Mitsubishi Electric MELSEC iQ-R RD78G4 - Synchronous Encoder Axis Parameters

2 INPUT AXIS MODULE
2.3 Synchronous Encoder Axis
63
2
Synchronous encoder axis parameters
j: Synchronous encoder axis No. - 1
Setting item Setting details Setting value Default
value
Buffer memory address
Axis 1 to axis 16
[Pr.320]
Synchronous encoder
axis type
• Set the synchronous encoder axis
type to be used.
Fetch cycle: Power supply ON
■Set in decimal.
0: Disabled
101 to 116: Synchronous encoder via servo
amplifier (Connectable servo amplifier: Axis 1
to axis 16
*1
)
201: Synchronous encoder via CPU
0 34720+20j
[Pr.321]
Synchronous encoder
axis unit setting
• Set the unit of the synchronous
encoder axis.
• Set the position unit within the range
from  1 to 10
-9
[control unit].
• Set the speed unit within the range
from  1 to 10
-9
[control unit/s or control
unit/min].
Fetch cycle: Power supply ON
■Set in hexadecimal. 0003H 34721+20j
[Pr.322]
Synchronous encoder
axis unit conversion:
Numerator
• Set the numerator to convert the unit
from the encoder pulse of the
synchronous encoder axis into the
synchronous encoder axis unit.
Fetch cycle: Power supply ON
■Set in decimal.
-2147483648 to 2147483647
[Synchronous encoder axis position units
*2
]
1 34722+20j
34723+20j
[Pr.323]
Synchronous encoder
axis unit conversion:
Denominator
• Set the denominator to convert the unit
from the encoder pulse of the
synchronous encoder axis into the
synchronous encoder axis unit.
Fetch cycle: Power supply ON
■Set in decimal.
1 to 2147483647[pulse]
1 34724+20j
34725+20j
[Pr.324]
Synchronous encoder
axis length per cycle
• Set the length per cycle of the
synchronous encoder axis.
Fetch cycle: Power supply ON
■Set in decimal.
1 to 2147483647
[Synchronous encoder axis position units
*2
]
4000 34726+20j
34727+20j
[Pr.325]
Synchronous encoder
axis smoothing time
constant
• Set the time to smooth the input value.
Fetch cycle: Power supply ON
■Set in decimal.
0 to 5000[ms]
0 34728+20j
[Pr.326]
Synchronous encoder
axis phase
compensation
advance time
• Set the time to advance or delay the
phase.
Fetch cycle: Operation cycle
■Set in decimal.
-2147483648 to 2147483647[s]
0 34730+20j
34731+20j
[Pr.327]
Synchronous encoder
axis phase
compensation time
constant
• Set the time constant to affect the
phase compensation.
Fetch cycle: Power supply ON
■Set in decimal.
0 to 65535[ms]
*3
10 34732+20j
[Pr.328]
Synchronous encoder
axis rotation direction
restriction
• Set this parameter to restrict the input
movement amount to one direction.
Fetch cycle: Power supply ON
■Set in decimal.
0: Without rotation direction restriction
1: Enable only for current value increase
direction
2: Enable only for current value decrease
direction
0 34733+20j
[Pr.329]
Resolution of
synchronous encoder
via CPU
• Set the resolution of the synchronous
encoder when the synchronous
encoder axis type is set to
synchronous encoder via CPU.
• If 0 or less is set, the input value of
synchronous encoder via CPU is
processed as 32-bit counter.
Fetch cycle: Power supply ON
■Set in decimal.
-2147483648 to 2147483647[pulse]
0 34734+20j
34735+20j
Control unit
Number of decimal places
for position
Speed time unit
0: second [s], 1: minute [min]
Number of decimal places
for speed
H _ _ _ _
0: mm, 1: inch,
2: degree, 3: pulse
0 to 9
0 to 9