Dip switches of digital output models, Figure 9, Dip switch settings of digital output models – Vaisala HMW90 User Manual
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User's Guide _______________________________________________________________________
26 ___________________________________________________________________ M211399EN-F
DIP Switches of Digital Output Models
1209-016
Figure 9
DIP Switch Settings of Digital Output Models
DIP
Position
Setting
1
Modbus
Modbus protocol in use.
BACnet
BACnet protocol in use.
2 ... 4
A
B
C
Serial line baud rate.
Off
Off
Off Automatic (default).
Off
Off
On 4800 (not available with BACnet protocol)
Off
On
Off 9600
Off
On
On 19200
On
Off
Off 38400
On
Off
On 57600
On
On
Off 76800
On
On
On 115200
5
Parity Even
Parity even.
Parity None
Parity none.
6
Non-Metric
Use non-metric units on display and service
port. No effect on Modbus and BACnet.
Metric
Use metric units on display and service port.
No effect on Modbus and BACnet.
7
Not used
8
Not used
NOTE
If the serial line baud rate is set to Automatic, the transmitter attempts to
determine the baud rate of the traffic in the RS-485 network. The
transmitter cycles through all baud rate choices, listening for 10 seconds
at each rate. When it detects valid RS-485 traffic, it remains at the
detected baud rate until it is reset or power cycled.
NOTE
The parity setting is only relevant for Modbus protocol, in which it
chooses between 8N2 (parity none) and 8E1 (parity even) formats.
1
ON
2 3 4 5 6 7 8
Modbus
BACnet
Parity Even
A B C
Parity None
Baud
Rate
1 2 3 4 5 6 7 8
HMW95
128 64 32 16 8 4 2 1
Address
(Binary Weighting)
ON
Metric
Non-Metric