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User Manual
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Modbus Network Settings
Modbus network screen shows when Modbus is selected in wired protocol parameter.
Modbus Network
Parity
None
Network units
SI
Baud rate
19200
COM address
254
Table 7: Modbus Network Parameter Details.
Configuration Parameters Default Value
Significance and Adjustments
Comm Address (Communication Address)
Default Value: 254
Valid address range is set at 1 to 247 and each Modbus device must have a unique ad-
dress. Other values not recommended for Modbus.
Default value of 254 disables Modbus communication for the Controller.
Range: 0 to 254
Network Units (Measurement Units)
Default Value: SI
Network units transmitted over the Modbus network.
Use the Temperature scale parameter to change the display units locally on the Room Control-
ler.
Imperial: Network units shown as Imperial units.
SI: Network units shown as International Metric units.
Choices: Imperial or SI
Baud rate (Modbus Baud Rate)
Default Value: 19200
Automatically detects Modbus baud rate.
Choices: 57600, 38400, 19200, 9600, and 4800.
Parity
Default Value: Even
Determines how the parity bit of the character’s data frame is set to detect any errors in the
sent / receives frame.
Choices: None, Odd and Even
NETWORK SCREENS
Modbus Network Settings
Figure 14: Modbus Network Setting Display.