Modbus Rtu Option Card Baud Rate And Parity Settings - Danfoss VLT 5000 Instruction Manual

Modbus RTU The Modbus RTU communication protocol
accesses the internal Danfoss FC protocol
Option Card
within the VLT 6000 to control the drive through
Baud Rate
serial communications. (The Modbus-to-FC
and Parity
interface uses 9600 Baud, 8 Bits, Even Parity,
Settings
and 1 Stop Bit.)
The Modbus RTU option card has a 9-input
DIP switch for setting baud rate and parity (see
figure below). The option card generally uses
9600 baud rate with no parity. Set the switch
positions in accordance with the following
instructions.
• Set input switches 1-3 to ON to select 9600
• Set input switches 4 and 5 to ON to select
MG.10.P2.22 - VLT is a registered Danfoss trademark
baud rate.
no parity.
9600 Baud Rate and No Parity Switch Settings
Baud Rate
300
1200
2400
4800
9600
19200
Parity
None
Odd
Even
Optional Baud Rate and Parity Switch Settings
Switches 6-9 are unassigned reserved
switches. Their setting does not matter.
For Modbus RTU networks operating at other
than 9600 baud and no parity, determine switch
positions from the tables provided below.
1 2 3 4 5 6 7
O
F
F
PCB EDGE
SW1 SW2
OFF OFF
OFF OFF
OFF ON
OFF ON
ON ON
ON OFF
SW4 SW5
ON ON
OFF ON
OFF OFF
NOTE
Set baud rate and parity switch
settings prior to installing
Modbus RTU option card for ease
of access.
8 9 OFF ON
SW3
OFF
ON
OFF
ON
ON
ON
7