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Source copy data is read from the connected
device only once, when required. If a communication error occurs
during data read, the display unit's internal special relay
LS2032's Bit 12 is turned ON. When data read is completed normally,
Bit 12 is OFF.
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Reading from the source copy data and
writing the data to the destination is performed in one operation,
or it is accomplished by dividing the data into several items
equivalent to the number of Addresses used for the source copy
data. If a communication error occurs during data read, the result
of the data copy varies as follows, depending on whether the data
was processed in one operation or in several items: (Result of data
write operation O: Write complete, X: Unable to write)

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As the number of Addresses increases, more
time is required for writing data to the PLC. Depending on the
number of Addresses, it may take from 20 seconds to several
minutes.
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If data to be written exceeds the designated
address range, a communication error occurs. In this case, you must
turn OFF then ON the GP to reset the GP from the error.
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When data is written to the LS Area with the
Copy Memory function (memcpy), the data is written only to the User
area. Data cannot be written into the System Data area (LS0000 to
LS0019), Special area (LS2032 to S2047), or Reserved area (LS2048
to LS2095). However, you can read data from these areas.
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When using D-Script to copy 32-bit device
data to a 16-bit device, and the bit length is designated as 16
bits, only data in the lower 16 bits will be copied.
For example, memcpy ([w:[PLC1]w30.0100], [w:[PLC1]BD0100], 3)

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Also, when 16 bit device data is copied to a
32 bit device, data is copied to the bottom 16 bits and "0" is set
for the top 16 bits.
For example, memcpy ([w:[PLC1]BD0100], [w:[PLC1]w30.0100], 3)

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When 32-bit device data is copied to a
16-bit device, or when 16-bit device data is copied to a 32-bit
device, and the D-Script bit length defined in the script is 32
bits, the copy operation works as follows. When one of the devices
is a 32-bit device and the other is a 16-bit device, the memcpy ( )
function will use 16 bits as its data length parameter.
For example, memcpy ([w:[PLC1]w30.0100], [w:[PLC1]BD0100], 4)

For example, memcpy ([w:[PLC1]BD0100], [w:[PLC1]w30.0100], 4)

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If the original and destination data ranges
overlap, all overlapping data will be rewritten as follows.
For example, when copying D101-D104 to D100-D103
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Data is
copied beginning with address 0 (smaller address).

For example, when copying D100-D103 to D101-D104
-
Data is copied to a larger number
Address.

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Although this example's function designates
2 Addresses, these Addresses will not be counted as D-Script
Addresses.
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When using a device address for assignment,
communication with the device/PLC causes a slight delay in
assigning the value.