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Chapter 14 Common Functions
14.8 Virtual servo amplifier function
This function is used to operate as virtual servo amplifier axis that generates only
command virtually by setting "4097, 4128" in servo parameter "
Pr.100 Servo series".
The synchronous control with virtually input command is possible by using the virtual
servo amplifier axis as servo input axis of synchronous control.
Also, it can be used as simulation operation for axes without servo amplifiers.
Setting value of " Pr.97 SSCNET setting" Setting value of " Pr.100 Servo series"
0: SSCNET 4097: Virtual servo amplifier (MR-J3)
1: SSCNET /H 4128: Virtual servo amplifier (MR-J4)
The details shown below explain about the " Virtual servo amplifier function".
[1] Control details
[2] Restrictions
[1] Control details
(1) When "4097, 4128" is set in " Pr.100 Servo series" of flash ROM, it operates
as virtual servo amplifier immediately after power supply ON.
(2) When "0" is set in "
Pr.100 Servo series" of flash ROM, it operates as virtual
servo amplifier by setting "4097, 4128" in "
Pr.100 Servo series" of buffer
memory and by turning the PLC READY signal [Y0] OFF to ON after power
supply ON.
(3) The LED display status remains "Ab." and the servo amplifier is not
recognized even if the actual servo amplifier is connected to axis set as
virtual servo amplifier. The following servo amplifiers of actual servo series
are recognized.
(4) The current feed value and machine feed value of virtual servo amplifier are
as follows.
(a) "0: Invalid" is set in "Absolute position detection system (PA03)".
The both of current feed value and machine feed value are set to "0".
(b) "1: Valid" is set in "Absolute position detection system (PA03)".
OP is established: Address at latest power supply OFF
OP is not established: "0" (Feed current value and machine feed value)
(5) When the virtual servo amplifier is set in the system setting of GX Works2,
"0: Invalid" is set in "Absolute position detection system (PA03)".
Set "1: Valid" to the buffer memory to use as absolute position detection
system.
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