Ladder display system
A ladder display system includes: a first controller having a first ladder program; and a second controller having a second ladder program that performs input/output processing with the first ladder program. An input/output signal table generating unit generates an input/output signal table relating an input/output signal of the first ladder program to an input/output signal of the second ladder program. An external reference execution unit specifies a signal of the second ladder program and requests transmission of at least a part of the first ladder program. A ladder program output unit transmits at least a part of the first ladder program including a signal corresponding to the specified signal to the second controller. A ladder program display unit displays at least the part of the first ladder program output by the ladder program output unit on the second controller.
1. A ladder display system comprising:
a first controller having a first ladder program with a first plurality of rungs for controlling a machine; and
a second controller having a second ladder program with a second plurality of rungs that performs input/output processing with the first ladder program for controlling the machine,
wherein the ladder display system is configured to:
generate, by at least one of the first controller and the second controller, an input/output signal table relating: a) input signals of the second plurality of rungs of the second ladder program to output signals of the first plurality of rungs of the first ladder program, and b) input signals of the first plurality of rungs of the first ladder program to output signals of the second plurality of rungs of the second ladder program,
specify, by the second controller, a specified input signal of a specified rung of the second plurality of rungs in the second ladder program,
request, by the second controller, the first controller to transmit a corresponding rung of the first plurality of rungs of the first ladder program, where the corresponding rung of the first ladder program includes a corresponding output signal of the first ladder program that corresponds to the specified input signal of the specified rung of the second ladder program as specified in the input/output signal table,
transmit, by the first controller, the corresponding rung to the second controller, and
display, by the second controller, the corresponding rung of the first ladder program.
2. The ladder display system according to claim 1 ,
wherein the second controller displays the corresponding rung of the first ladder program transmitted by the first controller in a pop-up area, in a different window, on a different display, or in a different tab area.
3. The ladder display system according to claim 1 ,
wherein the first controller outputs a trace of a waveform of a signal of at least the corresponding rung of the first ladder program, the trace of a waveform of the signal corresponding to the specified input signal of the specified rung of the second ladder program.