Mitsubishi FX3U-20SSC-H User Manual page 155

FX -20SSC-H Positioning Block User's Manual
3U
BFM Number
Bit
Number
X-axis Y-axis
b6
b7
b8
b9
b10
BFM BFM
#518 #618
b11
b12
b13
b14
b15
*1. Timing of detection
1) Level detection: activated when the bit is set or cleared.
2) Edge detection: activated at OFF-to-ON transition.
*2. The simultaneous START flag is b10 in the X-axis operation command 1 (BFM #518).
Do not use b10 in the Y-axis operation command 1 (BFM #618).
Note
• Priority of start flag and stop flag
The STOP command has higher priority over the forward / reverse rotation JOGs and the START
command.
• Handling of each flag ON/OFF state
- The 20SSC-H retains stop and start flag ON/OFF states until power OFF.
- The commands with level detection executes/stops at writing ON/OFF.
- For commands with edge detection, create a program so that the bits are always turned OFF upon
completion of ON operations.
(The second and subsequent cycles cannot be performed without turning the bits OFF.)
Setting Item
When this is set, mechanical zero return operation is started.
Mechanical zero
return command
Not available
OFF: An absolute address is used (moves to the specified target
Relative/Absolute
address based on the base position).
address
ON: A relative address is used (moves by a specified amount
specification
of travel from the current address).
Set this to start a positioning operation selected from the
START command
operation patterns.
ON: Starts X and Y positioning operations simultaneously
when a START command for X-axis becomes active.
Simultaneous (includes JOG and zero return operations)
*2
START flag OFF: X and Y positioning operations start individually by their
respective START commands.
(excludes interpolation and XY-table operations)
Set this to disable m codes.
m code OFF
Change Set this to disable an operation speed change command and
commands during target position change command during operations.
operations are
disabled
Speed change Changes the operation speed to the speed preset as a velocity
command during change value during operation.
positioning
operation
Target position Changes the target address to the address preset as a target
change command position change value (address or speed) during operations.
during positioning
operation
Not available
11 Buffer Memory (Parameters & Monitored Data)
Description
→For details on the mechanical zero return,
refer to Section 8.1
-
→For details on the m code, refer to Section 10.9
→For details on the operation speed change,
refer to Subsection 7.6.2
→For details on the target address change,
refer to Subsection 7.6.3
-
11.4 Control Data
11
*1
Default
Detection
Edge
12
-
Level
Edge
13
Level
H0000
Edge
A
Level
Edge
B
Edge
-
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