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how to use anyobject_to_object

Created by: winterwang at: 1/8/2015 8:37 AM (10 Replies)

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1/8/2015 8:37 AM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	hello, there is a functio named anyobject_to_object, i want to why to use it? what is the programmer waht to do to use the function? thank you !

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1/8/2015 1:51 PM	Rate (0)
jacek d Platinum Member Joined: 9/23/2005 Last visit: 4/18/2021 Posts: 3328 Rating: (524)	Hi, anyObject_to_Object is rarely useful. However there're situations a programmer doesn't know type of an object while coding, i.e. errors handling with TechnologicalFaultTask. TSI delivers a source of the fault as a reference to an object instance. In generic error handling a programmer needs to know the exacttype of that object to handle it properly. With help of anyObject_to_Object it can be resolved. It works as follows: Let's suppose that the variable myFollowingAxis is ofa followingAxistype.Let's try to cast TSI#toInst to this variable: [code]myFollowingAxis:=anyObject_to_Object(TSI#toInst);[/code] If the check below evaluates to TRUEthen casting was successful and the TSI#toInst object type is a followingAxis, otherwise it's something else than followingAxis. [code]IF myFollowingAxis<>TO#NIL THEN[/code]
	Last edited by: jacek d at: 1/8/2015 2:59 PM various typos Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded.
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1/8/2015 2:13 PM	Rate (0)
A.Gabardo Posts: 87 Rating: (6)	Hi There are a lot of mode for do this. You can find for more detailshere But follow below a very simple example. INTERFACE //------------- import --------------------------------------------------------- USEPACKAGE CAM; //CAM_EXT; //PATH; //USES ; VAR_GLOBAL boFirstCicle : bool := true; boCheck : bool := false; _toAxisX : FollowingAxis; _toCamX : CamType; END_VAR PROGRAM pExample; END_INTERFACE IMPLEMENTATION PROGRAM pExample IF boFirstCicle THEN boFirstCicle := false; _toAxisX := ANYOBJECT_TO_OBJECT(AxisX); _toCamX := ANYOBJECT_TO_OBJECT(CamX); end_if; if _toAxisX = AxisX then boCheck := true; else boCheck := false; end_if; end_program END_IMPLEMENTATION OBS: AxisX is it your Real Axis or Virtual Axis. Hope this help you. Regards.
A.Gabardo Posts: 87 Rating: (6)
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1/8/2015 2:45 PM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	A.Gabardo Hi _toAxisX := ANYOBJECT_TO_OBJECT(AxisX); _toCamX := ANYOBJECT_TO_OBJECT(CamX); i am sorry ,but i am not know thepurpose of using it .can explan it ? thank you!

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1/8/2015 2:46 PM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	yes ！my project just use the function like you side to handle the error! thank you very much!

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1/12/2015 2:28 AM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	jacek d Hi, anyObject_to_Object is rarely useful. However there're situations a programmer doesn't know type of an object while coding, i.e. errors handling with TechnologicalFaultTask. may i know when the system use th technologicalFalutTask? thank you!

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1/12/2015 8:52 AM	Rate (0)
jacek d Platinum Member Joined: 9/23/2005 Last visit: 4/18/2021 Posts: 3328 Rating: (524)	winterwang may i know when the system use th technologicalFalutTask? thank you! Hi, well the Simotion's operating system calls this task whenever an alarm emerges on a technology object. And only then. There're 3 classes of technology alarms: notes, warnings and errors. More info can be found in the online help of the Simotion Scout.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded.
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3/7/2015 1:37 AM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	execse me ! myFollowingAxis<>TO#NIL what's this mean ?

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3/7/2015 6:27 AM	Rate (0)
ChristophD Grandmaster-Expert Joined: 5/12/2006 Last visit: 4/18/2021 Posts: 18965 Rating: (2373)	thats mean that the variable myfollowingaxis have a value different vom the initial (NULL) value

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4/10/2015 8:09 AM	Rate (0)
winterwang Bronze Member Joined: 1/8/2015 Last visit: 10/9/2019 Posts: 291 Rating: (1)	ChristophD thats mean that the variable myfollowingaxis have a value different vom the initial (NULL) value what's the meanning of TO#NIL ? how can i understand this: "adriveaxis:=driveaxis; adriveaxis:=anyobject_to_object(a); if adriveaxis<>TO#NIL then" ....... when the" adriveasis =TO#NIL"? WHY we need to compare them? thank you!

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