Onboard Diagnostics; Error Codes; Dip Switch Setting Codes - Macurco Modbus RS-485 User Instructions

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.
13