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131
9-2
Display Descriptions
Press the RESET switch once after turning on the power. The display shows
a series of dashes until the origin has been established (See
Section 7 Es-
tablishing the Origin
).
X
Y
If the display is dark, check the following.
1.
The 100/200-VAC power supply.
2.
The fuses.
3.
Crossed wiring between the Position Control Unit and External Display.
Check the peripheral connector wiring.
4.
The External Display itself may be malfunctioning if all connections and
power are correct.
Displays the current position for the X and Y axes. When one axis is unused,
the display for that axis will be a series of dashes. There are eight display
digits for each axis; this corresponds to the eight BCD digits in the position
field for all positioning actions.
The current position is displayed in the selected unit (pulse, mm, inch). The
various units have the following ranges.
1.
For pulse: -99,999,999 to +99,999,999. This is the maximum range of
the device in absolute figures.
2.
For millimeters: -99,999.999 to +99,999.999. The number of digits below
the decimal are fixed at three.
3.
For inch: -9,999.9999 to +9,999.9999. The number digits below the deci-
mal are fixed at four.
In other words, the precision remains the full eight digits no matter what units
you use. However, you can go over the permitted range in mm and inch
units; if this occurs, all digits display “E” as shown below.
X
Y
To obtain the number of encoder pulses when you have selected millimeter
or inch, multiply the current position by the pulse rate (selected unit/pulse).
The pulse rate is described in
3-1 Overview
. In essence, the pulse rate is the
actual distance moved by the mechanical system per encoder pulse.
Power ON Operation
1, 2, 3...
Current Position Mode
1, 2, 3...
Display Descriptions
Section 9-2