Honeywell CM4 - Get Current Point Status - 0 X37

19 Rev. 2.4 (3/05)
Honeywell Analytics CM4 Protocol Manual
Get Current This command queries an individual point for its current
Point Status status.
0x37
Command packet to instrument:
Command Code (0x37) - 1 byte
Point # - 1 byte
bits 0-1: Point #
00 = Point 1
01 = Point 2
10 = Point 3
11 = Point 4
bits 2-7: Undened
Response Packet from instrument:
Command Code (0x37) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
(If point is Disabled/Invalid/Locked out,
ll with zeroes)
MDA Gas Abbr. - 6 bytes (not null terminated)
Format Code - 1 byte
Flow Rate - 2 bytes (current ow)
TWA Start Date - 2 bytes
TWA Start Time - 2 bytes
TWA End Date -2 bytes
TWA End Time - 2 bytes
TWA Conc. - 2 bytes
Last Conc. - 2 bytes (last reported conc.)
Alarm Status - 1 byte (0 none, 1 or 2 level)
(Fill for all conditions)
Status - 1 byte
0x00 = Data valid
0x01 = Point Disabled (no data lled)
0x02 = Point Locked Out (no data lled)
0x04 = No TWA calculated
0x08 = No concentration available
0x10 = Alarm Simulation mode active
0xff = Invalid data