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Chapter 14 Common Functions
(f) If all axes set to driver communication are not detected at the start of
communication with the servo amplifier, all axes including independent
axes cannot be operated. (The servo amplifier's LED display remains
"Ab".) Check the operation enabled status with "[Md.52]
Communication between amplifiers axes searching flag". When all
independent axes and axes set to driver communication are
connected, "0: Search end" is set in "[Md.52] Communication between
amplifiers axes searching flag".
Monitor item
Monitor
value
Storage details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
[Md.52]
Communication
between
amplifiers axes
searching flag
The detection status of axis that set
communication between amplifiers is stored.
0: Search end
1: Searching
1434 4234
(2) OPR control, positioning control, manual control, expansion control, and
synchronous control
(a) Do not start the slave axis. The command to servo amplifier is invalid
even if the slave axis is started.
(b) The OPR request flag ([Md.31] Status: b3) of slave axis is always ON.
There is no influence for control of slave axis.
(c) There are some restrictions for data used as the positioning control of
slave axis. The external input signals such as FLS or RLS, and the
parameters such as software stroke limit are invalid.
Refer to this section (4) or (5) for details.
(d) For setting the slave axis as a servo input axis, set "2: Real current
value" or "4: Feedback value" in "[Pr.300] Servo input axis type".
Otherwise, the slave axis does not operate as an input axis.
(e) At the driver communication operation, only the switching to positioning
control mode, speed control mode, and torque control mode are
possible. When the mode is switched to continuous operation to torque
control mode for the master axis, the warning "Control mode switching
not possible" (warning code: 125) will occur, and the control mode is not
switched.
(3) Absolute position system
Set "0: Disabled (incremental system)" in "Absolute position detection
system (PA03)" of servo parameter for slave axis. If "1: Enabled (absolute
position detection system)" is set, the error "OPR data incorrect" (error code:
1201) will occur and the OPR of slave axis cannot be executed.