RKI Instruments M2 for 12 VDC - Manual (Page 44)

39 M2 Transmitter Operator’s Manual, 12 V DC Operation
Appendix A: Control Button Quick Reference Guide
The M2’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
• M2 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