User`s manual

5 - 16
5
Block data read
When this relay is ON, the 64-byte block data in this module is read to the "Data storage area at
block data read" register.
• The block No. of the read destination is set at the "Block data block No." register.
• The BD.REQ signal relay turns OFF during reading of block data.
• If this relay turns ON when this module is not busy (i.e. "Busy flag" is OFF), reading of block data
is executed once every two scans for the duration that this flag is ON.
Block data save
When this relay changes state from OFF to ON, all block data in RAM on this unit is saved to flash
ROM (called "FROM" in some places in this manual) that is used for backing up block data.
• After writing the block data, be sure to save the data by this relay. If the power is turned ON and
the initial start is performed without saving newly written block data, flash ROM->RAM transfer is
performed, and the new block data that was written to this module (RAM) is overwritten with old
data in flash ROM. So, this relay must be turned ON when parameter data has been rewritten.
• This relay is enabled only for the X-axis, and the block data of all axes is batch-saved (data of X-
/Y-/-Z-/A-axes on the JW-14PS, and X-/Y-axes on the JW-12PS).
Switching of present position display mode
This relay sets the present position data display mode to either "Instruction value" or "Encoder
input value."
When this relay is set to "0", the display mode is "Instruction value," and when this relay is set to
"1", the display mode is "Instruction value."
• When the closed loop control mode (parameter 2 - address B+0000) is set to "Disabled," the
present position data (encoder input value) is not displayed even if this relay is set to "1".
Read absolute present position
When this relay changes state from OFF to ON, the present position read instruction is output from
the tool port to an absolute value-compatible driver, the present position is read from the driver,
and is preset as the present position on this unit.
• When reading is completed, the "Driver communications completed" relay turns ON.
• This function is enabled only when "Absolute value control mode selection" (parameter 2 -
address B+0020) is set to "Enabled."
Step No. at program operation (00 to 99)
This register sets the "Step No." to start program operation at.
• When the "Step No. enable" relay is ON, the "Step No." set at this register is enabled.
Position No. at teaching (00 to 99)
The "Position data No." to be registered during teaching is set at this register.
Designation of block data block No. (00 to 31)
The "Block No." for reading and writing block data is set at this register.
Override value (lower), Override value (upper)
When the "Override enable" relay is ON, the "Override value" set at this register is enabled.
Position instruction value (10
0
10
1
) to position instruction value (sign A/I 10
6
)
→→
→→
→See position
data (page 5-6).
Set the various position data to these registers during "Direct operation," "Present position preset"
and "Write interrupt output position data" operations.
• The setting range is -9999999 to +9999999.
• In the case of speed control in direct operation, position data is disabled, and the "Sign" bit
becomes the bit for specifying the direction of speed control operation.
• When the "Write interrupt output position data" relay changes state from OFF to ON, these
registers are for setting "position data of where interrupt output is generated" and "interrupt
output ON/OFF," and the "A/I" bit is for specifying "interrupt output ON/OFF."