Mitsubishi Electronics FX3U Garage Door Opener User Manual


 
453
FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
15 External FX I/O Device – FNC 70 to FNC 79
15.10 FNC 79 – TO / Write To A Special Function Block
11
FNC30-FNC39
Rotation and
Shift
12
FNC40-FNC49
Data Operation
13
FNC50-FNC59
High-Speed
Processing
14
FMC60-FNC69
Handy
Instruction
15
FNC70-FNC79
External FX I/O
Device
16
FNC80-FNC89
External FX
Device
17
FNC100-FNC109
Data
Transfer 2
18
FNC110-FNC139
Floating Point
19
FNC140-FNC149
Data
Operation 2
20
FNC150-FNC159
Positioning
Control
15.10 FNC 79 – TO / Write To A Special Function Block
Outline
This instruction writes data from a PLC to buffer memories (BFM) in a special function unit/block.
When a large capacity of data is written to buffer memories (BFM) by this instruction, a watchdog timer error may
occur. When splitting the data to be written does not affect the control, use WBFM (FNC279) instruction.
For WBFM (FNC279) instruction, refer to Section 31.2.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (TO and TOP)
For the common items between FROM instruction and TO instruction, refer to Subsection 15.9.1.
PLC (word device) Special extension unit/block (BFM)
"n"-point 16-bit data starting from inside a PLC are transferred (written) to "n"-point buffer memories starting
from the buffer memory (BFM) # m2 inside a special function unit/block No. m1.
Operand Type Description Data Type
m1
Unit number of a special extension unit/block
(K0 to K7 from the right side of the main unit)
16- or 32-bit binary
m2 Transfer destination buffer memory (BFM) number 16- or 32-bit binary
Device number storing the transfer source data 16- or 32-bit binary
n Number of transfer points 16- or 32-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
m1  
m2  
 
n  
P
FNC 79
TO
D
DTO
DTOP
Mnemonic Operation Condition
32-bit Instruction
17 steps
Continuous
Operation
Pulse (Single)
Operation
16-bit Instruction
9 steps
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
TO
TOP
S
S
S
Command
input
FNC 79
TO
m1 m2 nS
Unit No.
m1 = 0 to 7
Transfer destination (Special
extension unit/block) BFM#
m2 = 0 to 32766
Transfer source (PLC)
Number of transfer points
n = 1 to 32767