One Shot Rising (Osr); Relay Ladder - Allen-Bradley Logix5000 Reference Manual

One Shot Rising (OSR)

Description:
Arithmetic Status Flags:
Fault Conditions:
The OSR instruction sets or clears the output bit, depending on the status of the
storage bit.
This instruction is available in structured text and function block as OSRI,
see page 109.
Operands:

Relay Ladder

Operand
Storage bit
Output bit
When enabled and the storage bit is cleared, the OSR instruction sets the output
bit. When enabled and the storage bit is set or when disabled, the OSR
instruction clears the output bit .
Rung-condition-in
Storage Bit
Output Bit
Not affected
None
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI)
Type Format
BOOL Tag
BOOL Tag
Instruction is Instruction resets during
Description
Internal storage bit
Stores the rung-condition-in from the last time the
instruction was executed
Bit to be set
Chapter 2
105