Omron Programmable Terminals NT31 NT31C Manual de usuario Pagina 96

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SECTION 5
Connecting to the Host from the RS-422A/485 Port
This section describes the method for connecting to the host using the RS-422A/485 port of the PT.
5-1 Connecting to the Host’s RS-232C Port 86. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-1 The Type of Host and Settings 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-1-2 1:1 Connection between RS-422A/485 at the PT and RS-232C at the Host 88. . . . .
5-1-3 1:N Connection between RS-422A/485 at the PT and RS-232C at the Host 92. . . .
5-1-4 Recommended Connectors, Cables, and Crimp Terminals 97. . . . . . . . . . . . . . . . . .
5-1-5 Setting the Terminal Resistance for RS-422A/485 Communications 99. . . . . . . . . .
5-2 Connecting to the Host’s RS-422A/485 Port 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2-1 Host Types and Settings 101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2-2 Direct Connection between RS-422A Ports at Both Units 117. . . . . . . . . . . . . . . . . .
5-2-3 Direct Connection between RS-485 Ports at Both Units 121. . . . . . . . . . . . . . . . . . . .
5-2-4 1:N Connection among RS-422A Ports 122. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2-5 1:N Connection among RS-485 Ports 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5-2-6 Recommended Connectors, Cables and Crimp Terminals 127. . . . . . . . . . . . . . . . . .
5-2-7 Setting the Terminal Resistance for RS-422A/485 Communications 128. . . . . . . . . .
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