The ______________________________ in an add (ADD) instruction must be a register.

How many counter instructions can an Allen-Bradley PLC have?

Data files C5:0 through C5:255 can be used for ______________________________ instructions.

A ____ should be selected for the following operation: when the timer has completed its preset timing period, its timer done contact is closed.

In an LIM instruction, the test source must be a(n) ______________________________.

In an LEQ instruction, when the content of Source A is ______________________________ the content of Source B, the current will flow through the LEQ instruction block.

In the following ladder logic diagram, the subroutine is executed ____.

When RET instruction is executed, the processor jumps from the ____.

If the accumulated register on an Allen-Bradley SLC 500 PLC non-retentive timer on-delay (TON) is equal to the preset register, which of the following statement is correct?

What are the registers used for each Allen-Bradley SLC 500 PLC timer?