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16ć4, 2 filećtoćfile or – Rockwell Automation 1772-LP3 PLC - 2/30 Programmable Controller Programming and Operations Manual User Manual

Page 283

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File Logic Instructions

Chapter 16

16Ć4

Figure 16.3

FILEĆTOĆFILE AND Example Rung

FILE TO FILE AND

COUNTER ADDR: 050
POSITION: 001
FILE LENGTH: 006
FILE A: 410- 415
FILE B: 574- 601
FILE R: 610- 615
RATE PER SCAN: 006

050

(EN)

17

050

(DN)

15

This output instruction operates on the contents of data Files A and B and
places the result of the operation OR in File R (Figure 16.1).

The logic operation OR compares each bit in File A to the corresponding
bit in File B. If either of the bits is a 1, a 1 is stored in the corresponding
bit location in File R. If neither of the compared bits is a 1, a 0 is stored in
File R (Table 16.B).

Table 16.B

Truth Table for Logical OR

Bit In File A

Bit In File B

Bit In File R

1

1

0

0

1

0

1

0

1

1

1

0

Instruction Overview:

Output instruction
Key sequence [FILE] 16
Requires 6 words of user program
Can operate in incremental, distributed complete or complete mode
Counter is internally indexed by the instruction

16.1.2
FileĆtoĆFile OR