Cutler-Hammer D50 - Inc Dinc Incb Dincb

Chapter 6: Instructions 75
Instruction
Mnemonic Increment Range
 Bit
■ Byte
INC
DINC
INCB
DINCB
Increment (INC, DINC)
BCD increment (INCB, DINCB)
■ Word
Ladder
D = D + 1: Decimal number increment
D = D + 1: BCD increment
Description
1. INC and DINC increase D in decimal by 1 when the input is On.
2. INCB and DINCB increase D in BCD (Binary Coded Decimal) by 1.
3. INC and INCB are byte instructions for processing 8 bit data.
4. DINC and DINCB are word instructions for processing 16 bit data.
Example
Program Expression Time Chart
INC
D =
R
R
INCB
D =
0
1
2
9
10
11
Max $FFFF $9999
...... 0 0 0 0 0 ….. 0 0 0 0 0
...... 0 0 0 0 1 ….. 0 0 0 0 1
Input (R0.1) M0005 (decimal) M0008(BCD)
...... 0 0 0 1 0 ….. 0 0 0 1 0
...... 0 1 0 0 1 ….. 0 1 0 0 1
...... 0 1 0 1 0 ….. 1 0 0 0 0
...... 0 1 0 1 1 ….. 1 0 0 0 1
INC
D = M0005
INCB
D = M0008
R000.1
R
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