Eaton easySafety Manual page 204

Standard function blocks
200
Contacts
The contacts of the function block are evaluated in the
standard circuit diagram. A closed contact indicates:
Parameters
BT..E1
BT..E2
BT..E3
Memory requirement
The transfer data block function block requires 48 bytes of
memory plus 4 bytes per constant at the function block
inputs.
Operation of the function block
The transfer data block function block has two operating
modes.
h
No data blocks are initialised or copied if an error occurs.
INI mode, initialise marker ranges
There is one source range and one destination range. The
source range is specified at >I1. The length of the source
range is one byte. The destination range is specified at >I2.
The length of the destination range is specified by the
number of bytes at the >NO input.
The content of the source range is transferred to the marker
bytes in the destination range.
The function block carries out a transfer on a rising edge at
coil T_ (Trigger).
The error contacts E1, E2 and E3 are evaluated regardless of
the status of the trigger.
02/16 MN05013001Z EN
Function
Exceeding the source or destination range
Overlapping of source and destination range
Invalid offset