Principles Of Reference Point Output - Sony MJ700 Bedienungsanleitung

3-4-1. Principles of reference point output

The MJ500, MJ600, and MJ700 detect the one-cycle reference
points from the SIN and COS signals input from the encoder.
These one-cycle reference points are synchronized with the
A/B phase signals that are output and are located at
approximately the 45d, 135d, 225d, and 315d positions as
viewed from the SIN signal of the encoder according to the
setting made at MODE switches 1 and 2 (reference point
position 1 and 2 switches).
The active status of the analog reference point gate signal or
external contact-type reference point gate signal and the
logical product of the one-cycle reference point is output as
the reference point.
The active level of the reference point gate can be changed
by OPTION switch 9 (Z-direction switch). For more
information, see "3-4-3. Setting the polarity of the reference
point gate input signal."
14 (E)
COS signal
SIN signal
MODE1 MODE2
ON ON
Approx. 45d d d d d
OFF ON
Approx. 135d d d d d
ON OFF
Approx. 225d d d d d
OFF OFF
Approx. 315d d d d d
The one-cycle reference point is one of the
four points above and is determined by the
reference point gate logical product.
Reference point
gate signal
Reference
point output
When both mode switches 1 and 2 are on
n
The analog reference point gate signal and external contact-
type reference point gate signal are determined by the positive
logic OR operation or the negative logic AND operation.