_________________________________________________________________________CONTENTS
VAISALA __________________________________________________________________________III
APPENDIX F MULTIPLE PTB220 BAROMETERS ON RS232C.......................91
APPENDIX G OPTIONAL RS485/422 INTERFACE OF PTB220 BAROMETERS93
APPENDIX H SERIAL INTERFACE COMMANDS .............................................97
Commissioning commands........................................................97
Operating commands ..................................................................97
Maintenance commands .............................................................98
Diagnostic commands ................................................................98
APPENDIX I CHECKSUM ..................................................................................99
APPENDIX J PRESSURE TENDENCY ............................................................101
APPENDIX K ERROR MESSAGES...................................................................102
APPENDIX L SPECIAL EMULATION MODE ...................................................103
PA11A..........................................................................................103
P Mode....................................................................................103
Automode ...............................................................................104
Setra 470 .....................................................................................105
APPENDIX M PRESSURE CONVERSION CHART ..........................................107
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