Vaisala HMP228 User Manual
Page 88
HMP228
Appendix 4: RS 485/422 serial port module
M210282en-A
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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 network specifications.
This setting will become valid after next RESET or power off:
>seri 2400 e 7 1 h
2400 E 7 1 HDX
•
Set the transmitter in POLL mode:
>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 aw T= 29.1 'C
•
Disconnect the terminal.
•
Check that the jumpers in connector X4 are in the right places.
X4
X4
X1
X2
•
Remount the RS 485/422 serial module.
•
Close the cover.
•
When all transmitters on the network have been configured, switch
them off.