Siemens Simatic S7 Series

References
E.4 Instructions
S7-200 SMART
696 System Manual, 09/2015, A5E03822230-AC
E.4
Instructions
Instructions
The STL instruction names and descriptions are shown in the tables below. See the chapter
on program instructions (Page 149) for the LAD and FBD instructions.
Boolean instructions
STL
Description
LD bit
LDI bit
LDN bit
LDNI bit
Load
Load Immediate
Load Not
Load Not Immediate
A bit
AI bit
AN bit
ANI bit
AND
AND Immediate
AND Not
AND Not Immediate
O bit
OI bit
ON bit
ONI bit
OR
OR Immediate
OR Not
OR Not Immediate
LDBx IN1, IN2 Load result of Byte Compare
IN1 (x:<, <=,=, >=, >, <>I) IN2
ABx IN1, IN2 AND result of Byte Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
OBx IN1, IN2 OR result of Byte Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
LDWx IN1, IN2 Load result of Word Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
AWx IN1, IN2 AND result of Word Compare
IN1 (x:<, <=,=, >=, >, <>)I N2
OWxIN1, IN2 OR result of Word Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
LDDx IN1, IN2 Load result of DWord Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
ADx IN1, IN2 AND result of DWord Compare
IN1 (x:<, <=,=, >=, >, <>)IN2
ODx IN1, IN2 OR result of DWord Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
LDRx IN1, IN2 Load result of Real Compare
IN1 (x:<, <=,=, >=, >, <>) IN2
ARx IN1, IN2 AND result of Real Compare
IN1 (x:<, <=,=, >=, >, <>) IN2