Fnc294 - Rwer / Rewrite To Er - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
33.5 FNC294 – RWER / Rewrite to ER
Outline
This instruction writes the current values of an arbitrary number of extension registers (R) stored in the RAM in the
PLC to extension file registers (ER) stored in a memory cassette (flash memory or EEPROM) or the EEPROM built
into the PLC.
Because RWER (FNC294) instruction is not supported in FX
instruction instead.
1. Instruction format
FNC 294
P
RWER
2. Set data
Operand Type
S
n
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS
S
n
Explanation of function and operation
1. 16-bit operation (RWER)
1) In FX /FX
3U 3UC
The contents (current values) of "n" extension registers (R) starting from
extension file registers with the same device numbers in a memory cassette (flash memory).
Command
input
Extension registers (R) inside
built-in RAM
S
+1
S
S +2
S +n-1
*1 All points specified by the instruction are written (transferred).
•When "n" is set to "0", it is handled as "32768" when the instruction is executed.
Mnemonic
16-bit Instruction
RWER
5 steps
RWERP
Device number of extension register storing data
Number of devices
: 1 ≤ n ≤ 24000, FX
[FX /FX
3G 3U 3UC
Digit Specification
PLCs
FNC294
n
S
RWERP
Extension file registers (ER)
Write
inside memory cassette
*1
(transfer)
33 Extension File Register Control – FNC290 to FNC299
PLCs before Ver.1.30, use the SAVER (FNC291)
3UC
→ For the SAVER (FNC291) instruction, refer to Section 33.2.
Operation Condition
32-bit Instruction
Continuous
Operation
Pulse (Single)
Operation
Description
: 0 ≤ n ≤ 32767] to be written (transferred)
Word Devices
Special
System User
Unit
T C D R U \G V Z Modify K
E S
S
E +1
E S +2
E S +n-1
33.5 FNC294 – RWER / Rewrite to ER
Mnemonic Operation Condition
⎯
⎯
Data Type
16-bit binary
Others
Con- Real Charac-
Index
stant Number ter String
H E " "
S are written (transferred) to
31
32
33
34
35
Pointer
P
36
37
38
A
B
731