Power Up Grounding of the Test and Relay Reset Lines

During power up, grounding the reset relay line for approximately 1 second forces the Modbus parameters on both channels to go to their default values of: 19,200 Baud, 8-N-1 format, Unit ID = 1 and HART short ID will reset to 0.

During power up, grounding the test line for approximately 1 second forces the unit to use the dipswitch settings rather than use the settings stored in the flash memory. These settings are for the energized/de-energized relay state, the alarm delay, and the unit sensitivity.