Honeywell Midas-M User Manual page 94

ModBus
Information R/W
Register
Number
40070 Cell life
remaining
days
40071 ~ Reserved for
40073 future
expansion
Channel 4 Information
40074 Gas Selection R
40075 to Alarm1
40076 threshold
40077 to Alarm2
40078 threshold
40079 Measuring
units
40080 Alarm Status
40081 Fault Status
Midas-M
Data
Data
Size
Type
(Byte)
R s16 2
R 6
u16 2
R/W f32 4
R/W f32 4
R u16 2
R u16 2
R u16 2
Description
Days of cell
remains
bit 0 - 7 : Gas ID bit 8 - 15 : Cell ID
Concentration 0 : N/A 1 : mA 2 : %LEL 3 : % volume 4
units : ppb 5 : ppm 6 : mg/m3 7 ~ 15:
reserved
bit 0 : Alarm 1 active bit 1 : Alarm 2
active
This is the bit bit 0 : Baseline Warning (m10) bit 1 :
order Overrange Warning (m11) bit 2 :
representation Calibration Expire Soon (m20) bit 3 :
of the channel Cell Expire Soon (m21) bit 4 :
fault status. If Temperature Warning (m40) bit 5 :
any fault exists Baseline Fault (F10) bit 6 : Calibration
this will take a Expired (F20) bit 7 : Cell Expired
value in each (F21) bit 8 : Temperature Exceeded
bit. (F40) bit 9 : Cell Failure Refelex (F50)
bit 10 : Cell Failure IR Comm. (F51) bit
11 : Cell EEPROM Read Error (F52)
bit 12 : Cell EEPROM Corrupted
(F53) bit 13 : Cell Failure IR Volt.
(F54) bit 14~15 : : for future expansion
94
Note
User Manual