Virtual Servo Amplifier Function - Mitsubishi Electric RD77MS2 User Manual

9.7

Virtual Servo Amplifier Function

This function is used to operate as virtual servo amplifier axis that generates only command virtually by setting "00000FFFH,
00001FFFH" in servo parameter "[Pr.100] Connected device". 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"
0: SSCNET
1: SSCNET/H
Control details
• When "00000FFFH, 00001FFFH" is set in "[Pr.100] Connected device" set in the flash ROM, it operates as virtual servo
amplifier immediately after power supply ON.
• When "00000000H" is set in "[Pr.100] Connected device" set in the flash ROM, it operates as virtual servo amplifier by
setting "00000FFFH, 00001FFFH" in "[Pr.100] Connected device" of buffer memory and by turning the PLC READY signal
[Y0] OFF to ON after power supply ON.
• Do not connect the actual servo amplifier to axis set as virtual servo amplifier. If the servo amplifier is connected, the LED
display status remains "Ab." and the servo amplifier is not recognized. The following servo amplifiers cannot be connected
until the end station.
• The current feed value and machine feed value of virtual servo amplifier are as follows.
• When "0: Disabled (incremental system)" is set in "Absolute position detection system (PA03)", the both of current feed value and machine feed value are set
to "0".
• When "1: Enabled (absolute position detection system)" is set in "Absolute position detection system (PA03)", the address at the latest power supply OFF is
set if the home position has been established. If the home position has not been established, the both of current feed value and machine feed value are set
to "0".
• When the virtual servo amplifier is set in the system setting of the engineering tool, "0: Disabled (incremental system)" is set
in "Absolute position detection system (PA03)". Set "1: Enabled (absolute position detection system)" to the buffer memory
to use as absolute position system.
Do not make to operate by switching between the actual servo amplifier and virtual servo amplifier. When a
value except "00000000H" is set in "[Pr.100] Connected device" set in the flash ROM, the connected device is
not changed even if the "[Pr.100] Connected device" of buffer memory is changed after power supply ON and
then the PLC READY signal [Y0] is turned OFF to ON. To change the connected device, write to the flash
ROM and turn the power ON again or reset the CPU module.
Setting value of "[Pr.100] Connected device"
00000FFFH: MR-J3(W)-B (Virtual servo amplifier)
00001FFFH: MR-J4(W)-B(-RJ) (Virtual servo amplifier)
9 COMMON FUNCTIONS
9.7 Virtual Servo Amplifier Function
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