Electro Industries/GaugeTech Nexus 1250, Installation & Operation Manual

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Electro Industries/GaugeTech
Doc #: E107-7-06-121
5-9
5.4: RS-485 Connection 5.4: RS-485 Connection— —Nexus Monitor to a Computer or PLC Nexus Monitor to a Computer or PLC
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Use any Port on the Nexus. If you use Port 1, set the selector switch beneath the port to RS-485 (see
Figure 5.3).
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The link using RS-485 is capable for up to 4000 feet (1219 meters).
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You must use an RS-485 to RS-232 converter, such as EIG’s Unicom 2500. See section 5.5.
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For information on connecting the Nexus Monitor to a modem, see sections 5.14–5.16.
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Do not use the V(+)/V(-) pins; they supply power to the Nexus Displays and Nexus I/O Modules.
5.5: RJ-11 (Telephone Line) Connection 5.5: RJ-11 (Telephone Line) Connection— —Nexus with Internal Modem Option Nexus with Internal Modem Option
to a PC to a PC
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Use RJ-11 Standard Telephone Line to connect with the Nexus. The RJ-11 line is inserted into the
RJ-11 Port on the face of the Nexus with Internal Modem Option.
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The length of the connection using RJ-11 into the Nexus is virtually unlimited.
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To connect with other Nexus Monitors in either local or remote locations, you MUST use Port 2 as a
Master and an RS-485 connection.
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The link using RS-485 is capable for up to 4000 feet (1219 meters).
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For more information on the Nexus Monitor with the Internal Modem Option, see Chapter 10 of this
manual.
5.6: RJ-45 Connection 5.6: RJ-45 Connection— —Nexus with Internal Network Option to multiple PC’s Nexus with Internal Network Option to multiple PC’s
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The Internal Network Option conforms to the IEEE 802.3, 10BaseT specification using unshielded
twisted pair (UTP) wiring. This allows the use of inexpensive RJ-45 connectors and CAT 3 or better
cabling.
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Using this LAN connection allows multiple PC’s to be connected concurrently. The RJ-45 line is
inserted into the RJ-45 Port on the face of the Nexus with Internal Network Option.
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The connection using RJ-45 into the Nexus can connect the Nexus to a network using Modbus/TCP
protocol over Ethernet.
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To connect with other Nexus Monitors in either local or remote locations, you MUST use Port 2
(which is labeled Ethernet Gateway) as a Master and an RS-485 connection. The link using RS-485
is capable for up to 4000 feet (1219 meters).
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For more information on the Nexus Monitor with the Internal Network Option, see Chapter 11 of
this manual.
Courtesy of NationalSwitchgear.com