Fisher & Paykel MR730 Manual De Usuario
46
Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
The data record as received should start with an ‘:’ and end with an ‘LF’. Under abnormal operating conditions however
(when there are ‘E’ messages in the display) some or all of the above packets ‘a’ to ‘g’ can be missing. The status
information packet ‘h’ will always be present (as long as the micro is running) and will show the error condition.
(when there are ‘E’ messages in the display) some or all of the above packets ‘a’ to ‘g’ can be missing. The status
information packet ‘h’ will always be present (as long as the micro is running) and will show the error condition.
When there are error messages in the display, bit 6 of the last status byte will be set high indicating a fatal error
condition.
condition.
First Byte
Bit0
Probe disconnect LED
Bit1
Heater Wire disconnect LED
Bit2
Airway Temp Low LED
Bit3
Airway Temp High LED
Bit4
Chamber Temp Low LED
Bit5
Chamber Temp High LED
Bit6
Chamber Temp Button LED
Bit7
Always set high
Second Byte
Bit0
Standby button LED
Bit1
Heater Wire operation LED
Bit2
Remote Shut Down request acknowledge
Bit3
Set Low LED
Bit4
Audio alarm muted
Bit5
External request acknowledge Heater Wire operation
Bit6
External request acknowledge No Heater Wire operation
Bit7
Always set high
Third Byte
Bit0
Heaterplate ON
Bit1
Heater Wire ON
Bit2
Always low
Bit3
Always low
Bit4
Bit5
Model
Bit4
See table
0
0
MR480
Bit5
See table
1
0
MR700
Bit6
Fatal error
0
1
MR720
Bit7
Always set high
1
1
MR730
A5.3
R
EMOTE
S
TANDBY
A constant high input (pin 2 DB9 connector >1.5 V) shuts down the humidifier. Low or open circuit input enables the humidifier. An RSD request signal puts the humidifier into
the standby mode; i.e. No low alarms active, controlled 40.0 °C heaterplate and 15% Heater Wire duty cycle. On removal of an RSD request the humidifier enters the warm up
mode. On the MR730/720 models the standby LED is also turned on (not flashing).
the standby mode; i.e. No low alarms active, controlled 40.0 °C heaterplate and 15% Heater Wire duty cycle. On removal of an RSD request the humidifier enters the warm up
mode. On the MR730/720 models the standby LED is also turned on (not flashing).