Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Uživatelský manuál stáhnout pdf (Strana 169)

Troubleshooting Aids

Chapter 13

135

If an illegal opcode should occur you can compare the rung containing the

illegal opcode with the equivalent rung in a hard copy printout of the program.

you must either replace the error with its correct instruction, replace the

instruction, or remove it. The ERR message due to an illegal opcode cannot be

removed directly. Instead, remove and replace the entire rung. You should

identify and correct the cause of the problem in addition to correcting the ERR

message.

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Rockwell-automation 1772-LV Mini-PLC - 2/15 Programmable Controller (S Uživatelský manuál Strana 169