Rice Lake 480 Legend Series Digital Weight Indicator Installation Manual - Manual (Page 53)

Setpoints 49
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.
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) 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, you must activate the BATCHG parameter on the SETPTS menu. This parameter defines
whether a batch sequence is automatic or manual. AUTO sequences repeat continuously, while MANUAL
sequences require a BATSTR signal. The BATSTR signal can be initiated by a digital input or serial command.
For setpoint kinds to be used as batch setpoints, the BATSEQ parameter must also be set to ON. If the setpoint is
defined but the parameter is 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.
BATSTART Starts a batch process.
BATSTOP Stops a batch; any restart starts the batch at the beginning.
BATRESET Resets the batch process so the pointers are aimed at first batching setpoint.
BATPAUSE Pauses a batch, but allows it to restart at the point where it was paused.
Table 8-1. Batch Choice Descriptions
Note
Note