Honeywell VC4 User Manual page 142

Maintenance Status
0x01 = low flow point 1
0x02 = low flow point 2
0x04 = low flow point 3
0x08 = low flow point 4
0x10 = low Chemcassette™ tape
0x20 = Maint. Relay
0x40 = Instr. Fault Relay
Get Idle Time - 0x32
This command inquires about how long the unit can be left out of analysis before setting an
Instrument Fault. Idle time is used to notify operators that the unit is not monitoring. An idle
time of 0 disables this option.
Command packet to instrument:
Command Code (0x32) - 1 byte
Response packet from instrument:
Command Code (0x32) - 1 byte
VC4™ Date - 2 bytes
VC4™ Time - 2 bytes
Idle Time - 1 byte (0 disabled, 1-45 min)
Status - 1 byte
0x00 = No errors in reading
0xff = Error in reading
Get Date & Time - 0x33
This command retrieves the current date and time from the unit.
Command packet to instrument:
Command Code (0x33) - 1 byte
Response packet from instrument:
VC4™ Date - 2 bytes
VC4™ Time - 2 bytes
Status - 1 byte
0x00 = Date and Time READ
0xff = Read problem
VC4™ 142 User Manual