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Instruction Support and Operand Restrictions Section 2-6
2-6-8 Increment/Decrement Instructions
2-6-9 Symbol Math Instructions
Instruction Mnemonic Function
code
Symbol Operands Supported
variable
data types
AT setting
or array
variable
required
(Required
word data
size
shown in
parenthe-
ses.)
INCREMENT
BINARY
++
@++
590 Wd: Word UINT ---
DOUBLE INCRE-
MENT BINARY
++L
@++L
591 Wd: Word UDINT ---
DECREMENT
BINARY
--
@--
592 Wd: Word UINT ---
DOUBLE DECRE-
MENT BINARY
--L
@--L
593 Wd: 1st word UDINT ---
INCREMENT BCD ++B
@++B
594 Wd: Word WORD ---
DOUBLE INCRE-
MENT BCD
++BL
@++BL
595 Wd: 1st word DWORD ---
DECREMENT BCD --B
@--B
596 Wd: Word DWORD ---
DOUBLE DECRE-
MENT BCD
--BL
@--BL
597 Wd: 1st word WORD ---
Instruction Mnemonic Function
code
Symbol Operands Supported
variable
data types
AT
setting or
array
variable
required
(Required
word data
size
shown in
parenthe-
ses.)
SIGNED BINARY
ADD WITHOUT
CARRY
+
@+
400 Au: Augend word INT ---
Ad: Addend word INT ---
R: Result word INT ---
+ +
Wd
++L
Wd
--
Wd
--L
Wd
++B
Wd
++BL
Wd
--B
Wd
--BL
Wd
+
Au
Ad
R
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