Statement List (STL) - DCE FEL ČVUT v Praze

Data Block Instructions
5.2 OPN Open a Data Block
Format
OPN
Address Data block type Source address
DB, DI 1 to 65535
Description of instruction
Status word
Example
OPN opens a data block as a shared data block or as an instance data
block. One shared data block and one instance data block can be open at the same
time.
BR CC 1 CC 0 OV OS OR STA RLO /FC
writes: - - - - - - - - -
STL Explanation
OPN DB10 //Open data block DB10 as a shared data block.
L DBW35 //Load data word 35 of the opened data block into ACCU 1-L.
T MW22 //Transfer the content of ACCU 1-L into MW22.
OPN DI20 //Open data block DB20 as an instance data block.
L DIB12 //Load data byte 12 of the opened instance data block into ACCU 1-L.
T DBB37 //Transfer the content of ACCU 1-L to data byte 37 of the opened shared data
block.
Statement List (STL) for S7-300 and S7-400 Programming
5-2 A5E00706960-01