Honeywell CM4 - Get Unit Status - 0 X31

12 Rev. 2.4 (3/05)
Honeywell Analytics CM4 Protocol Manual
Get Unit Status This command requests the current condition or
0x31 status of the slave. This command allows the
master to inquire about the general operating
condition of the system.
Command packet to instrument:
Command Code (0x31) - 1 byte
Response packet from instrument:
Command Code (0x31) - 1 byte
CM4 Date - 2 bytes
CM4 Time - 2 bytes
General Status - 2 bytes
bit 0: Current Operating mode
0 = Not monitoring
1 = Monitoring
bit 1: Keyboard Lockout state
0 = Disabled
1 = Enabled
bit 2: Key pad status
0 = unlock
1 = locked
bit 3: Chemcassette counter status
0 = Counter disabled
1 = Counter enabled
bit 4: 2mA Fault operation
0 = Feature disabled
1 = Feature enabled
bit 5: Point Lock-ON
0 = No Lock-ON
1 = Lock-ON
bits 6-7: Point Locked (Ignore if bit
5 is 0.)
00 = Point 1
01 = Point 2
10 = Point 3
11 = Point 4
bit 8: Date Format
0 = MM/DD/YY
1 = DD/MM/YY
bits 9-12: Points enable when No
Lock on
0x01 = Point 1 enabled
0x02 = Point 2 enabled
0x04 = Point 3 enabled
0x08 = Point 4 enabled
(continued)