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CANON Digital Galvano Scanner System GM-1000 Series
Users Manual 1.20
68
Note:
・The analog monitor output is from the D/A converter of the controller.
Since the output range of the D/A converter is from -3 to +3 V, output is repeated by the
magnification setting if it exceeds this range.
・The relationship between encoder pulse and angle differs depending on the galvano motor.
E.g. GM-1010
360° = 1000 pulses × 8,192 divisions = 8,192,000 pulses
1° = 8,192,000 pulses / 360° = 22,756 pulses
At the monitor output position (0.091 V/pulse), the analog monitor output changes:
1° = 22,756 × 0.091 = 2.071 V
When the magnification is 1x, and there is a position change of 0° → 1°, analog output will
change from 0V → 2.071V.
E.g. GM-1015 , GM-1020
360° = 1500 pulses × 8,192 divisions = 12,288,000 pulses
1° = 12,288,000 pulses / 360 = 34,133 pulses
At the monitor output position (0.091 V/pulse), the analog monitor output changes:
1° = 34,133×0.091 = 777 mV
When the magnification is 1x, and there is a position change of 0° → 1°, analog output will
change from 0V → 777 mV.
RS-232C Commands
・ Monitor Output Selection (A2, A8) Command ID = 40
・ Monitor Output Selection (A3, A9) Command ID = 41
・ Monitor Output Selection (A4, A10) Command ID = 42
・ Monitor Magnification Setting (A2, A8) Command ID = 44
・ Monitor Magnification Setting (A3, A9) Command ID = 45
・ Monitor Magnification Setting (A4, A10) Command ID = 46