Attach Cabling
MS-5000 Multidrop Concentrator User’s Manual
1-7
1–Set
up and
Inst.
LAN Connector
The LAN 6-pin, RJ-11
modular connector is
used for RS-485 mul-
tidrop communications.
See pin assignments in
table 1-2.
Modular, 4-wire cables
(preferably shielded)
with 6-pin connectors
are typical, but any
round or flat data cable
(minimum wire size: 24
AWG and minimum of four wires) can be used.
An additional ground wire (figure 1-7) may be needed if the device chassis can-
not be reliably earth-grounded.
See Appendix D, “Ground and Shield Considerations,” on page A-7.
See “Plan Scanning System” on page 1-2 for basic wiring patterns used in a
multidrop system.
Note:
The last Microscan device in the multidrop network must be terminated
correctly (see Appendix E, “Terminal Resistor,” on page A-9).
In the first multidrop trunk cable
between the concentrator and
the first logical device,
1
transmit
and reception lines are crossed
(see figure 1-7). In subsequent
trunk cable connections they are
NOT crossed but as shown in
figure 1-7.
An optional ground wire is
shown in both cables. The
shield shown in figure 1-7, if
used, is connected to earth
ground at the concentrator.
(See also
Appendix D, “Ground and Shield Considerations,” on page A-7
1. This applies to standard single concentrator networks and multiple concentrator networks.
Table 1-2 LAN Connector
Pin Assignments
Pin
Signal
1
Ground
2
Receive Data (–)
3
Receive Data (+)
4
Transmit Data (–)
5
Transmit Data (+)
Figure 1-6 LAN
Connector
1
6
Figure 1-7 Multidrop LAN Wiring
1
2
3
4
5
6
Gnd
RXD-
RXD+
TXD -
TXD +
X
TXD -
TXD +
RXD-
RXD+
5000 LAN (J7)
Connector
1st Cable
Connections
2nd and Subsequent
Cable Connections
TXD -
TXD +
RXD-
RXD+
Summary of Contents for MS-5000
Page 1: ...MS 5000 Multidrop Concentrator User s Manual P N 83 005000 REV J...
Page 8: ...viii MS 5000 Multidrop Concentrator User s Manual...
Page 52: ...Chapter 3 Menu Configuration 3 18 MS 5000 Multidrop Concentrator User s Manual 3 Serial Config...
Page 66: ...Chapter 4 Serial Commands 4 14 MS 5000 Multidrop Concentrator User s Manual 4 Operations...
Page 90: ...A 14 MS 5000 Multidrop Concentrator User s Manual Appendices...
