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<div class="moz-cite-prefix">Da se prenaset vice 16b registru v
jednom paketu, odhaduji az 255, jak pri cteni, tak pri zapisu. Je
to tusim prikaz Read/Write multiple registers.<br>
<br>
Dne 22. 6. 2014 11:46, Martin Vancl napsal(a):<br>
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<div>S Modbus jsem nikdy nepracoval, takze ted asi budu za
blbce, ale da se nejak po Modbus prenaset vetsi mnozstvi
dat?<br>
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Pokud jsem dobre koukal, tak je mozne v jednom pozadavku
prenest 1bit, nebo 16bitove slovo - strana 3 <a
moz-do-not-send="true"
href="http://home.zcu.cz/%7Eronesova/bastl/files/modbus.pdf">http://home.zcu.cz/~ronesova/bastl/files/modbus.pdf</a><br>
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Ja potrebuju napr. u teplotniho cidla prenest jeho id a
teplotu.<br>
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Id ma 8 bajtu:<br>
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<div>DeviceAddress temp01 = { 0x28, 0x8A, 0xB1, 0x40, 0x04,
0x00, 0x00, 0xC7 }; <br>
DeviceAddress temp02 = { 0x28, 0xCC, 0x92, 0x40, 0x04,
0x00, 0x00, 0xB6 };<br>
DeviceAddress temp03 = { 0x28, 0x4D, 0x8D, 0x40, 0x04,
0x00, 0x00, 0x78 };<br>
DeviceAddress temp04 = { 0x28, 0x9A, 0x80, 0x40, 0x04,
0x00, 0x00, 0xD5 };<br>
DeviceAddress temp05 = { 0x28, 0xE1, 0xC7, 0x40, 0x04,
0x00, 0x00, 0x0D };<br>
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<div>a teplota bude jeden integer (20.35°C * 100 = 2035).<br>
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<div><br>
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<div>Da se to po Modbus prenest v jednom pozadavku (9 bajtu
- 8 id a 1 hodnota)?<br>
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<div>Zatim se mi zda nejlepsi udelat si vlastni protokol.<br>
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<div class="gmail_extra"><br clear="all">
<br>
-- <br>
S pozdravem<br>
Bc. Martin Vancl<br>
<br>
e-mail: <a moz-do-not-send="true"
href="mailto:tux.martin@gmail.com" target="_blank">tux.martin@gmail.com</a><br>
www: <a moz-do-not-send="true"
href="http://martin.vancl.eu/" target="_blank">http://martin.vancl.eu/</a>
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