ApexRp Operators Manual
248083480-1 Rev 3 62
Command Register
The Command Register (40002) is used to make the device perform
an action. The register performs an action when an integer value is
written to it. The action is completed when the device sends a
MODBUS Bit Description response. When this register is read, it
always returns a zero.
Saves all writable 4xxxx register values to the EEPROM.
Clears the Data Buffer. Record count is set to zero.
Saves the instrument parameters in the 40xxx registers to
the EEPROM. Parameters include Sample Time, Hold Time,
Initial Delay, and Location.
Instrument Start (Automatic Counting).
Particle Counters: Uses defined Initial Delay, Hold Time,
Sample Interval and counting mode. Instrument executes
samples and holds until an Instrument Stop command is
issued. For instruments with pumps, this command will start
the pump.
Manifold Controller: Uses defined Manifold Sequence. Stops
counting and changing position when Instrument Stop
Instrument Stop. Aborts current sample. Stops pump, if
applicable. Stops data collection.
Set Real Time Clock. Writes "Data Set" values (from
Registers 40035 & 40036) to the local Real Time Clock. New
Instrument Location Validation Start:
ApexRp: Start blinking Alarm LED blue
Instrument Location Validation Stop
ApexRp: Stop blinking Alarm LED blue
Instrument Data Validation Start
ApexRp: Start sampling with dummy data using current
sampling parameters. Data is also tagged as validation.
Instrument Data Validation Stop
ApexRp: Stop sampling with dummy data using current
sampling parameters. Data is also tagged as validation.
Table A-7 Command Register