11 Buffer Memory (Parameters & Monitored Data)
11.4 Control Data
240
FX
3U
-20SSC-H Positioning Block User's Manual
*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.)
BFM
#518
BFM
#618
b6
Mechanical zero
return command
When this is set, mechanical zero return operation is started.
→
For details on the mechanical zero return,
refer to Section 8.1
Edge
H0000
b7
Not available
-
-
b8
Relative/Absolute
address
specification
OFF: An absolute address is used (moves to the specified target
address based on the base position).
ON:
A relative address is used (moves by a specified amount
of travel from the current address).
Level
b9
START command
Set this to start a positioning operation selected from the
operation patterns.
Edge
b10
*2
Simultaneous
START flag
ON:
Starts X and Y positioning operations simultaneously
when a START command for X-axis becomes active.
(includes JOG and zero return operations)
OFF: X and Y positioning operations start individually by their
respective START commands.
(excludes interpolation and XY-table operations)
Level
b11
m code OFF
Set this to disable m codes.
→
For details on the m code, refer to Section 10.9
Edge
b12
Change
commands during
operations are
disabled
Set this to disable an operation speed change command and
target position change command during operations.
Level
b13
Speed change
command during
positioning
operation
Changes the operation speed to the speed preset as a velocity
change value during operation.
→
For details on the operation speed change,
refer to Subsection 7.6.2
Edge
b14
Target position
change command
during positioning
operation
Changes the target address to the address preset as a target
position change value (address or speed) during operations.
→
For details on the target address change,
refer to Subsection 7.6.3
Edge
b15
Not available
-
-
BFM Number
Bit
Number
Setting Item
Description
Detection
*1
Default
X-axis
Y-axis