Honeywell XNX, Техническое руководство

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XNX Universal Transmitter
Section 2 - Installation and Operation 54
Terminals 3-1 through 3-4 are provided to facilitate
bus wiring; there is no internal connection to other XNX
circuitry. Terminal 3-1 is connected internally to 3-2.
Similarly, terminal 3-3 is connected to 3-4
3-5
3-4
3-3
3-2
3-1
3-6
3-7
3-8
3-9
3-10
A
-
-
+
+
A
B
B
S
TB-3 Modbus
S
Use shorting jumper
supplied to maintain
connection during
service
S5 EOL Term
Out
In
R
T
=120
TB3 Modbus Connections
Use Jumper
to maintain
connection
during service
SW5 - Loop Termination
Modbus
TB3
1 +
2 +
3 -
4 -
5 A
6 A
7 B
8 B
9 S
10 S
1
2
3
4
5
6
7
8
9
10
Figure 60. XNX Modbus Option Board Terminal Block / Jumper Switch
Modbus connections to the XNX are made through a pluggable
terminal block on the Modbus interface circuit board� Modbus
RTU protocol uses ASCII/Hex protocols for communication� See
Figure 35 for the terminal block legend� A loop termination point
(SW5) is included on the Modbus interface board to provide
termination of the Modbus loop�
2.3.4 Foundation Fieldbus
Foundation Fieldbus connections to the XNX transmitter are
made through a pluggable terminal block on the Foundation
Fieldbus option board, shown in Figure 60� A simulation switch
(SW5) is included on the board to enable/disable simulation
mode� Terminals 3-1 through 3-4 are provided to facilitate bus
wiring; there is no internal connection to other XNX circuitry�
Terminal 3-1 is connected internally to 3-2� Similarly, terminal 3-3
is connected internally to 3-4�
+
+
TB-3 Modbus
Use shorting jumper
supplied to maintain
connection during
service
S5 Sim Mode
Out
In
3-1
3-2
3-3
3-4
3-5
3-6 F+
F+
F-
F-
FS
FS
TB-3 FFB
Jumper
assignments
1
2
3
4
5
6
to internal
ground lug
SW5 -
Sim switch
Internal ground lug
Foundation Fieldbus
ground cable
Foundation
Fieldbus
TB3
1 F+
2 F+
3 F-
4 F-
5 FS
6 FS
Figure 61. Foundation Fieldbus Option Board, Terminal Block, Jumper Switch