Philips V200 Manual Do Utilizador

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REF 1057983 A
Respironics V200 Ventilator Operator’s Manual
Appendix A-1
Appendix A. RS-232 Communications Protocol
The ventilator will allow for the transmission of data from the ventilator via the 
RS-232 communications interface. The ventilator receives commands from 
the remote device and responds with fixed format records.
RS-232 Configuration
The RS-232 communications port will be configured in the following manner 
for all communications functions:
Baud Rate 19,200
Data Bits 8
Parity  None
Stop  Bits  1
Commands 
Transmitted to the 
Ventilator
Commands are transmitted as a series of four ASCII characters followed by a 
carriage return. Valid commands will be stored and response transmissions will 
be sent in the order the corresponding commands were received. Invalid 
commands will be returned in an error message (Table A-7: “Unrecognized 
Commands” on page A-24), in sequ
ence with all other commands.
Transmission of Data 
from the Ventilator
Unless stated otherwise, all fields will be left justified and six (6) characters in 
length. A comma will separate each field. Each data transmission shall be 
terminated with a carriage return.
In the following subparagraphs, a space is designated as “
◆”. When data is 
unavailable, the output field shall contain “----
◆◆” (i.e. four dash characters 
followed by two spaces).
Ventilator Report 
Command and 
Response (VRPT)
When the ventilator receives VRPT followed by a carriage return, it will respond 
by transmitting the information shown in Table A-1: “Ventilation Report”. The 
ventilator responds to the VRPT command by returning a string with a variable 
length. Fields 2 through 4 define the length of the message. The last character 
transmitted is a stop code indicating the end of the message. The second field 
indicates the number of characters between the start and stop codes. The third 
field indicates the number of fields between the start and stop codes. The 
fourth field is the start code, 0x02. The last field in the string is the stop code, 
0x03.