26 Rev. 2.4 (3/05)
Honeywell Analytics CM4 Protocol Manual
Get Filter Life This command returns the user’s settings for total
0x44 lter lifetime. Lifetime is set by the user to indicate
how often the lters should be changed.
A maintenance fault will be issued when the lters
are this old. The valid range is 30 to 365 days.
Zero lifetime means a lter maintenance.
Command Packet to slave:
Command code (0x44) - 1 byte
Response from slave:
Command code (0x44) - 1 byte
CM4 date - 2 bytes
CM4 time - 2 bytes
Internal lter life - 2 bytes
External lter life - 2 bytes
Status - 1 byte (alway
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