Introduction to Programming
Chapter 4
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The rung will become active immediately.
Programming Interruptions
If communication between the industrial terminal and processor is
interrupted when programming on-line in run/program mode, a rung could
be left incomplete (no output instruction). Upon initialization of the
industrial terminal, if an incomplete rung is thought to exist, proceed as
follows:
Step 1 – Locate the incomplete rung using the key sequence
[SHIFT][SEARCH].
Step 2 – Place the cursor at the end of the rung.
Step 3 – Complete the rung by changing the blank output to the desired
output instruction using the procedure, Changing an Instruction, Section
4.4.5.
The option of clearing the data table, user program and messages is
available with various clear memory functions. When memory write
protect is active, memory cannot be cleared except data between and
including address 010–377 in the data table. The clearing memory
instructions are summarized in Table 4.E.
4.4.6
Clearing Memory
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