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Onboard Diagnostics
Unknown Sensor Code
GREEN/OFF Alternating every 500 milliseconds - The MRS-485 doesn’t know the detector type, no MODBUS communications is in
progress and no errors are detected.
To correct this condition:
1.
Disconnect the power line from the MRS-485.
2.
Disconnect the MODBUS line from the MRS-485.
3.
Re-connect the Modbus Line to the MRS-485.
4.
Re-connect the power line to the MRS-485.
Error Codes
Solid RED - The MRS-485 detected an error and no MODBUS communications are in progress.
RED with random bursts of AMBER - The MRS-485 detected an error and AMBER is displayed when data are received or
transmitted over the RS-485 line.
There are a number of conditions which are signalized in this way:
-
Current EEPROM Settings not initialized
-
Current EEPROM Settings have bad checksum
-
Factory EEPROM Settings not initialized
-
Factory EEPROM Settings have bad checksum
-
Unknown Sensor exponent value
-
Watchdog reset
-
Loaded Factory EEPROM Settings in EEPROM Current Settings
-
Latched sensor type different than registered sensor type
-
Unknown sensor type because registration failed
Dip Switch Settings Codes
RED/GREEN Alternating every 200 milliseconds indicates that MRS-485 is in programming mode and waiting for user to enter new
settings using the 8 switches.
RED/OFF alternating every 200 milliseconds indicates that saving new settings failed.
GREEN/OFF alternating every 200 milliseconds indicates that saving new settings passed.
RED/OFF alternating every 500 milliseconds indicates that selected MODBUS address is not an accepted value.
