End Of Transition (Eot); Relay Ladder; Structured Text - Allen-Bradley Logix5000 Reference Manual

Chapter 11 Program Control Instructions (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT)

End of Transition (EOT)

EOT(data_bit);
Description:
Arithmetic Status Flags:
Fault Conditions:
Condition
Prescan
Rung-condition-in is false
Rung-condition-in is true
EnableIn is set
Instruction execution
Postscan
474
The EOT instruction returns a boolean state to an SFC transition.
Operands:

Relay Ladder

Operand
Data bit

Structured Text

The operands are the same as those for the relay ladder EOT instruction.
Because the EOT instruction returns a boolean state, multiple SFC routines can
share the same routine that contains the EOT instruction. If the calling routine is
not a transition, the EOT instruction acts as a TND instruction
(see page 465).
The Logix implementation of the EOT instruction differs from that in a PLC-5
controller. In a PLC-5 controller, the EOT instruction has no parameters.
Instead, the PLC-5 EOT instruction returns rung condition as its state. In a
Logix controller, the return parameter returns the transition state since rung
condition is not available in all Logix programming languages.
Not affected
None
Execution:
Relay Ladder Action
The rung-condition-out is set to false.
The rung-condition-out is set to false.
The instruction executes.
The rung-condition-out is set to true.
N/A
The instruction returns the data bit value to the calling routine.
The rung-condition-out is set to false.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Type Format
BOOL Tag
Structured Text Action
No action taken.
N/A
N/A
EnableIn is always set.
The instruction executes.
No action taken.
Description
State of the transition
(0=executing, 1=completed)