IDEC FC4A-C24R2 User Manual

13: SHIFT / ROTATE INSTRUCTIONS
13-2 « FC4A MICROSMART USER’S MANUAL »
Example: SFTL
M8120
REP
M8120 is the initialize pulse special internal relay.
When the CPU starts operation, the MOV (move) instruction sets 43690
to data register D10.
Each time input I0 is turned on, 16-bit data of data register D10 is shifted
to the left by 1 bit as designated by operand bits. The last bit status
shifted out is set to a carry (special internal relay M8003). Zeros are set
to the LSB.
0Before shift: D10 = 43690 1 1 1000 1 0 1 1 1000 1 0
CY
M8003
MSB LSB
D10
1After first shift: D10 = 21844 01 1000 1 0 1 1 1000 1 0
CY
M8003
MSB LSB
D10
Bits to shift = 1
SOTU
I0
S1 –
43690
D1 –
D10
S1
D10
bits
1
0
00 0111 0 1 0 0 0111 0 00After second shift: D10 = 43688
CY
M8003
MSB LSB
D10
SFTL(W)
MOV(W)
Shift to the left

IDEC FC4A-C24R2 Specifications

General

Brand	IDEC
Model	FC4A-C24R2
Category	Controller
Language	English