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2 INSTRUCTION TABLES
2.1 Types of Instructions
Application
instruction
Logical operation instruction Logical operations such as logical sum, logical product, etc. Page 355
APPLICATION
INSTRUCTIONS
Rotation instruction Rotation of designated data
Shift instruction Shift of designated data
Bit processing instruction Bit set and reset, bit test, batch reset of bit devices
Data processing instruction 16-bit data searches, data processing such as decoding and encoding
Structure creation instruction Repeated operation, subroutine program calls, indexing in ladder units
Table operation instruction Data table read/write
Buffer memory access
instruction
Data read/write from/to an intelligent function module
Display instruction Print ASCII code, etc.
Debugging and failure diagnosis
instruction
Check, status latch, sampling trace
Character string processing
instruction
Conversion between BIN/BCD and ASCII; conversion between BIN and
character string; conversion between floating decimal point data and
character strings, character string processing, etc.
Special function instruction Trigonometric functions, conversion between angles and radians,
exponential operations, natural logarithm, common logarithm, square roots
Data control instruction Upper and lower limit controls, dead band controls, zone controls
Switching instruction File register block No. switches, designation of file registers and comment
files
Clock instruction Reading/writing of the values of year, month, day, hour, minute, second, and
day of the week; addition/subtraction of the values of hour, minute, and
second; conversion of the values of hour, minute, and second into second;
comparison between the values of year, month, and day; and comparison
between the values of hour, minute, and second
Expansion clock instruction Reading of the values of year, month, day, hour, minute, second,
millisecond, and day of the week; addition/subtraction of the values of hour,
minute, second, and millisecond
Program control instruction Instructions to switch program execution conditions
Other instruction Instructions that do not fit in the above categories, such as watchdog timer
reset instructions and timing clock instructions
Data link
instruction
Link refresh instruction Designated network refresh Page 820
INSTRUCTIONS FOR
DATA LINK
Routing information read/write
instruction
Reads, writes, and registers routing information
Refresh device write/read
instruction
Reads or writes the refresh device.
Multiple CPU
dedicated
instruction
Multiple CPU dedicated
instruction
Writing to host CPU shared memory, Reading from other CPU shared
memory
Page 846 MULTIPLE
CPU DEDICATED
INSTRUCTIONS
Multiple CPU high-
speed transmission
dedicated
instruction
Multiple CPU device write/read
instruction
Writes/reads devices to/from another CPU. Page 861 MULTIPLE
CPU HIGH-SPEED
TRANSMISSION
DEDICATED
INSTRUCTIONS
Redundant system
instruction
Instruction for Redundant CPU System switching Page 880
REDUNDANT
SYSTEM
INSTRUCTIONS
(FOR REDUNDANT
CPU)
Types of instructions Description Reference
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