BENSHAW RSi GM2 Series, Instruction Manual

Page: 198 / 282

RS-485 Communication Features
890054-00-00
GM2 Series VFD
188
Example of Modbus-RTU Communication in Use
When the muti-step acceleration time1 (Communication address 0x1246) is changed to
5.0 sec and the Multi-step deceleration time1 (Communication address 0x1247) is
changed to 10.0 sec.
Frame Transmission from Master to Slave (Request)
Items
Station
ID
Function
Starting
Address # of
Register
Byte
Count
Data 1 Data 2 CRC
Hex 0x01 0x10 0x1245 0x0002 0x04 0x0032 0x0064 0x4324
Description
CM.01
Int485
St ID
Preset
Multiple
Register
Starting
Address
-1
(0x1246-
1)
- -
50
(ACC
time
5.0sec)
100
(DEC
time
10.0sec
)
-
Frame Transmission from Slave to Master (Response)
Items
Station
ID
Function
Starting
Address
# of Register CRC
Hex 0x01 0x10 0x1245 0x0002 0x5565
Descriptio
n
CM.01
Int485 St
ID
Preset
Multiple
Register
Starting
Address -
1
(0x1246-
1)
- -