xLadder user manual-V2.0.0.6

6.15.2 FIFO

Input/output Operand

Data type

TBL

VW, IW, QW, MW, SW, SMW, LW, T, C, *VD, *LD, *AC

word

DATA

VW, IW, QW, MW, SW, SMW, LW, AC, T, C, AQW, *VD, *LD, *AC

integer

FIFO: Remove the first entry in the table (TBL) and move

the value to the location specified by DATA.All other

entries in the table move a location upward.Each time the

instruction is executed,the number of entries in the table

reduces 1.

error conditions:

0006 Indirect address

0091 Operand range

SM1.5 Empty list

Special memory bit:

SM1.5 Empty list

Table Format:

VW200

The maximum number of entries

VW202

Entry count

W204

Data 0

VW206

Data 1

VW208

Data 2

..........

.........

191

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