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7-6-3. External zero point
This performs the same operation as scale unit zero point input. However, since a photo-coupler is inserted to protect the
external contact point, the response time is slower than that for the scale unit zero point.
Note
The external zero point allows a contact point switch to be used as a zero point. It does not support Sony Precision Technology
Magne-switches.
Input the external zero point.
The input is processed as zero point input only during the
zero point wait status.
7-6-4. External mode input
This functions as the display mode switching input. See “7-5. Mode Switching”.
7-6-5. External print input
This is valid only when the RS-232C unit LZ51-C (option) is connected. See “7-4. Print Key Operations”.
The display is held.
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