Siemens Climatix S300 HRV Application Manual page 155

Setting, long name Property #, short name
Line termination 4698: LnTrmnt
Inter-Char-Timeout-Scale 4773: IntFrmTime
Inter-Frame-Time-Scale 4774: IntChrTiout
Stop Bit definition 4775: StopBits
Parity definition 4776: Parity
Baud rate selection 4777: Baud
Send command 4894: Command
A6V10733786_en_c
Both BACnet objects have the following properties:
Description
On board line termination can be switched on (TRUE) / off (FALSE).
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
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
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.
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 BACnet browser entry
parameter value
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
6
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