Toshiba LF620 Instruction Manual

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1276 F 8 A 0 9 2 710.6 Remote Zero AdjustmentOn-stream zero adjustment in a zero flow rate condition can be started with an external signal.To do this, set DI as a zero adjustment start signal. See 8.2.19, “Digital I/O”[Signal Input Timing]The start signal must be set to H level first, then it must go to L level after the passage of morethan 10 seconds but not more than 20 seconds, as shown above.If the signal does not go to L level within this specified period, it will be ignored.10.7 Remote Selection of Fixed Value OutputA user-specified 4-20 mA output and pulse output can be selected with a DI signal.Proceed as follows to use this function:Fixed-value setting Set the fixed-value for current output and for pulse output. See 8.2.27, “Fixed-ValueOutput.” Set the fixed-value output enable/disable status to “OFF.”If the pulse output is not used, fixed-value setting for pulse output is not needed.DI function setting Set DI to use as a fixed-value output control signal. See 8.2.19, “Digital Input.”Control signal input conditions:Control signal input level 4 –20 mA and pulse outputL level Outputs the measured value.H level Outputs the fixed-value.10 seconds20 secondsH levelL levelZero adjustmentstart signal Zero adjustment start