MODBUS Register v1.48
248083389-1 Rev
B-7
Device Status
The Device Status register (40003) displays the current status of the
device.
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-6 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.
Table B-7 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.
Summary of Contents for solair 3100
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Page 19: ...Introduction 248083389 1 Rev 2 3 Figure 2 1 SOLAIR Dimensions Side Dimensions Top Dimensions...
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Page 115: ...Operating Counter 248083389 1 Rev 6 49 Figure 6 64 SOLAIR 3100 STATUS Screen...
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