Mitsubishi Electronics QD75P, QD75D user manual Software stroke limit check details

12CONTROL SUB FUNCTIONS

[2]Software stroke limit check details

MELSEC-Q

				Check details			Processing when
							an error occurs
	An error shall occur if the current value 1 is outside the software
1)	stroke limit range			2.
	(Check "	Md.20		Current feed value" or "	Md.21	Machine feed value".)	An "axis error" will
							occur (error code:
	An error shall occur if the command address is outside the software
							507, 508)
	stroke limit range.
2)
	(Check "	Da.6	Positioning address/movement amount".)

1Check whether the " Md.20 Current feed value" or " Md.21

" Pr.14 Software stroke limit selection".

Machine feed value" is set in

2Moveable range from the " Pr.12 Software stroke limit upper limit value" to the "

Software stroke limit lower limit value".

Pr.13

[3]Relation between the software stroke limit function and various controls

	Control type			Limit			Processing at check
				check
OPR control	Machine OPR control				–		Check not carried out.
	Fast OPR control				–
		1-axis linear control
		2 to 4-axes axis linear
		interpolation control					Checks 1) and 2) in the previous section [2] are carried
	Position	1-axis fixed-feed control					out.
	control	2 to 4-axes fixed-feed control					For speed control:	The axis decelerates to a stop when
		(interpolation)						it exceeds the software stroke limit
Major		2-axis circular interpolation						range.
		control					For position control:	The axis comes to an immediate
positioning
								stop when it exceeds the software
control	1 to 4-axes speed control
			3, 4					stroke limit range.
	Speed-position switching control
	Position-speed switching control		3, 4
		Current value changing			–		The current value will not be changed if the new current
	Other						value is outside the software stroke limit range.
	control	JUMP instruction, NOP			–		Check not carried out.
		instruction, LOOP to LEND
	JOG operation, Inching operation					5	Check 1) in the previous section [2] is carried out.
							The machine will carry out a deceleration stop when the
Manual							software stroke limit range is exceeded. If the address
control	Manual pulse generator operation					5	falls out of the software stroke limit range, the operation
							can be started only toward the movable range after an
							error reset.

:Check valid

:Check is not made when the current feed value is not updated (Refer to

Pr.21

) at the setting of " current feed

value" in "

Pr.14

Software stroke limit selection" during speed control.

–: Check not carried out (check invalid).

: Valid only when "1:valid" is set in the "

Pr.15

Software stroke limit valid/invalid setting".

3: The value in " Md.20 Current feed value" will differ according to the "

control" setting.

4: When the unit is "degree", check is not made during speed control. 5: When the unit is "degree", check is not carried out.

Pr.21

Current feed value during speed

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