Lighthouse Handheld 2016 - Device Status

HANDHELD MODBUS Register Map v1.48
248083400-1 Rev 7
C-5
associated with location index values. Thus the name for location =3
would be located at registers 40208-40211. Up to two hundred
locations can be specified.
Register 40199 indicates the number of location names supported on
this device.
Alarm Mode (40037) defines the type of calculation performed to
define an alarm condition. Alarm Mode = 0 corresponds to
conventional threshold alarming; channel bit set if threshold exceeded
for that given channel.
Alarm Parameter (40038) defines additional parameters that may be
needed in defining an alarm mode.
The Command Register (40002) is used to make the device perform an
action. This 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.
Device Status
The Device Status register (40003) displays the current status of the
device.
Table C-4 Device Status
Bit Description
0 RUNNING: Set when a start command is executed
remotely via Command 9 (manual start) or Command 11
(instrument start) or through the user interface. The flag
will remained set until a stop command is executed.
1 SAMPLING: This is set only when the instrument is
actually sampling data that is to be recorded. Caution
must be used in sending a command during this time that
may invalidate current sample.
2 NEW DATA: Set to 1 to indicate that a new data record
has been recorded and it hasn't been read via modbus yet.
When a data record has been read via modbus (registers
30001 to 30999), then this flag is reset to zero.