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13.8
Read Device Identification
Both stream and individual access to device identification is supported for both BASIC and
REGULAR data types. EXTENDED data types are not supported but may be added in the future.
13.9
Status Flags
Various status flags that have not been discussed earlier, are outlined in the register map in Figure
más atrás, but are also shown below along with a more verbose description of their use.
Element
Bit name
Instrument
Lock screen mode
Control Flags
Instrument
Screen lock mode active
General Flags
Status Flags
Online
Status Flags
Urgent Error
Status Flags
Remote Total Changes
Disabled
Status Flags
Current Loop Alarm
Status Flags
Digital Device 0 .. 3
Status Flags
Hot / Cold probe fault
Status Flags
Signal Loss
Description
This is a Read/Write bit. When read, it indicates whether
the Lock Screen Mode on the unit is on (=1) or off (=0).
To change the Lock Screen Mode, follow the procedure
outline in 13.6.2 but substitute step 3 and 4, first with a
MASK WRITE REGISTER message (command 22 or
0x16) to register address 6 (address 5) and the OR set as
appropriate to set to Lock screen Mode. This is followed
by another MASK WRITE REGISTER message
(command 22 or 0x16) to register address 6 (address 5)
with the AND mask being set to 0xFFFB and the OR
mask being 0x0004. This will initiate an "Update Lock
Screen Mode" command on the unit.
This flag indicates that the unit is reading flow, lock
screen mode is enabled, and the keyboard is locked
against local entry for the moment.
The unit is currently reading flow. This flag is reset when
the unit stops reading flow and enters the configuration
mode.
An urgent error has been reported. This can be useful to
indicate that a serious error has occurred in the unit. For
a list of urgent errors see the UF3300 manual.
A local operator has temporarily barred the MBM from
changing the flow totals.
An alarm condition has been set on the current-loop and
the conditions that trigger it has been met.
N.B. Digital device 0 is currently unimplemented, and so
will always read zero. Digital device 1..3 correspond to
output 1..3. If a flag is set then this output has been
configured as an alarm, and the alarm condition has been
met.
The hot or cold probe is faulty or has been disconnected.
The temperature associated with a faulty or disconnected
probe will -259.3 °C
The ultrasonic signal has been lost. Flow and volume
readings will be frozen.
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