2
Conveyor Condition File
2.3 Setting Conveyor Resolution
2-8
165553-1CD
HW1482183
Conveyor Synchronized
Funciton with Shift
Functions
2.3
Setting Conveyor Resolution
The encoder mounted on the conveyor sends the pulse amount to the
DX200 as the conveyor current position data. In order that the
manipulator recognizes this pulse amount as the conveyor travel amount
for its follow-up motion, this pulse amount must be converted into a
distance.
The conveyor travel amount (
μ
m) per 1 pulse to be used for this
conversion is called “RESOLUTION”. The resolution is set in units of
micrometer. For example, when the conveyor resolution is 30
μ
m/pulse,
set “RESOLUTION” to “30.00.”
The setting range is from 0 to 999.99
μ
m/pulse. Since the DX200
internally quadruples every encoder pulse number, the conveyor’s
maximum positional resolution is 3999.96
μ
m/pulse.
As the resolution error is stored as much as the conveyor travel pulse
amount, the setting must be correct. For example, when the resolution is
set 0.01
μ
m/pulse bigger, the follow-up error of 0.1 mm at the point that
the conveyor moves for 1000 pulses.
The conveyor resolution is mentioned in the specification of each
conveyor. However, this value cannot be used because of the following
reason.
For more detailed information on the setting method, refer to section 4.3
“Setting Conveyor Positional Resolution” of the “DX200 OPTIONS
INSTRUCTIONS FOR CONVEYOR SYNCHRONIZED FUNCTION.”
NOTE
As the feedback pulse becomes four times the amount of
the pulse from the conveyor encoder, the conveyor
resolution of the conveyor condition file is 1/4 of the
conveyor resolution mentioned in your conveyor
specifications.
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