Rockwell-automation Logix5000 Controllers Produced and Consumed Tags P Uživatelský manuál stáhnout pdf (Strana 33)

Produce a Large Array Chapter 2

6. Enter this logic.

When the offset value in array_ack[0] is not equal to the current offset value but array_ack[1] equals -999, the consumer has begun to receive a new packet, so the rung moves -999 into

the last element of the packet. The consumer waits until it receives the value -999 before it copies the packet to the array. This guarantees that the consumer has new data.

Rockwell Automation Publication 1756-PM011F-EN-P - October 2014 33

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Programming Manual 1
Important user information 2
Summary of Changes 3
Table of contents 5
Preface 7
Studio 5000 environment 7
Additional resources 7
Produce and Consume a Tag 9
Connection requirements of 10
Organize tags for produced 10
Produce a tag 12
Create a consumer tag 14
RPI limitations and 18
Set RPI limits, default for 19
Unicast connection options 20
Set up the consumer tag 21
Verify consumed tag 22
Produced and consumed 25
RPI scenarios 25
Scenario 2 26
Scenario 3 27
1769-L2x and 1769-L3x RPI 28
RPI I/O faults 30
Produce a Large Array 31
Produce a large array 32
6. Enter this logic 33
Rockwell Automation support 40

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