Welch Allyn LC101 CO2 Module - User Manual - Manual (Page 65)

LC101 CO
2
Module OEM Implementation Manual
Welch Allyn OEM Technologies Confidential Page 65
Appendix C
Error Messages & Recovery
This appendix lists and defines the LC101 Module status codes. Recovery attempts are
suggested if the status indicates a fault condition. The fault conditions are grouped into three
categories.
• Advisories - Non-fatal conditions which do not halt Module operation.
• Soft faults - Conditions which interrupt Module operation, including transmission of
CO
2
waveform and breath data packets, until the fault is cleared. The Module can
accept commands while in the soft fault state.
• Hard faults - Halt Module operation and prevent the Module from accepting
commands. The software reset command (), or a host reset, can be used to
clear hard faults.
Recovery attempts may include the host initiating one of these external resets:
• Software Reset - The host may command a software reset using the
command while the Module is unprotected. After the reset, the Module returns to its
EEPROM default settings.
• Reset - If the host holds the receive data line in a break condition for greater than 10
msec, but less than 500 msec, the microprocessor is forced into reset. After the reset,
the Module returns to its EEPROM default settings and starts up in the standby mode.
The Module can respond to host communication 2 seconds after a reset.