Status registers - GMP252

GMP252 User Guide

Document code: M211897EN
Revision: E
Language: English
Product: GMP252
Document type: User guide

Table 1. Modbus status registers (read-only)
Register number	Address	Description	Data format	Notes
2049	0800_hex	Device status	16-bit	0 = Status OK. 1 = Critical error. 2 = Error. 4 = Warning.
2050	0801_hex	CO₂ status	16-bit	0 = Status OK. 2 = CO₂ reading not reliable. Appears during transmitter start-up. 256 = Measurement not ready. Appears during transmitter start-up.
2052	0803_hex	Error code	32-bit field	See table Error codes in register 0803_hex below.

Table 2. Error codes in register 0803_hex
Bitmask	Error message	Severity
0000_hex	Status OK.
0001_hex	Program memory crc critical error.	Critical
0002_hex	Parameter memory crc critical error.	Critical
0010_hex	Low supply voltage error.	Error
0020_hex	Internal 30V error.	Error
0040_hex	Low RX signal error.	Error
0080_hex	Internal 8V error.	Error
0100_hex	RX signal cut error.	Error
1000_hex	Out of measurement range error.	Error
2000_hex	Sensor heater error.	Error
4000_hex	IR temperature error.	Error
8000_hex	FPI slope error.	Error
10000_hex	Internal 2.5V error.	Error
20000_hex	Internal 1.7V error.	Error
40000_hex	Low IR current error.	Error

If several errors are active at the same time, the Modbus error code register contains the sum of currently active error codes.