Program Discrete Inputs; Table 4-14 Discrete Input Prompts - Honeywell VPR100 User Manual

Programming Function Blocks and Features

4.10 Program Discrete Inputs

Discrete Input function blocks are controlled by the on/off status of the input hardware. The output of the
function block, DIn OS, reflects the status of the associated input hardware. This output DIn OS can be
connected to other function blocks' input parameters to trigger actions such as starting a profile or selecting
a control loop's Setpoint #1 or Setpoint #2, among many other possibilities.
The Program Discrete Input menu item will appear if an optional DI/DO card is installed.
Select a discrete input to program, then program the prompts in Table 4-14. See Table 4-2 for additional
prompts.
Prompt
ACTION STATE NORMAL, INVERT
DELAY TIME Number of seconds
EVENT ENABLE NONE, RISING, FALLING,
BOTH
ATTENTION
To change to 16 DI's and 16 DO's or to 8 DI's and 24 DO's, see Section 9.4.
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Table 4-14 Discrete Input Prompts

Range/Selections
VPR & VRX – User Manual
Definition
Determines whether the input will be normally closed or
normally open when ON(1). To select closed when ON (1),
enter NORMAL (not inverted). To select closed when OFF(0),
enter INVERT (inverted).
When the DI is placed in its ON(1) state, the DI function will
wait for the specified delay time before indicating the ON(1)
condition as an output. If the DI "ON" state changes before
the delay time expires, no ON output will be indicated.
Determines whether changes in DI's status can be recorded
as events in data storage.
NONE - status changes are not stored
RISING - OFF(0)-to-ON(1) changes can be stored
FALLING - ON(1)-to-OFF(0) changes can be stored
BOTH - Both changes can be stored
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