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en:software:devices:modbus [2016/12/21 16:56] – [5.2.3. Variabili di Stato per diagnostica operazione:] qem103 | en:software:devices:modbus [2016/12/21 17:02] – [Read Coil] qem103 | ||
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The SENDSYC coomand it becomes necessary when you want to synchronize master data packet writing by reading the same data from the slave (can be used when both master and slave are Qmove). | The SENDSYC coomand it becomes necessary when you want to synchronize master data packet writing by reading the same data from the slave (can be used when both master and slave are Qmove). | ||
- | ==== - Richieste di lettura | + | ==== - Read request |
=== Read Coil === | === Read Coil === | ||
- | Funzione di lettura a bit. Si vogliono leggere i bit di un certo slave (// | + | |
- | impostare | + | Read bit function. You want to read the bits of a slave (// |
- | numero di bit che si intendono leggere. Bisogna impostare | + | (//addr// + //num// - 1) <= 512 e (//tabreg// + //num// - 1) <= 512 otherwise the request will fail (reporting by //wcmd//). |
- | master | + | |
- | soddisfare sempre le seguenti due condizioni:\\ | + | |
- | (//addr// + //num// - 1) <= 512 e (//tabreg// + //num// - 1) <= 512 altrimenti la richiesta non potrà essere eseguita | + | |
=== Read Input === | === Read Input === |