Vaisala HMP228 User Manual
Page 100
HMP228
Appendix 5: Digital current loop module
M210282en-A
94
Dual loop wiring
•
Set the address of the transmitter, it can be any number between 1 and
99. In this example the address is 22:
>addr 22
Address : 22
•
Set the serial bus settings according to your system. This setting will
become valid after next RESET or power off:
>seri 2400 e 7 1 f
2400 E 7 1 FDX
•
Switch echo on:
>echo on
ECHO : ON
>
•
Change the serial output mode into POLL:
>smode poll
Serial mode : POLL
NOTE 1
The SMODE command must be given last.
NOTE 2
The transmitter outputs no prompt (>) after the SMODE
POLL command and it only reacts to commands which
include its address.
•
Check that the transmitter responds to its address:
>send 22
aw= 0.244 T= 29.1 'C
•
Disconnect the terminal.
•
Remount the digital current loop module.
•
Close the cover.
•
Repeat this setting procedure with each transmitter
•
When all transmitters on the network have been configured, switch
them off.