Omron SYSMAC C200HS Operation Manual page 163

Data Shifting
Description
Flags
Example
00005
00006
00007
00008
00009
SFTR(84) is used to create a single- or multiple-word shift register that can shift
data to either the right or the left. To create a single-word register, designate the
same word for St and E. The control word provides the shift direction, the status
to be put into the register, the shift pulse, and the reset input. The control word is
allocated as follows:
15 14 13 12
The data in the shift register will be shifted one bit in the direction indicated by bit
12, shifting one bit out to CY and the status of bit 13 into the other end whenever
SFTR(84) is executed with an ON execution condition as long as the reset bit is
OFF and as long as bit 14 is ON. If SFTR(84) is executed with an OFF execution
condition or if SFTR(84) is executed with bit 14 OFF, the shift register will remain
unchanged. If SFTR(84) is executed with an ON execution condition and the re-
set bit (bit 15) is OFF, the entire shift register and CY will be set to zero.
ER: St and E are not in the same data area or ST is greater than E.
Indirectly addressed DM word is non-existent. (Content of ∗DM word is
not BCD, or the DM area boundary has been exceeded.)
CY: Receives the status of bit 00 of St or bit 15 of E, depending on the shift
direction.
In the following example, IR 00005, IR 00006, IR 00007, and IR 00008 are used
to control the bits of C used in @SHIFT(84). The shift register is between LR 20
and LR 21, and it is controlled through IR 00009.
05012
Direction
05013 Status to input
Shift pulse
05014
05015
Reset
@SFTR(84)
050
LR 20
LR 21
Not used.
Shift direction
1 (ON): Left (LSB to MSB)
0 (OFF): Right (MSB to LSB)
Status to input into register
Shift pulse bit
Reset
Address Instruction
00000 LD
00001 OUT
00002 LD
00003 OUT
00004 LD
00005 OUT
00006 LD
00007 OUT
00008 LD
00009 @SFT(10)
LR
LR
Section 5-15
Operands
00005
05012
00006
05013
00007
00514
00008
05015
00009
050
20
21
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