Ohmeda Ohio 2000 Series Operation And Maintenance Manual page 56

08/31/94
A-11
LEDs from top to bottom:
6600-0194-000
LEDs. If an LED is illuminated,
the corresponding bit is set to 1 (alarm active). If there is no alarm, the
bit is set to 0. Checking the bits from right to left is the same as checking
the alarm
v switches in degrees centigrade.
This series of bits represents the alarm
I_ and
l.OO"C indicate an open or a
disconnected probe. Any temperature greater than or equal to 50°C is a
shorted probe.
Percentage of nominal power defined as % of heater wattage.
In the servo control mode, this is the patient control temperature set
with the
"__". Each String contains 53 charac-
ters:
Sample data:
Data for discussion (use the following table):
Start of text character (ASCII 2) or CTRL B; indicates a string of data will
follow.
IW means the data is from the Infant Warmer; xxxx is the software
version in the unit, e.g. 0500 for version 5.00.
This is the patient temperature in degrees centigrade. The patient
temperature will always be sent even if it is outside the normal display
range. Temperatures less than or equal to
"<etx>". Data
elements are separated by spaces,
"elf>"; end of text character, "<cr>"; line feed,
"IW"; software version; data string; checksum characters; carriage
return,
"<stx>"; IWS header,
alrmleds
1 start bit, 7 data bits (ASCII), 1 parity bit (odd), 1 stop bit, 1200 baud, full
duplex.
Serial data has the format: start text character,
PC.PC
xx.xx
Reserved for future use.
m This is the mode of operation. P means servo control mode. A means
manual control mode. Always check the mode of operation before
evaluating the patient control temperatures.
PPPPP
Pt.Pt
IWxxxx
<stx>
ccntrl>Q (XON).
Data format
<cntrl>S (XOFF) and resumes when it receives a
Appendix
Data transmission The warmer continuously sends data from the time that it is first pow-
ered up. Note that the warmer serial data transmission can be controlled
through the serial port. Data output stops when the warmer receives a