Vaisala HMP240 User Manual
Page 93
HMP240
M210300en
Appendix 2: RS 485/422 serial port module
91
APPENDIX 2: INSTALLING AND USING THE RS 485/422 SERIAL
PORT MODULE
1.
INSTALLATION ........................................................................................................ 92
2.
OPERATION ............................................................................................................. 93
3.
NETWORK CONFIGURATION.................................................................................. 95
3.1.
Single loop operation................................................................................... 95
3.2.
Dual loop operation ..................................................................................... 97
4.
CHECKING THE SERIAL PORT NETWORK OPERATION ....................................... 99
STOP mode .............................................................................................................. 99
POLL mode ............................................................................................................ 100
RS 485 network settings ....................................................................................... 100
5.
SPECIFICATIONS................................................................................................... 101