Rice Lake Legend 480-2A, Technical Manual

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Batch and Continuous Setpoints 59
8.0 Setpoints
The 480 indicator provides eight configurable setpoints for control of both indicator and external equipment
functions. Setpoints can be configured to perform actions or functions based on specified parameter conditions.
Parameters associated with various setpoint kinds can, for example, be configured to perform functions (print, tare,
accumulate), to change the state of a digital output controlling indicator or external equipment functions, or to
make conditional decisions.
Weight-based setpoints are tripped by values specified in primary units only.
Firmware versions 1.00 and 1.01 require having a relay board installed for the setpoints to operate.
8.1 Batch and Continuous Setpoints
480 setpoints can be either continuous or batch.
Continuous setpoints
are free-running; the indicator constantly monitors the condition of free-running setpoints at
each A/D update. The specified setpoint action or function is performed when the designated setpoint parameter
conditions are met. A digital output or function assigned to a free-running setpoint continuously changes state,
becoming active or inactive, as defined by the setpoint parameters.
Batch setpoint (BATSEQ = ON)
is a digital output associated with a batch setpoint is active until the setpoint condition
is met. Then it is latched for the remainder of the batch sequence.
To use batch setpoints, set the batching (BATCHG) parameter on the setpoints (SETPTS) menu. This parameter
defines whether a batch sequence is automatic or manual. AUTO sequences repeat continuously after receiving a
single batch start signal, while MANUAL sequences only run through once for each Batch Start signal. The batch
start signal can be initiated by a digital input (set to BATSTR), or an EDP command (BATSTART).
For a setpoint to be used as part of a batch sequence, its batch sequence (BATSEQ) parameter must be set to ON. If
a setpoint is defined and enabled, but its Batch Sequence parameter is set to OFF, the setpoint operates as a
continuous setpoint even during batch sequences.
In applications that contain both batch setpoint routines and continuous setpoints, it is good practice to keep
continuous setpoints separate from the batch sequence.
Do not assign them the same digital output.
Note
Important
Note