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Appendix A
Appendix A-22 Respironics V200 Ventilator Operator’s Manual REF 1057983 A
RS-232 Communications Protocol
Alarm Status Report
Description Example Range Comments
Command Name ALRM N/A
Number of characters between the start
and stop codes
202 N/A 3 character field
Number of fields between the start and
stop codes
28 N/A 2 character field
Start Code 0x02 N/A ASCII Start
Transmission
Character (STX)
Time of request 13:45◆ N/A 24 hour clock,
hh:mm◆
Date FEB◆23◆1997◆ N/A 12 character field,
MMM◆DD◆YYYY◆
Occlusion Alarm Status or SM Occlusion
Status
NORMAL NORMAL
ALARM◆
RESET◆
Safety Valve Status NORMAL NORMAL
ALARM◆
RESET◆
Low Internal Battery Alarm Status NORMAL NORMAL
ALARM◆
RESET◆
Nonvolatile Memory Failure—Using
Default Settings
NORMAL NORMAL
ALARM◆
RESET◆
Primary Alarm Failure NORMAL NORMAL
ALARM◆
RESET◆
High Inspiratory Pressure Alarm Status NORMAL NORMAL
ALARM◆
RESET◆
Apnea Alarm Status NORMAL NORMAL
ALARM◆
RESET◆
Low Inspiratory Pressure Alarm Status or
Disconnect Alarm Status
NORMAL NORMAL
ALARM◆
RESET◆
Air Source Fault Alarm Status NORMAL NORMAL
ALARM◆
RESET◆
O
2
Valve Stuck Closed Alarm Status NORMAL NORMAL
ALARM◆
RESET◆
Table A-6: Alarm Status Report (Sheet 1 of 3)