Adjustable Frequency Drive Hardware Set-Up - Danfoss VLT HVAC Basic Drive FC 101 Design Manual

RS-485 Installation and Set...
7.1.3 Adjustable Frequency Drive Hardware
Set-up
Use the terminator dip switch on the main control board
of the adjustable frequency drive to terminate the RS-485
bus.
Figure 7.2 Terminator Switch Factory Setting
The factory setting for the dip switch is OFF.
MG18C522
Design Guide
7.1.4 Adjustable Frequency Drive
Parameter Settings for Modbus
Communication
Define the RS-485 Communication Set-up
Parameter
8-30 Protocol
8-31 Address
8-32 Baud Rate
8-33 Parity / Stop
Bits
8-35 Minimum
Response Delay
8-36 Maximum
Response Delay
8-37 Maximum
Inter-char delay
Table 7.2 Modbus Communication Parameter Settings
Danfoss A/S © Rev. 2014-01-14 All rights reserved.
Function
Select the application protocol to run on
the RS-485 interface.
Set the node address.
NOTICE!
The address range depends on the
protocol selected in 8-30 Protocol
Set the baud rate.
NOTICE!
The default baud rate depends on the
protocol selected in 8-30 Protocol
Set the parity and number of stop bits.
NOTICE!
The default selection depends on the
protocol selected in 8-30 Protocol
Specify a minimum delay time between
receiving a request and transmitting a
response. This function is for overcoming
modem turnaround delays.
Specify a maximum delay time between
transmitting a request and receiving a
response.
If transmission is interrupted, specify a
maximum delay time between two received
bytes to ensure timeout.
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