Mitsubishi Electric FX3U-1PG - Monitor Data; BFM#27, #26] Current Address; BFM#28] Status Information

7 Buffer Memory
7.5 Monitor Data
77
FX3U-1PG User's Manual
1
Introduction
2
Specification
3
System Configuration
4
Installation
5
Wiring
6
Before Starting Positioning Operation
7
Buffer Memory
8
Manual Control
9
Positioning Control
10
Program Example
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.
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 FX3U-1PG condition can be checked in the ON/OFF condition of each bit.
BFM No.
Description R/W Default
High order
16bit
Low order
16bit
#27 #26 -2,147,483,648 to 2,147,483,647 (user unit) R/W K0
BFM No.
Bit
No.
Item Description R/W Default
High order
16bit
Low order
16bit
-#28
b0 READY
Turns on when the positioning operation can be executed.
• Conditions to turn on
- During the power supply start up
- At the completion of positioning
- During stop by STOP command during positioning
operation
- At error reset
• Conditions to turn off
- During the positioning operation
- At the time of error occurrence
R-
b1 Forward/Reverse
ON: Turns on during the forward pulse output
Stays on even after the forward pulse stops.
OFF: Turns off during the reverse pulse output
Stays on even after the reverse pulse stops.
b2
Zero return
completion
Turns on when the zero return completes.
• Conditions to turn on
- At the completion of the DOG type mechanical zero
return operation
- At the completion of the data set type mechanical
zero return operation
• Conditions to turn off
- The power is off
- When K0 is written to the status information
b3 STOP input ON
ON: STOP input ON
OFF: STOP input OFF
Same as the ON/OFF condition of the FX3U-1PG STOP
terminal.
b4 DOG input ON
ON: DOG input ON
OFF: DOG input OFF
Same as the ON/OFF condition of the FX3U-1PG DOG
terminal.