Introduction.

Workshop PG5
Instructionlist
7.4 Basic Instructions:
Binary Instructions:
Binary instructions work with inputs, outputs, flags, the state of timers/counters,
and the ACCU.
The ACCU is nothing more then an internal System flag, which memorizes the
result of the last instruction. It can be either high or low.
We have three different types of binary instructions:
1. Type 2. Type 3. Type
The first group of instructions
alters the ACCU
state
In the second group of
instructions, the execution
of the instruction
depends on the ACCU
state.
The third group of instructions
depend on the
ACCU state and alters the
ACCU state.
Input
Output
Or Flag
Instructions:
ACC
STH
STL
Input
Output
Or Flag
Instructions:
DYN
OUT
SET
RES
COM
Input
Output
Or Flag
Instructions:
ANH
ANL
ORH
ORL
XOR
LU
ACCU
ACCU
LU Input
Output
Or Flag
LU
ACCU
LU= Logic Unit
Example:
STH I 14
Sets the ACCU to high if
Input 14 is high.
Example:
RES F 10
Sets the flag 10 to 0 if the
ACCU is high.
Example:
ANH I 23
The ACCU is AND linked
with the logical state of
input 23, the ACCU is set
to the result.
PG5-07-E © Saia-Burgess Controls Ltd. Page 7-10