5
vacon • 22
Programming
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5.3
Modbus RTU parameter descriptions
5.3.1
Modbus RTU Parameters
P5.X.3.1.1
Each slave must have a unique address (from 1 to 247) so that it can be addressed independently
from other nodes.
P5.X.3.1.2
Select the communication speed for the network. The default value is 9600 baud.
P5.X.3.1.3
Users can select the parity type for the network.
Modbus RTU specifies the stop bit configuration shown in table 7. The user can modify this stop bit
configuration manually using parameter P5.X.3.1.4.
Table 7. Parity type
P5.
X
.3.1.4
S
TOP
BITS
User can select the stop bit amount for the Modbus RTU network.
P5.X.3.1.5
Modbus initiates a communication error for a time defined with this parameter. ‘0’ means that no
fault is generated.
P5.X.3.1.6
O
PERATE
MODE
Used to select the operate mode of the Modbus RTU protocol (slave / master). This feature is not
supported in Vacon 100 HVAC. The default Vacon 100 application supports only Slave mode. A
special application is required for Master functionality.
•
0 = Slave
•
1 = Master
P5.8.3.1.7.1-30 IDM
AP
ID
S
See Chapter 6.3.3.4.
Table 8.
Parity type
Stopbits
Even
1
Odd
1
None
2
Summary of Contents for 100 HVAC
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