 (Hex.)) Command code
1 RWDT Watchdog data
2
CMD_STAT
Refer to page 18 . 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.
8
PARAMETER
Sets the data read in the byte set in the command. The option stores the data read for PARAMETER from lower byte (LSB)
to upper byte (MSB). 0 is stored when the field is not used.
0 is stored in PARAMETER when command error occurs.
9
10
・
・
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Example: Reading C1-01 (200 (Hex.))
Byte Command (Hex.) Response (Hex.)
4 00 00
5 02 02
6 02 02
7 00 00
8 00 Value set to C1-01 (Lower)
9 00 Value set to C1-01 (Upper)
◆
PRM_WR: 02 (Hex.) (Write Parameter Command)
The PRM_WR command writes the internal parameter of the drive for SIZE from the MEMOBUS/Modbus
register number above 100 (Hex.) specified by NO. You can use the command in communication phases 2 and 3.
To save the setting value in the drive, use the CONFIG command. Refer to the drive manual for more information
on MEMOBUS/Modbus register numbers.
PRM_WR Command
Byte Command Description
0 PRM_WR (02 (Hex.)) Command code
1 WDT Watchdog data
2
CMD_CTRL Refer to page 18 .
3
4
NO
MEMOBUS/Modbus register number (Lower)
5 MEMOBUS/Modbus register number (Upper)
6 SIZE
Specify the parameter data size in bytes.
2, 4, 6, and 8 are available.
7 Reserved (0) Not used
8
PARAMETER Specify the lower byte (LSB) before the upper byte (MSB) in the size set in the SIZE.
9
10
・
・
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