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User Manual
GFK-1503F
Retentive SET Coil
Retentive SET and RESET coils are similar to SET and RESET coils, but they are retained across
power failure or when the PLC transitions from to Run mode. A retentive SET coil sets a
discrete reference ON if the coil receives power flow. The reference remains ON until reset
by a retentive RESET coil.
Retentive RESET Coil
This coil sets a discrete reference OFF if it receives power flow. The reference remains OFF
until set by a retentive SET coil. The state of this coil is retained across power failure or when
the PLC transitions from Stop to Run mode.
10.8
Table Functions
The Table functions are used to:
•
Copy array data: ARRAY MOVE
•
Search for values in an array
The maximum length allowed for these functions is 32,767 for any type.
Data Types for the Table Functions
Table functions operate on these types of data:
INT
DINT
BOOL *
BYTE
WORD
* Applies to Array Move only.
10.8.1
Table Functions Array Move
The Array Move function copies a specified number of elements from a source array to a
destination array. When the function receives power flow, it copies the number of elements
specified from the input array, starting at the indexed location. The function then writes the
copied elements to the output array starting with the indexed location.
For bit data, when word-oriented memory is selected for the parameters of the source array
and/or destination array starting address, the least significant bit of the specified word is the
first bit of the array.
The indices in an Array Move instruction are 1-based. In using an Array Move, no element
outside either the source or destination arrays (as specified by their starting address and
length) may be referenced.
The OK output receives power flow unless one of the following occurs:
•
Enable is OFF.
•
(N + SNX – 1) is greater than (length).
Instruction Set Reference
Signed integer
Double precision signed integer
Bit data type
Byte data type
Word data type
Chapter 10
Jan 2020
159
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