Yaskawa SI-ET3 - Manual (Page 40)

10 Sub-Commands
40 YASKAWA ELECTRIC SIEP C730600 62B 1000-Series Option SI-ET3 Technical Manual
„ PRM_RD: 01H (Read Parameter Command)
The PRM_RD command is used to read a parameter by specifying the parameter number and the data size. The
command can be used in communication phases 2 and 3. Refer to drive instruction manual for MEMOBUS/Modbus
register numbers.
„ PRM_WR: 02H (Write Parameter Sub-Command)
The PRM_WR command is used to write a parameter by specifying the parameter number, data size, and parameter data.
The command can be used in communication phases 2 and 3. After the parameters are written, the CONFIG command
NOP Response
Byte Response Description
32 NOP (00H) Command code
33
SUB_STAT Refer to SUB_STAT (Sub-Command Status) on page 39 . 34
35
36
Reserved (0) Not used
37
x
x
63
PRM_RD Command
Byte Command Description
32 PRM_RD (01H) Command code
33
SUB_CTRL Refer to SUB_CTRL (Sub-Command Control Field) on page 39 . 34
35
36
NO
MEMOBUS/Modbus register number (Lower)
37 MEMOBUS/Modbus register number (Upper)
38 SIZE Specify the parameter data size in bytes. 2, 4, 6, and 8 are available.
39
Reserved (0) Not used
40
41
42
x
x
63
PRM_RD Response
Byte Response Description
32 PRM_RD (01H) Command code
33
SUB_STAT Refer to SUB_STAT (Sub-Command Status) on page 39 . 34
35
36
NO
The value (Lower) set in the command.
37 The value (Upper) set in the command.
38 SIZE The value set in the command.
39 Reserved (0) 0 is set.
40
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.
41
42
x
x
63