CPU S5-100U non vengono visualizzati più i testi degli allarmi su display

[aleb2]

Alla seriale della CPU (con EPROM,  cartuccia arancione) è collegato un visualizzatore di testi dove venivano visualizzati i testi degli allarmi che ora non appaiono più; la macchina si comporta correttamente (stop in caso di allarme ); ho fatto upload del .S5D file; suggerimenti?

[Livio Orsini]

1 ora fa, aleb2 ha scritto:

è collegato un visualizzatore di testi dove venivano visualizzati i testi degli allarmi

 

Di che tipo di HMI si tratta?

I 2 indiziati principali sono: guasto al visualizzatore o problema ai connettori/porte seriali

[aleb2]

Il visualizzatore (CET SYSTEM FXC202)  funziona con la seriale immagino con associazione bit -messaggio di testo, testo scritto nel visualizzatore; il cavo di collegamento è stato sostituito ma non è cambiato niente; il visualizzatore non sembra guasto in quanto 2 messaggi (macchina in STOP/RUN) li visualizza

[Livio Orsini]

Le ipotesi dei possibili guasti non sono molte:

• Porte seriali del visualizzatore e del PLC
• Cavo e connettori relative alla seriale
• Corruzione del software del visualizzatore
• Corruzione del software PLC.

Se escludi i primmi 3, devi indagre sugli ltri 2 usando gli appsiti attrezzi dati dal sistema di sviluppo.

[acquaman]

La maggior parte dei sistemi di allora era dotata di una batteria tampone per mantenere la la memoria attiva allo spegnimento della macchina e non perdere il programma.
Cosa abbastanza normale che ci si dimentichi di sostituirla e quando scarica al primo spegnimento il programma va perso.

Visto che la macchina funziona regolarmente, potrebbe essere successo al pannello operatore, ha perso il programma e quindi non visualizza più gli allarmi.

[aleb2]

Il visualizzatore non ha testi memorizzati ma viene usato come monitor, è il PLC che invia i caratteri ASCII sulla seriale; da capire cosa si è "inceppato" 

[hameg]

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