Rs-485 Interface Option; Programming Menu 5 (Linear Input) - Extech Instruments 96VFL Series User Manual

process. The Soak begins (timer starts) when the PV=SV. The timer starts (relay switches ON)
and ends when the timer stops (relay switches OFF).
For Event timers, a single action may be required at a certain point in a process. An ON timer
can be used in such cases. Set the timer ('P.tme', in Menu 4) to match the point in the process
where the action is to take place.
When the timer starts (PV=SV), the relay remains OFF but switches ON when the timer stops,
to control the 'event'. Alarm timer relays can be wired in series with control output relays as
shown.

11.5 RS-485 Interface Option

The optional RS-485 PC communications utility allows up to 32 controllers to be addressed
individually by a Windows PC. When communicating, the controller's keypad is inactive and
only the connected PC can control the VFL. Contact Extech for additional information.

12. Programming Menu 5 (Linear Input)

Long press the up and down arrow keys for 5 seconds to access Menu 5. Use the SET button to
scroll. Use the SHIFT (<) key to select a digit for editing and then use the up/down arrows to
change the digit. Use the SET button to continue scrolling to the normal operating screen
when done.
Display Definition
Linear input
low display
Linear input
high display
FIGURE 11.1 - ALARM OUTPUT WIRED TO CONTROL OUTPUT
Description
Low end of the display range
for an analog (linear) input.
High end of the display
range for an analog (linear)
input.
Range
-1999 ~ 9999 (-199.9 ~ 999.9)
-1999 ~ 9999 (-199.9 ~ 999.9)
VFL Series User Manual v2.0 10/20
30
Default
0.0
100.0