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PLC S7-1200 fisrt scan

 
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deray88
Junior 2
Junior 2
deray88

Joined: 30 Jul 2014
Posts: 22
Location: chile

PostPosted: 12/03/2015 21:36    Post subject: PLC S7-1200 fisrt scan Reply with quote

Estimados Colegas:

Tengo un problema con la programación de un PLC SIEMENS de la serie S7-12000.

Ya he configurado el BYTE para la las marcas del sistema (en mi caso he seleccionado la marca %M2800), en donde el bit %2800.0 estaría el FIRST SCAN, en el bit %2800.2 estaría el ALWAY TRUE, y en en el bit %2800.3 estaría el ALWAY FALSE.

Luego he intentado utilizar el bit %2800.2 (ALWAY TRUE), para indicarle a una pantalla HMI que el PLC está activo y en modo RUN. Pero no he podido lograr que este bit cambie a un "1" lógico y se active la bobina de salida con la información para la HMI.

Alguien podría ayudarme con este problema, y decirme si me falta hacer algo.


De antemano muchas gracias.
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deray88
Junior 2
Junior 2
deray88

Joined: 30 Jul 2014
Posts: 22
Location: chile

PostPosted: 12/03/2015 21:47    Post subject: Re: PLC S7-1200 fisrt scan Reply with quote

deray88 wrote:
Estimados Colegas:

Tengo un problema con la programación de un PLC SIEMENS de la înÈ™iruire S7-12000.

Ya he configurado el BYTE para la las marcas del sistema (en mi caso he seleccionado la marca %M2800), en donde el bit %2800.0 estaría el FIRST SCAN, en el bit %2800.2 estaría el ALWAY TRUE, y en en el bit %2800.3 estaría el ALWAY FALSE.

Luego he intentado utilizar el bit %2800.2 (ALWAY TRUE), para indicarle a una pantalla HMI que el PLC está activo y en modo RUN. Pero no he podido lograr que este bit cambie a un "1" lógico y se active la bobina de salida con la información para la HMI.

Alguien podría ayudarme con este problema, y decirme si me falta hacer algo.


De antemano muchas gracias.


Dear Colleagues:

I have a problem with a PLC's programming SIEMENS of the series S7-12000.

I already have configured the BYTE for her the check marks of the system ( in my case I have selected the check mark %M2800 ), in where the bit %2800.0 would be the FIRST SCAN, in the bit %2800.2 would be the ALWAY TRUE, and in in the bit %2800.3 would be the ALWAY FALSE.

Next I have tried to use the bit %2800.2 ( ALWAY TRUE ), in order to indicate HMI to a screen that the PLC is active and in mode RUN. But I could have achieved that this bit changes to a 1 logician and activate him the bobbin of exit with the information for the HMI.

Somebody would be able to help me with this problem, and being said if I have yet to do something.


In advance a lot of thanks.
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skim
Junior
Junior


Joined: 01 Mar 2015
Posts: 7

PostPosted: 12/03/2015 22:35    Post subject: Re: PLC S7-1200 fisrt scan Reply with quote

deray88 wrote:
deray88 wrote:
Estimados Colegas:

Tengo un problema con la programación de un PLC SIEMENS de la înÈ™iruire S7-12000.

Ya he configurado el BYTE para la las marcas del sistema (en mi caso he seleccionado la marca %M2800), en donde el bit %2800.0 estaría el FIRST SCAN, en el bit %2800.2 estaría el ALWAY TRUE, y en en el bit %2800.3 estaría el ALWAY FALSE.

Luego he intentado utilizar el bit %2800.2 (ALWAY TRUE), para indicarle a una pantalla HMI que el PLC está activo y en modo RUN. Pero no he podido lograr que este bit cambie a un "1" lógico y se active la bobina de salida con la información para la HMI.

Alguien podría ayudarme con este problema, y decirme si me falta hacer algo.


De antemano muchas gracias.


Dear Colleagues:

I have a problem with a PLC's programming SIEMENS of the series S7-12000.

I already have configured the BYTE for her the check marks of the system ( in my case I have selected the check mark %M2800 ), in where the bit %2800.0 would be the FIRST SCAN, in the bit %2800.2 would be the ALWAY TRUE, and in in the bit %2800.3 would be the ALWAY FALSE.

Next I have tried to use the bit %2800.2 ( ALWAY TRUE ), in order to indicate HMI to a screen that the PLC is active and in mode RUN. But I could have achieved that this bit changes to a 1 logician and activate him the bobbin of exit with the information for the HMI.

Somebody would be able to help me with this problem, and being said if I have yet to do something.


In advance a lot of thanks.



Use M2802.0 as a bit tag which is TRUE as long as PLC in RUN.
PLC S7-1200 fisrt scan PLC S7-1200 fisrt scan
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deray88
Junior 2
Junior 2
deray88

Joined: 30 Jul 2014
Posts: 22
Location: chile

PostPosted: 13/03/2015 20:02    Post subject: Re: PLC S7-1200 fisrt scan Reply with quote

skim wrote:
deray88 wrote:
deray88 wrote:
Estimados Colegas:

Tengo un problema con la programación de un PLC SIEMENS de la înÈ™iruire S7-12000.

Ya he configurado el BYTE para la las marcas del sistema (en mi caso he seleccionado la marca %M2800), en donde el bit %2800.0 estaría el FIRST SCAN, en el bit %2800.2 estaría el ALWAY TRUE, y en en el bit %2800.3 estaría el ALWAY FALSE.

Luego he intentado utilizar el bit %2800.2 (ALWAY TRUE), para indicarle a una pantalla HMI que el PLC está activo y en modo RUN. Pero no he podido lograr que este bit cambie a un "1" lógico y se active la bobina de salida con la información para la HMI.

Alguien podría ayudarme con este problema, y decirme si me falta hacer algo.


De antemano muchas gracias.


Dear Colleagues:

I have a problem with a PLC's programming SIEMENS of the series S7-12000.

I already have configured the BYTE for her the check marks of the system ( in my case I have selected the check mark %M2800 ), in where the bit %2800.0 would be the FIRST SCAN, in the bit %2800.2 would be the ALWAY TRUE, and in in the bit %2800.3 would be the ALWAY FALSE.

Next I have tried to use the bit %2800.2 ( ALWAY TRUE ), in order to indicate HMI to a screen that the PLC is active and in mode RUN. But I could have achieved that this bit changes to a 1 logician and activate him the bobbin of exit with the information for the HMI.

Somebody would be able to help me with this problem, and being said if I have yet to do something.


In advance a lot of thanks.



Use M2802.0 as a bit tag which is TRUE as long as PLC in RUN.
PLC S7-1200 fisrt scan PLC S7-1200 fisrt scan


Amigo,
esto es lo que yo hice... como ves, no hace lo que debería... debe estar faltandome algo!!
[img]https://www.facebook.com/photo.php?fbid=1540943996154671&set=pb.100007172552384.-2207520000.1426269590.&type=3&theater[/img]
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uti
Member junior
Member junior


Joined: 03 Feb 2015
Posts: 51

PostPosted: 13/03/2015 20:32    Post subject: Reply with quote

Maybe you have to put in English for understanding others..
I do not understand what you say...
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deray88
Junior 2
Junior 2
deray88

Joined: 30 Jul 2014
Posts: 22
Location: chile

PostPosted: 23/03/2015 03:56    Post subject: Re: PLC S7-1200 fisrt scan Reply with quote

deray88 wrote:
skim wrote:
deray88 wrote:
deray88 wrote:
Estimados Colegas:

Tengo un problema con la programación de un PLC SIEMENS de la succesiune S7-12000.

Ya he configurado el BYTE para la las marcas del sistema (en mi caso he seleccionado la marca %M2800), en donde el bit %2800.0 estaría el FIRST SCAN, en el bit %2800.2 estaría el ALWAY TRUE, y en en el bit %2800.3 estaría el ALWAY FALSE.

Luego he intentado utilizar el bit %2800.2 (ALWAY TRUE), para indicarle a una pantalla HMI que el PLC está activo y en modo RUN. Pero no he podido lograr que este bit cambie a un "1" lógico y se active la bobina de salida con la información para la HMI.

Alguien podría ayudarme con este problema, y decirme si me falta hacer algo.


De antemano muchas gracias.


Dear Colleagues:

I have a problem with a PLC's programming SIEMENS of the series S7-12000.

I already have configured the BYTE for her the check marks of the system ( in my case I have selected the check mark %M2800 ), in where the bit %2800.0 would be the FIRST SCAN, in the bit %2800.2 would be the ALWAY TRUE, and in in the bit %2800.3 would be the ALWAY FALSE.

Next I have tried to use the bit %2800.2 ( ALWAY TRUE ), in order to indicate HMI to a screen that the PLC is active and in mode RUN. But I could have achieved that this bit changes to a 1 logician and activate him the bobbin of exit with the information for the HMI.

Somebody would be able to help me with this problem, and being said if I have yet to do something.


In advance a lot of thanks.



Use M2802.0 as a bit tag which is TRUE as long as PLC in RUN.
PLC S7-1200 fisrt scan PLC S7-1200 fisrt scan


Amigo,
esto es lo que yo hice... como ves, no hace lo que debería... debe estar faltandome algo!!
[img]https://www.facebook.com/photo.php?fbid=1540943996154671&set=pb.100007172552384.-2207520000.1426269590.&type=3&theater[/img]


Hice varias cosas para resolver el error, entre ellas baje la dirección a %MB0.
Pero lo que resolvió el problema fue realizar una buena carga de los cambios realizados en el hardware al PLC.
Esto se logra directamente en la pantalla donde se realizan los cambios, en mi caso donde se elije la posibilidad de habilitar el First Scan, y se hace una descarga de estos cambios al PLC.
El error mio fue, asumir que como en equipos de otras marcas, cuando uno hace una compilación y posterior carga, se traspasan todos los cambios al equipo. En Siemens, los cambios se deben realizar de las pantallas donde uno modifica los parámetros.
Ojala se haya entendido...
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