Both BACnet objects have the following properties:
Setting, long name
Property #, short name
Description
Line termination
4698: LnTrmnt
On board line termination can be switched on (TRUE) / off (FALSE).
Inter-Char-Timeout-Scale
4773: IntFrmTime
Maximum delay between characters within a Modbus frame
Standard timeout depends on configured baud rate and is normally 1.5 x
characters times.
Standard timeout corresponds to 100% and is set as default
Inter-Frame-Time-Scale
4774: IntChrTiout
Minimum delay time between two Modbus frames
Standard wait time depends on configured baud rate and is normally 3.5 x
characters times.
Standard wait time corresponds 100% and is set as default
Stop Bit definition
4775: StopBits
Parity definition
4776: Parity
Baud rate selection
4777: Baud
Baud rates of 9600 and 19200 baud must be supported as per Modbus
standard.
Additional supported baud rates must be tested to ensure full functionality.
Send command
4894: Command
Apply changes of Modbus slave configuration. Controller will automatically
reboot. After restarting, new settings will take effect.
Entry values in BACnet browser tools, e.g. Yabe
The following relationships apply for stop bit, parity and baud rate:
Application
parameter value
BACnet browser entry
Stop bits
1
1
2
2
Parity
No
1
Even
2
Odd
3
Mark
4
Space
5
Baud rate
300
0
600
1
1200
2
2400
3
4800
4
9600
5
19200
6
38400
7
57600
8
76800
9
115200
10
Engineering of communicative devices
Modbus slave
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