Fnc292 - Initr / Initialize R And Er - Mitsubishi Electric FX3G SERIES Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
33.3 FNC292 – INITR / Initialize R and ER
Outline
This instruction initializes extension registers (R) to "HFFFF" (<K-1>) in the RAM built into the PLC and extension file
registers in a memory cassette (flash memory) before data logging using the LOGR (FNC293) instruction.
In FX PLCs before Ver.1.30, use this instruction to initialize extension file registers (ER) before writing data to them
3UC
using SAVER (FNC291) instruction.
In FX PLCs Ver.1.30 or later and FX
3UC
extension file registers (ER) to "HFFFF" (<K-1>) in a memory cassette (flash memory) in units of sector.
1. Instruction format
FNC 292
INITR
2. Set data
Operand Type
S
n
*1. When a memory cassette is not used, extension file registers (ER) are not initialized.
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 (INITR and INITRP)
"n" sectors of extension registers in the PLC's built-in RAM starting from the one specified by
extension file registers in a memory cassette (flash memory) having the same device numbers are initialized to
"HFFFF" (<K-1>).
Initialization is executed in sector units.
Command
input
FNC292
INITRP
724
3U
Mnemonic
16-bit Instruction
P INITR
5 steps
INITRP
Head device number of extension register and extension file register
initialized
It is possible to specify only the head device number in a sector of extension registers.
Number of sectors of extension registers and extension file registers to be initialized
Digit Specification
S n
33 Extension File Register Control – FNC290 to FNC299
PLCs, the INITER (FNC295) instruction is also provided to initialize only
→ For the SAVER (FNC291) instruction, refer to Section 33.2.
→ For the LOGR (FNC293) instruction, refer to Section 33.4.
→ For the INITER (FNC295) instruction, refer to Section 33.6.
Operation Condition
32-bit Instruction
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
T C D R U \G
33.3 FNC292 – INITR / Initialize R and ER
Mnemonic Operation Condition
⎯
⎯
*1
sector to be
Others
Con- Real
Index
stant Number
V Z Modify K H E
S and "n" sectors of
Data Type
16-bit binary
Charac-
Pointer
ter String
" " P