to download the Eurotherm piccolo⢠Manual in PDF format
to download the Eurotherm piccolo⢠Manual in PDF format
to download the Eurotherm piccolo⢠Manual in PDF format
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User <strong>Manual</strong><br />
Piccolo Range<br />
2.14 Digital Communications<br />
Optional.<br />
Digital communications uses <strong>the</strong> Modbus pro<strong>to</strong>col EIA485 2-wire (formerly RS485).<br />
☺ Cable screen should be grounded at one po<strong>in</strong>t only <strong>to</strong> prevent earth loops.<br />
• Isolated 300Vac CAT II.<br />
EIA485 Connections<br />
220Ω<br />
term<strong>in</strong>ation<br />
resis<strong>to</strong>r<br />
Twisted pair<br />
Rx<br />
Tx<br />
Com<br />
Tx<br />
Rx<br />
Com<br />
RxB<br />
TxB<br />
RxA<br />
TxA<br />
Com<br />
HD<br />
HE<br />
HF<br />
Common<br />
A(+)<br />
B(-)<br />
Screen<br />
EIA232/EIA485 2-<br />
wire communications<br />
converter Type<br />
KD485 is<br />
recommended <strong>to</strong><br />
convert EIA485 <strong>to</strong><br />
<strong>the</strong> EIA232 port on<br />
<strong>the</strong> PC<br />
HD<br />
HE<br />
HF<br />
Daisy Cha<strong>in</strong><br />
<strong>to</strong> fur<strong>the</strong>r<br />
controllers<br />
220Ω term<strong>in</strong>ation<br />
resis<strong>to</strong>r on last<br />
controller <strong>in</strong> <strong>the</strong> l<strong>in</strong>e<br />
16 Part No HA031260 Issue 1 May -12
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