Important Buffer Memory Locations - Mitsubishi Electric Melsec FX Series Beginners Manual

Learning to Use the FX Family for Positioning Control
4.3.2

Important buffer memory locations

The FX
2N
ory that contain information relevant to the control of positioning operations. The FX
PLC that is connected to the FX
to change and/or update information. This exchange of information takes place through dedicated
PLC instructions known as the FROM/TO instructions. (For FX
be used to transfer data to/from special function blocks.)
The following buffer memory addresses are used in the ladder program example below. For details on
other BFM addresses, refer to the FX-1PG/FX
BFM #
#0
#2, #1
#3
#5, #4
#6
#15
#18, #17
#20, #19
#22, #21
#24, #23
#25
#27, #26
#28
#29
Tab. 4-26: Buffer memory addresses of FX
Using a multiplication factor of 10
4 - 38
-1PG-E contains 32 buffer memory (BFM) addresses, which are 16-bit (1 word) areas of mem-
2N
Item
Pulse rate
Feed rate
Parameters
Bit 1,
System of units
Bit 0
Bit 5,
Multiplication factor
Bit 4
Maximum speed
Bias speed
Acceleration/Deceleration time
Target address 1
Operating speed 1
Target address 2
Operating speed 2
Operation command
Bit 0 Error reset
Bit 1 STOP command
Bit 2 Forward rotation limit
Bit 3 Reverse rotation limit
Bit 7 Relative/Absolute positioning
Bit 10 Two speed positioning START command
Current address
Status information
Error code
-1PG-E can send and receive data to the buffer memory addresses
-1PG User's Manual (JY992D65301).
2N
-1PG-E
2N
3
changes the units from μm to mm.
FX2N-1PG-E positioning
PLCs, the MOV instruction can also
3U(C)
Set value Note
4,000 PLS/rev
1,000 μm/rev
— —
Bit 1: 1, Bit 0: 0 Combined system
3
Bit 5: 1, Bit 4: 1
10
40,000 Hz
0 Hz
100 ms
100 mm
40,000 Hz
150 mm
10,000 Hz
— —
M0 X000
M1 X001
M2 X002
M3 X003
M7 (Bit 7 = 0) Absolute positioning
M10 X007
D11, D10 mm
M20–M31 —
D20 —
MITSUBISHI ELECTRIC
or FX
2N(C) 3U(C)