Status Information - General Monitors IR400 Manual

7.0 Status Information

The error status, which is returned via Common Practice Command #48, is shown in Table and
corresponds to Modbus register 0x02.
Byte Bit
LSB 0
1
2
3
4
5
6
7
MSB 0
1
2
3
4
5
6
7
These bits may be set at power up to indicate an instrument failure. They may also be set by a
failure detected during continuous background diagnostic testing.
Description
IR Close to Low
Negative Drift
IR is Low
IR is High
Brown Wire Short
Low Line Voltage
Failed to Calibrate
Failed to Zero
Gas Check Timeout
Active Lamp Fault
Reference Lamp Fault
Heater Failure
FLASH Checksum Error
RAM Checksum Error
Excess Negative Drift
EEPROM Checksum Error
Table 2: Error Status Information
4
Model IR400 HART
Device Status
Class
Bits Set
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7
Error 4,7