Yaskawa MotionWorks+ Windows Software - Manual (Page 29)

MotionWorks+™ The Project Explorer
23
External Encoder
When external encoder is selected, the following properties appear in the properties
window.
These properties are effective for both real and virtual encoders. A virtual encoder is
useful for simulating a machine or creating a time based cam profile. The system
properties for External encoder apply for either mode, making the user units the same.
The virtual encoder is activated by setting the system variable sExternalMode to “1”.
Note: When right clicking on this module, the properties will be sent to the controller,
but only to RAM. Compile & Download is required to retain values after power cycle.
Enabled: If Enabled is “True”, the MP940 expects an encoder to be con-
nected (i.e., an alarm is set if no encoder is connected). If a vir-
tual encoder is used, set enabled=false, or an A9F alarm will
result.
Feed Constant: The number in user units that the load travels for each revolu-
tion of the final output shaft of the mechanical system.
Gear Box Input: If a mechanical gear box is used, enter the value which corre-
sponds to the number of times the input shaft rotates for the
number of times the output shaft rotates. These are integer val-
ues. If a 10:1 gear box is used, enter “10” for the gear box
input.
Property Default Minimum Maximum Detail
Enabled False False True Setting
Feed Constant 1 0.001 8338608 Constant
Gear Box Input 1 1 32767 Numerator
Gear Box Output 1 1 32767 Denominator
Machine Cycle 1 .001 2147483647 Modulus
Movement Type Rotary Linear Rotary Setting
Pulse Type Quadrature Pulse & Direction Quadrature Setting
Resolution 2048 8 2147483647 Counts
User Units Degrees N/A N/A —
Final Output Shaft Detail Feed Constant
Ball screw 6mm pitch 6
Conveyor belt roller = 4in diameter 4 x
π
Belt and pulley last pulley = 10in diameter 10 x
π