22
D
ISPLAY
C
ONTROLS
Each of these controls can be enabled or disabled using the console interface or the option links as
described later.
Zero Display Reed Switches (4 Digit Display only)
The Display may be zeroed by using the Reed Switch built in to the 4 Digit Display, or by using
the Remote Reed Switch and Cable, supplied separately as an option.
Placing a magnet near the right hand side of the display assembly will operate the ‘Zero’ reed
switch. For the first 4 seconds after connecting the switch, ‘Zero?’ will be shown (as seen below) to
allow the user the chance to abort the operation. Removing the magnet from the vicinity of the
switch before the 4 second time elapses will immediately return the system to normal operation
without affecting the count.
After that and while the switch is operated, the display will flash the message Z0000 as shown
below to confirm that the current count is being held at zero.
After the switch is deactivated, the ‘Z0000’ message persists in a steady state for 3 seconds to
confirm the new state.
Remote Reed Switch:
Operated as above by placing a magnet close to the Reed Switch (999-11-
07-001) at the end of the Cable (999-11-07-003) and observing the Display changes.
Note that it may be necessary to enable the Remote Reed Switch prior to use. This is done within
the RS232 Console Interface using the command, “enable232zero”.
This command enables the “RS232 DATA LOOP BACK ZERO” function. The RS232 data output
from pin 1 (5 way connector) is fed back into the data input pin 2 and a comparison carried out. If
there is no difference between them (which is to be expected), then the Zeroing of the Display
commences.
Scale Swap Reed Switch (4 Digit Display only)
Placing a magnet near the left hand side of the display assembly will operate the ‘Scale’ reed
switch. For the first 4 seconds after connecting the switch, ‘Unsc?’ (or ‘Scld?’ if the system is
unscaled mode) will be shown (as seen below) to allow the user the chance to abort the operation.
Removing the magnet from the vicinity of the switch before the 4 second time elapses will
immediately return the system to normal operation without affecting the count.
After that and while the switch is operated, the display will flash the message ‘Unsc’ (or ‘Scld’ if
the system was in unscaled mode) as shown below to confirm the scale mode will be changed.
After the switch is deactivated, the ‘Unsc’ (or ‘Scld’ if the system was in unscaled mode) message
persists in a steady state for 3 seconds to confirm the new state. In the unscaled operating mode
the count is preceded by ‘u’ in the left hand digit and no sign is displayed.
