G4 Multi Channel Weighing Instrument. PM/DT/HE Technical Manual

G4 Multi Channel Weighing InstrumentLevel statusActual status of the Levels (input signal above or below Level) can be read viacommunication and shown at the display (the four first for each scale).The level status includes the influence from hystereses, but it does not show the statusof any digital outputs, connected to the Levels.Setpoint functionGeneralThe 16 Setpoints can be used for fast, accurate and reliable supervision of weightvalues. The Setpoint function is of a one shot type, the function is activated by acommand from the master computer/PLC and deactivatedwhen the weight has reached the Setpoint value.The Setpoints can be connected to any digital output in the instrument for flexibility.The Setpoints can only be controlled by a master computer/PLC via serialcommunication.NOTE: To ensure good operation during the time when a setpoint is activated,the zero-tracking function is not working.Set-upThe selection of the setpoint functions is made in set-up parameters”Setpoint X Source” and ”Setpoint X Scale”. In these set-ups you can selectwhich scale and what signal (weight value) the setpoint shall act on.Connection of a setpoint to an output is made in set-up menu ”Outputs”.OperationThe wanted setpoints (weight levels) must be loaded into the corresponding Modbusregisters.The setpoint(s) are activated by communication. If a setpoint is connected to an output,then corresponding digital output is activated.When the selected weight becomes higher than the setpoint the setpoint function isdeactivated and the corresponding ”Setpoint X cycle done” bit is set. A possibleconnected digital output is also deactivated at the same time.The setpoint function, and possible connected digital outputs, can also be deactivatedby sending command ”Deactivate setpoint X”.NOTE The ”Setpoint X cycle done” for a setpoint is reset when the setpoint value isloaded and when the setpoint is activated.5-11