65-2670XL-XX-07 M2A-XL Transmitter
Appendix A: Control Button Quick Reference Guide
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Appendix A: Control Button Quick Reference
Guide
The M2A-XL’s control buttons allow access to operational modes, resetting of alarms, and
display of the Information Screen. Table 14 shows which button combinations perform these
functions and which parameters are available for adjustment while in the operational modes.
While in these modes, display prompts showing a “?” require you to respond by pressing either
the UP/YES (for yes) or DOWN/NO (for no) button. To change parameter settings, use the UP/
YES and DOWN/NO buttons to get the desired setting, then press and release the ENTER button
to accept the setting.
Table 14: Control Button Quick Reference Chart
Mode Entered or
Function
Performed
Button
Combination
Adjustable or Viewable Parameters
Alarm Reset
Press and
Release ENTER
n/a
Show Information
Screen
Press and Hold
DOWN/NO
• Input Voltage
• M2A-XL Version/Revision Information
Calibration Mode
Press and Hold
UP/YES for 5
seconds
• Fresh Air Adjust
• Span (or Zero for Oxygen) Adjust with
Calibration Gas
Configuration Mode
Press and Hold
UP/YES &
ENTER for 5
seconds
• Alarm Levels
• Increasing or Decreasing Alarms
• Normally Energized or Normally De-
energized Relays
• Latching or Self-resetting Alarms
• Alarm On Delay
• Alarm Off Delay (if self-resetting)
• Zero Suppression
• Noise Filter
• Calibration Time-out Period
Gas Type Mode
Press and Hold
UP/YES and
DOWN/NO for
5 seconds
Gas Type
Modbus Mode
Press and Hold
DOWN/NO and
ENTER for 5
seconds
• Enable or Disable Modbus
• Slave ID
• Baud Rate
• Parity
• Response Delay