Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 128)

Chapter 8
Using Basic Instructions
8–9
Using SET
When you assign an address to the SET instruction that corresponds to the
address of a physical output, the output device wired to this screw terminal is
energized when the bit is set (turned on or latched).
When rung conditions become false (after being true), the bit remains set and
the corresponding output device remains energized.
When enabled, the SET instruction tells the controller to turn on the
addressed bit. Thereafter, the bit remains on, regardless of the rung
condition, until the bit is turned off (typically by a RST instruction in another
rung).
Entering the Instruction
You enter the instruction from within the program monitor functional area.
P 0 0 0 L
B / 0 0
Using RST
When you assign an address to the RST instruction that corresponds to the
address of a physical output, the output device wired to this screw terminal is
de-energized when the bit is cleared (turned off or unlatched).
The RST instruction tells the controller to turn off the addressed bit.
Thereafter, the bit remains off, regardless of the rung condition, until it is
turned on (typically by a SET instruction in another rung).
Entering the Instruction
You enter the instruction from within the program monitor functional area.
P 0 0 0 U
B / 0 0
Branch instructions are connecting instructions unique to instruction list
programming. There are two types of branch instructions:
•
multiple output circuit connectors (MPS, MRD, and MPP)
•
block connectors (ANB and ORB)
Since these instructions are used solely for connecting purposes, there are no
parameters to enter.
SET
2
L
To access the SET instruction, press:
RST
3
U
To access the RST instruction, press:
Branch Instructions Overview