MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU - Manual (Page 80)

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3 COMMON PARAMETERS
3) If the duration of motion operation has exceeded the operation cycle, the
operation cycle over flag (M2054) turns ON. Even when "Automatic
setting" is selected, the duration of motion operation may exceed the
operation cycle depending on the control conditions. The actual duration
of motion operation (unit:
μs) is stored in SD522, and the current setting
of operation cycle (unit: μs) is stored in SD523. Monitor these special
registers and adjust the set value of operation cycle so that the actual
duration of motion operation will not exceed the set operation cycle. (A
WDT or other error may occur in the Motion CPU.)
(b) Operation at STOP to RUN
Set the condition in which the "PLC ready" flag (M2000) turns ON. Select
any one of the followings.
1) M2000 is turned on by switching from STOP to RUN.
Condition in which the M2000 turns from OFF to ON
• Change the RUN/STOP switch from STOP to RUN.
• Turn ON the power supply with the RUN/STOP switch set to RUN.
Condition in which the M2000 turns from ON to OFF
• Change the RUN/STOP switch from RUN to STOP.
2) M2000 is turned on by switching from STOP to RUN and setting 1 in the
set register.
(M2000 turns ON when the switch is set to RUN and 1 is set in the
setting register.)
Condition in which the M2000 turns from OFF to ON
• With the RUN/STOP switch set to RUN, set 1 in the setting register
for "PLC ready" flag (D704). (The Motion CPU detects a change from
0 to 1 in the lowest bit in the D704).
Condition in which the M2000 turns from ON to OFF
• With the RUN/STOP switch set to RUN, set 0 in the setting register
for "PLC ready" flag (D704). (The Motion CPU detects a change from
1 to 0 in the lowest bit in the D704).
• Change the RUN/STOP switch from RUN to STOP.
(c) Forced stop
Set the bit device used for executing a forced stop in which all servo-
amplifier axes are stopped immediately in the program.
Either X (PX) or M can be specified. No default value has been set. The set
bit device is designated as contact B and performs the following control in
response to ON/OFF of the device.
• Bit device is turned OFF …Forced stop input is ON (forced stop)
• Bit device is turned ON …..Forced stop input is OFF (forced stop is
released.)
The forced stop input by EMI terminal of Motion CPU module cannot be
invalidated using parameter setting.