Basecomponent for a safetyswitch

 A safety switch is used to prevent equipment from unintentionally being
 connected when electrical or mechanical work is carried out.

 The object supervises a digital input, and when the signal is low an
 alarm is sent.

 Alarms can be disabled by the DisableSup input in the function object. This
 does not affect the On output of the function object.

 The On indicator, normally green, is colored gray when the switch is
 disconnected. The switch is turned from 0 to 1 and a red padlock is viewed.

 The figure displays a configuration with a safety switch, used to
 disconnect an electrical motor from the load.

Configuration

 The object contains the Di signal On that has to be connected to channel.

 For plc coding the function object BaseSafetySwitchFo is used.

 Create a function object in the plc editor and connect it to the current
 object with the connect function.

 No simulate object is needed for BaseSafetySwitch, but there is a
 simulate graph from which the On signal can be affected.

• BaseSafetySwitch

 Super class.

 Digital input. On is high when the switch is connected.

 Alarm text when the switch is disconnected.

 Supervision is disabled.
 Shows the input DisableSup in the plc Fo object.

 The plc function object connected to this object.
 This attribute is set when the function object is connected from
 the plc editor by the connect function.