Lighthouse Remote 3014PN, Operating Manual

Page: 71 / 84

MODBUS Register Map v1.44
248083317-1 Rev 4 B-5
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
response. When this register is read, it always returns a zero.
Table B-5 Command Register
Value Action
1 Saves all writable 4xxxx register values to the EEPROM.
2 Reserved for future use.
3 Clears the Data Buffer. Record count is set to zero.
4 Saves the instrument parameters in the 40xxx registers to the
EEPROM. Parameters include Sample Time, Hold Time, Initial
Delay, and Location.
5 Enable Remote Control. Locks out the instrument’s user interface.
Can only change instrument parameters via MODBUS.
6 Enable Local Control. Unlocks the instrument’s user interface.
Instrument changes can be made at the device itself or through
MODBUS.
7 Start local pump, if applicable - perform before 9 below.
8 Stop pump, if applicable - perform after 10 below.
9 Manual Start.
The instrument samples continuously until it receives a Manual
Stop command. Ignores local timing parameters. Sets Sample Time
for data record to equal the time interval between the Manual Start
and Manual Stop command. If applicable to device, does not start
pump.
10 Manual Stop.
Stops sampling. Records counts since Manual Start.
11 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 command is
issued.
12 Instrument Stop. Aborts current sample. Stops pump, if applicable.
Stops data collection.