Jan 21, 2018

Mnemonic Names of Commonly used Instructions in PLC

Mnemonic Names of Commonly used Instructions in PLC


In our daily programming of PLC like ABB, Allen Bradley, Omron, etc. we use Mnemonic and some of the very commonly used instructions in PLC are as follows. We know we have missed many of them, so please help us to complete the list by commenting the other mnemonic in the comment section.



Mnemonic Names of Commonly used Instructions in PLC


INSTRUCTION -------------------------------- MNEMONIC NAME

1. Examine if closed --> XIC --| |--

2. Examine If Open --> XIO --|\|--

3. Output Energized --> OTE --(OTE)- -

4. Branch Start --> BST

5. Next Branch --> NXB

6. Output Latch --> OTL --(L)--

7. Output Unlatch --> OUT --(U)--

8. One shot Rising --> OSR

9. Timer On-Delay --> Ton

10. Timer off-Delay --> Toff

11. Retentive Timer --> RTO

12. Count Up --> CTU

13. Count Down --> CTD

14. Reset --> RST --(RST)--



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