Siemens SIMATIC NET PROFIBUS Owner's Manual page 394

Infrared Link Modul (ILM)
13 References
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PROFIBUS networks
SIEMENS AG
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DIN 19245 Part 1 (04.91):
"Messen, Steuern, Regeln; PROFIBUS Teil 1;
Process Field Bus; Übertragungstechnik, "
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DIN 19245 Teil 2 (10.91):
"Messen, Steuern, Regeln; PROFIBUS Teil 3;
Process Field Bus; Dezentrale Peripherie (DP)"
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EIA Standard RS 485 (April 1983):
"Standard for electrical characteristics of generators
and receivers for use in balanced digital multipoint systems"
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