Datex-Ohmeda CAPNOMAC ULTIMA, Service Manual

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CAPNOMAC ULTIMA
TM
SERVICE MANUAL
12-1
1 2 APPENDICES
A COMPUTER OUTPUT (Serial & Analog I/O Connector)
In general
The output format is a string of three-digit ASCII fields separated by commas.
The first field serves as a string type code field. Exception to this rule are the
message strings which start with a blank followed by an ASCII string. All strings
end with carriage return and linefeed characters.
Serial data strings are sent out once every 10 seconds. A numeric string of
measured parameters and alarms are transmitted for data recording with a
computer. The monitor’s serial output has to be set to NUMERIC MODE in
STARTUP/USER CONFIGURATIONS menu.
The serial communication protocol is:
- transmission rate 1200 b/s
- 8 data bits, no parity
- 1 stop bit
Normal data string starts with BOO, U0l, U03, or U04. Alarm
activation/deactivation string starts with B99, U99, B98, or U98 and
events/status string starts with B97.
Interpretation of Status Code
The 3-digit status code at the end of the serial data string indicates possible
error and alarm states. Each digit must be interpreted separately according to the
Table 12- 1.
When the status code is 000, no status data is transmitted. When it is 100, 200,
700, or 900 no errors or alarms are active.
January 15th, 1997/6