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Limit Switch |
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Limit switches are detecting the position of a certain static element called master. This element has to be selected inside the edit mask of the limit switch. In most cases, it will be a box, but it can also be any other movable element. Do not choose a linear mover as master, however, but one of the boxes which are moved by it. (There are also linear mover with integrated sensors).
In contrast to real limit switches, those of TrySim can have any size you like. Long-shaped limit switches can thus take over the function of a security bar, for example.
The sensitive area corresponds to the size of the limit switch. You cannot change the size with the help of the mouse. To do that you have to enter the edit mask.
If your limit switch has to be covered by more than just one element, please use the limit switch nose.
With the field ‘type’ you are able to configure a limit switch as ‘NO contact’ or ‘NC contact’. The also existing option ‘Switch’, by which the limit switch changes its status corresponding to every covering, is only useful for the simulation of special switches like the cross bar switch. When reporting a ‘1’ to the PLC, the limit switch is colored red.
In order to detect dynamics, please use the light barrier. If the sensor is covered by dynamics as well as by a part of the machine you have to use a light barrier as well as a limit switch. Do not put them on the same address, but program them in the OB2:
Please note that it states: 'S limit switch'. The assignment '= limit switch' does not work (why not?).
Limit switches can be made turnable. For this just choose within the edit mask the check box ‘turnable’. Please note that currently the turnable limit switches just detect the master if either one edge of the limit switch is inside the master or one edge of the master is inside the limit switch. Please read the general information about turnable elements.
See also:
Tabsheet: Sensors |