Fuji Electric ALPHA5 Smart User Manual page 502

CHAPTER 13 RS-485 COMMUNICATIONS
(3) Message examples
Shows a message example to write in immediate speed, immediate acceleration time and
communication CONT signal, and read out feedback speed, effective torque, and motor current.
The write in start address is 6000H, and the read out start address is 6008H.
First, set parameter Nos. for the free assignment of addresses for parameters PA3_41 to PA3_44.
After setting, reboot to enable the settings.
PA3_41: 007993292
PA3_42: 00000000 (default)
PA3_43: 00040500
PA3_44: Set 00000000 (default)
<Query example>
Information
13
13-14
Modbus RTU Communications
1 byte
Station No.
FC 1 byte
Read out start
2 bytes
address
2 bytes
No. of registers
Write in start
2 bytes
address
2 bytes
No. of registers
No. of data bytes 1 byte
Data 1 4 byte
Data 2 4 byte
Data 3 4 byte
16 bits
CRC check
(2 bytes)
・
When the amplifier station no. is "1".
01
17
60 ･･･
Specify the read out first address.
08
00 ･･･
Specify 0006h as the number of data 3×2.
06
60 ･･･
Specify the write in first address.
00
00 ･･･ Specify 0006h as the number of data 3×2.
06
0C ･･･ Specify 3×4 = 0Ch.
00 ･･･ Specify immediate speed: 186A0h (1000
r/min).
01
86
A0
00 ･･･
Specify immediate acceleration time: 3E8h
00 (100 ms).
03
E8
･･･
00 Specify communication CONT signal: servo
ON and FWD.
00
00
03
CC
17