Monitor Data; Bfm#27, #26] Current Address; Bfm#28] Status Information - Mitsubishi Electric MELSEC-F Series User Manual

FX -1PG User's Manual
3U
7.5

Monitor Data

Stores the operation condition of the positioning control. The monitor data are read-only, excluding the
current address and the current address (pulse conversion value).
7.5.1

[BFM#27, #26] Current address

Stores the current address data.
BFM No.
High order Low order
16bit 16bit
#27 #26
Point
• The stored address is always an absolute address. However, when the positioning is completed in the
interrupt 1-speed positioning or in the interrupt 2-speed positioning operation, the address is the relative
address after the interrupt detection.
• The current address can be changed to any specified address during stop.
When a value is written in the current address, the current address (pulse conversion value) (BFM#59,
#58) is also updated.
However, if the value written to the current address (BFM#27, #26) is equal to the current value, the
current address (pulse converted value) (BFM#59, #58) will not be updated.
• The address change during the positioning operation is invalid.
• Value is in user units and includes the position data multiplier.
• A value read from the servo amplifier by the ABS instruction (FNC155) of the PLC is the pulse conversion
value. Write in the current address (pulse conversion value) (BFM#59, #58).
7.5.2

[BFM#28] Status information

The FX -1PG condition can be checked in the ON/OFF condition of each bit.
3U
BFM No.
High order Low order
16bit 16bit
- #28
-2,147,483,648 to 2,147,483,647 (user unit)
Bit
Item
No.
Turns on when the positioning operation can be executed.
• Conditions to turn on
-
-
-
b0 READY
-
• Conditions to turn off
-
-
ON: Turns on during the forward pulse output
Stays on even after the forward pulse stops.
b1 Forward/Reverse
OFF: Turns off during the reverse pulse output
Stays on even after the reverse pulse stops.
Turns on when the zero return completes.
• Conditions to turn on
-
Zero return
b2 -
completion
• Conditions to turn off
-
-
ON: STOP input ON
OFF: STOP input OFF
b3 STOP input ON
Same as the ON/OFF condition of the FX
terminal.
ON: DOG input ON
OFF: DOG input OFF
b4 DOG input ON
Same as the ON/OFF condition of the FX
terminal.
Description
Description
During the power supply start up
At the completion of positioning
During stop by STOP command during positioning
operation
At error reset
During the positioning operation
At the time of error occurrence
At the completion of the DOG type mechanical zero
return operation
At the completion of the data set type mechanical
zero return operation
The power is off
When K0 is written to the status information
7 Buffer Memory
7.5 Monitor Data
R/W Default
R/W K0
R/W Default
R -
-1PG STOP
3U
-1PG DOG
3U
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