Fisher HART 2530H1 User manual

D102237X012
Fisher Controls International, Inc. 1996; All Rights Reserved
FIELDVUE, ValveLink, Fisher, Fisher-Rosemount, and Managing The Process Better are
marks owned by Fisher Controls International, Inc. or Fisher-Rosemount Systems, Inc.
HART is a trademark of the HART Communications Foundation
All other marks are the property of their respective owners.
This product may be covered by one or more of the following patents (5,434,774 and
5,451,923 ) or under pending patents.
Type 2 530H 1 H ART
Interchange Multiplexer
Contents
Introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multiplexer Mounting 4. . . . . . . . . . . . . . . . . . . . . . . .
HARTFilter Mounting 4. . . . . . . . . . . . . . . . . . . . . .
Junction Box Mounting 6. . . . . . . . . . . . . . . . . . . . . .
Connecting Multiplexer Power 7. . . . . . . . . . . . . . . . .
Connecting Multiple HART Interchange
Multiplexers 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Multiplexers to the
RS232-to-RS485 Converter 7. . . . . . . . . . . . . . . . .
Converter DIP Switches 7. . . . . . . . . . . . . . . . . . . . . .
Setting the Converter RS485 Termination
and Biasing 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Converter Baud Rate 9. . . . . . . . . . . . . .
Multiplexer DIP Switches 9. . . . . . . . . . . . . . . . . . . . . .
Setting the Multiplexer RS485 Addresses 9. . . . . .
Setting the Multiplexer RS485 Baud Rate 9. . . . . .
Connecting Field Devices to the Multiplexer 10. . .
Connecting HART Filters Directly to the
Multiplexer 10. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting HART Filters to the Multiplexer
Using the Type HJ200 Junction Box 11. . . . . . . .
Connecting Field Devices Directly to the
Multiplexer (without HART Filters) 11. . . . . . . . .
Connecting Field Devices to the Multiplexer
Using the Type HJ200 Junction Box
(without HART Filters) 12. . . . . . . . . . . . . . . . . .
Connecting a HART Communicator Using
the Type HJ200 Junction Box 12. . . . . . . . . . . .
System Startup 12. . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying Connections 12. . . . . . . . . . . . . . . . . . . . . .
Verifying the Network Baud Rate 13. . . . . . . . . . . . .
Verifying the HART Interchange
Multiplexer Addresses 13. . . . . . . . . . . . . . . . . . . .
Verifying the RS485 Network 13. . . . . . . . . . . . . . . .
Reading the Converter LED Indicators 13. . . . . . . .
Reading the Multiplexer LED Indicators 13. . . . . . .
Service 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. T ype 2530H1 HAR T Interchange Multiplexer
W6486/IL
Introduction
Scope of Manual
This instruction manual includes installation and main-
tenance information for the Type 2530H1 HART inter-
change multiplexer. Refer to separate manuals for
additional information on other FIELDVUEproducts
used with the multiplexer such as the Type DT4000
digital transducer, DVC5000 Series digital valve con-
trollers, HF200 Series HART filters, and the
ValveLinkSeries VL2030 software.
Only personnel qualified through training or experience
should install, operate, and maintain the Type 2530H1
HART interchange multiplexer. If there are any ques-
tions concerning these instructions contact your Fisher
Controls sales office or sales representative before
proceeding.
Description
The Type 2530H1 HART interchange multiplexer is a
HART-based multiplexer that links installed HART-
based field devices to a centralized personal computer
(PC). When used in conjunction with the ValveLink
Type VL2030 software, the multiplexer provides the
Instruction Manual
Form 5407
February 1996
Type 2530H1

Type 2530H1
2
Table 1. Specifications
Inputs
Accepts 1200 baud HART compatible signals from
up to 32 field instruments
Input Connectors
Supplied with two 37 pin female Cannon D-shell
connectors (for use with Type HJ200 junction box
cables) and eight 8-terminal connectors that accept
2-conductor plugs (Weidmuller part number 152646
or equivalent) from HF200 Series HART filters.
Eight terminal blocks that plug into the connectors,
each with eight cage-clamp contacts, are also sup-
plied for connecting individual wire pairs from field
instruments or from Type HF240 filters.
Outputs
HART RS485 selectable 9600, 19.2K, or 38.4K
baud
Addressable 0 to 31
Output Connections
Single terminal block with three cage-clamp con-
tacts
Power Supply Requirements
24 Vdc (36 Vdc maximum); 300 mA nominal
Power Supply Connections
Single terminal block with two cage-clamp contacts
Operative Ambient Temperature Limits
32 to 158F (0 to 70C)
Storage and Transportation Temperature Limits
–4 to 158F (–20 to 70C)
Housing
General purpose—additional enclosure recom-
mended for environmental protection
Mounting
Mounts to standard G-type (EN50035)/(DIN46277)
or T-type (EN50022)/(DIN46277-3) DIN rail. Dis-
tance from RS232-to-RS485 converter is 3000 feet
(914 m) maximum, longer distances are possible
with an RS485 repeater.
Dimensions
14.2 in (360 mm) long, 4.6 in (117 mm) wide, 2.6 in
(65 mm) high
Approximate Weight
3.8 lbs (1.7 kg)
Table 2. HJ200 Junction Box Specifications
Field Connections
Four receptacles accept up to sixteen plugs (Weid-
muller part number 152646 or equivalent). Each
plug accepts two conductors.
HART Interchange Multiplexer Cable Connection
37-pin D-shell female connector
Mounting
Type 32 or 35 DIN rail or wall mount
Dimensions
4 inches (102 mm) long by 3 inches (76 mm) wide
by 2 inches (50 mm) deep
Approximate Weight
6 oz. (0.2 kg)
Interconnecting Cable
Connects junction box to Type 2530H1 HART Inter-
change multiplexer. Supplied with 37-pin D-shell
male connector on each end.
Length: 25 feet (7 meters), 50 feet (15 me-
ters), 75 feet (23 meters), or 100 feet (30 meters)
capability to remotely configure, troubleshoot, and
monitor installed FIELDVUE instruments. It is the ideal
tool for commissioning new instruments or for monitor-
ing installed instruments.
Each multiplexer has four communication channels,
each channel connecting to eight field devices, to sup-
port a total of 32 HART-based field devices. With the
ability to network up to 32 multiplexers, a host PC can

Type 2530H1
3
Figure 2. Example T ype 2530H1 HAR T Interchange Multiplexer Installation with HF200 Series HAR T Filters
OUTPUT
TERMINALS
TYPE 2530H1 HART
INTERCHANGE
MULTIPLEXERS
PERSONAL COMPUTER
WITH VALVELINK
TYPE VL2030 SOFTWARE
FIELD
DEVICES
HF200 SERIES
HART FILTERS
TYPE HJ200
JUNCTION BOX
2-CONDUCTOR
PLUGS
37-PIN
D-SHELL
CONNECTOR
INTERCONNECTING
CABLE
RS485 NETWORK
RS232-RS485
CONVERTER
OUTPUT
CHANNELS
– - - UP TO 29 MORE
MULTIPLEXERS
A6791 / IL
communicate with up to 1024 HART-based devices on
a single network. Most PCs can support two network
connections to provide communication with up to 2048
field devices.
Figure 2 shows a typical HART communication sys-
tem. The multiplexers communicate with a host com-
puter over an RS485 network. The computer commu-
nicates to the multiplexer network through a serial port
using RS232 signal levels. Therefore, a converter is
required to convert the RS232 signal to an RS485 sig-
nal.
Typically, the multiplexer is installed in a system with
HF200 Series HART filters. The purpose of the filter is
to effectively isolate the control system analog output
from the HART communication signals and to keep
changes in the analog output from interfering with the
HART communication. The filter receives the 4 to 20
mA dc current signal from the control system and pro-
vides a filtered replica of this current to the field de-
vice. The filter does not modify the HART signals be-
tween the field device and the multiplexer.
The filter can mount directly on the control system out-
put terminals, as shown, or on DIN rails in a cabinet
near the control system. The field device then con-
nects to the filter output terminals. A communication
cable from the filter connects the HART signal to the

Type 2530H1
4
Figure 3. Example T ype 2530H1 HAR T Interchange Multiplexer Installation without Filters
Control
System Output
Terminals
Personal Computer
With Valvelink Type Vl2030 Software
Field
Devices
TYPE 2530H1 HART
INTERCHANGE
MULTIPLEXERS
RS232-RS485
CONVERTER RS485
NETWORK
– - - UP TO
29 MORE
MULTIPLEXERS
A6795 / IL
multiplexer. A connector on the communication cable
plugs either directly into a multiplexer terminal block or
into a Type HJ200 junction box.
The multiplexer also may be installed in a system that
does not require HART filters as shown in figure 3.
Individual wire pairs connect the field devices directly
to the multiplexer, via the field input terminal blocks on
the multiplexer, or through a Type HJ200 junction box.
When the junction box is used, the HART signal from
the filter or field device is connected to the junction
box. A multi-wire interconnecting cable connects be-
tween a 37-pin D-shell connector on the junction box
and one of the 37-pin D-shell connectors on the multi-
plexer. The junction box accepts up to 16 filter or field
device connections.
Specifications
Specifications for the Type 2530H1 HART interchange
multiplexer are listed in table 1. Specifications for the
Type HJ200 junction box are listed in Table 2. See the
appropriate instruction manuals for specifications on
the HF200 Series HART filters or the ValveLink Type
VL2030 software.
Installation
The HART interchange multiplexer is shown in figure
4. The field device input connections, power and
RS485 connections are labeled for installation conve-
nience. Each multiplexer is an addressable node on
the RS485 network. A standard eight-position DIP
switch is used for RS485 addressing and baud rate
selection. Three LEDs are provided for monitoring the
multiplexer status.
Mounting
Multiplexer Mounting
Mount the HART interchange multiplexer on a user-
supplied DIN rail. Two types of DIN rails can be used:
TS-35, symmetrical (Top Hat/T-Type) EN 50022
(DIN46277-3). See figure 5.
TS-32, asymmetrical (G-Type) EN50035
(DIN46277-1). See figure 6.
Install the HART interchange multiplexer near the field
device marshaling panels or termination panels.
HART Filter Mounting
Four types of filters are available. The Type HF210,
HF220, and HF230 filters mount directly on the control

Type 2530H1
5
Figure 4. HAR T Interchange Multiplexer T op V iew
GROUNDING STUD
DIP SWITCHES
SET ADDRESS,
BAND RATE, AND
TEST MODE
GROUNDING
STUD
DIN RAIL
MOUNTING
SCREW
CONNECTORS ACCEPT PLUGS FROM
HF200 SERIES HART FILTERS OR
TERMINAL BLOCKS WITH WIRE PAIRS
LED INDICATORS
DIN RAIL
MOUNTING
SCREW
RS485
CONNECTOR
POWER
CONNECTOR
37-PIN D-SHELL
CONNECTOR ACCEPTS
CABLE FROM TYPE
HJ200 HART JUNCTION BOX
REMOVABLE TERMINAL BLOCKS
ACCEPT WIRE PAIRS
FROM TYPE HF240 HART FILTER
OR DIRECTLY FROM FIELD DEVICE
37-PIN D-SHELL
CONNECTOR ACCEPTS
CABLE FROM TYPE HJ200
HART JUNCTION BOX
W6485*/IL
Figure5. Mounting Symmetrical T-Type DIN Rail
(HAR
T Interchange Multiplexer End V iew)
Clamp Screw
(loose 5 turns) Clamp Screw (fully tightened)
A6796/IL
Figure6. Mounting Asymmetrical G-T ype Din Rail
(HAR T Interchange Multiplexer End V iew)
Clamp Screw
(loose 5 turns) Clamp Screw
(fully tightened)
A6797/IL
system output terminals. The Type HF240 filter
mounts to a DIN rail. For additional information on fil-
ter installation, adjustment, and maintenance, refer to
the HF200 Series HART Filters Instruction Manual.
WARNING
To avoid personal injury or property
damage from an uncontrolled process,
Figure7. T ype HF210 HAR T Filter Showing Normal
Polarity Orientation
CONTROL SYSTEM
CONNECTION
FIELD
INSTRUMENT
CONNECTION HART COMMUNICATION
CABLE TERMINATED
WITH 2-CONDUCTOR PLUG
W6495*/IL
+
–
–+
HART COMMUNICATION
CABLE
FILTER
provide some temporary means of pro-
cess control before taking the loop out
of service.
Mounting Types HF210 and HF220—Cage Clamp
and Conventional Screw Terminal Filters
The Type HF210 and HF220 filters mount on a control
system output terminal strip that has a single row of
screw terminals. A pair of 16 AWG solid wires extend
from the input side of the filter. These wires connect to
the terminal block of the control system output. The
output side of the filter has either a screw-terminal
style or a cage-clamp style terminal assembly. A
10-foot (3 meter) cable connects the filter to the multi-
plexer.
These filters are available with normal or reverse po-
larity orientation. Figure 7 shows a Type HF210 filter
with normal polarity orientation, the input and output
negative (–) connections are to the left of the positive
(+) connections. The reverse polarity orientation has
the connections reversed; the negative (–) connec-

Type 2530H1
6
Figure8. T ype HF240 HAR T Filter
CONTROL SYSTEM CONNECTION
HART COMMUNICATION
CONNECTION
FIELD INSTRUMENT
CONNECTION
W6493*/IL
tions are to the right of the positive (+) connections,
rather than to the left as shown. The polarity is indi-
cated on the filter. Be sure to use the filter with the
correct polarity.
To mount the filters, provide some temporary means of
process control, then take the loop out of service.
Remove the field wiring from the control system 4 to
20 mA current output terminals. Connect the field wir-
ing to the filter output terminals, taking care to main-
tain correct polarity. Cut and strip the solid wires on
the filter input to the correct length and connect these
wires to the control system 4 to 20 mA output termi-
nals, again taking care to maintain correct polarity. If
the installation requires crossing wires to obtain the
correct polarity, the wrong filter is being used.
Type HF230—Staggered Screw Terminal Filters
The Type HF230 filters mount on a control system out-
put terminal strip that has two tiers (staggered) of
screw terminals. Two stamped metal fingers extend
from the input side of the filter. These fingers connect
to the terminal block on the control system output. The
output side of the filter has a screw-terminal style ter-
minal assembly. A 10-foot (3 meter) cable connects
the filter to the multiplexer.
To mount the filters, provide some temporary means of
process control, then take the loop out of service.
Remove the field wiring from the control system 4 to
20 mA current output terminals. Connect the field wir-
ing to the filter output terminals, taking care to main-
tain correct polarity. Place the stamped metal fingers
under the control system output terminals and fasten
securely.
Type HF240 DIN Rail Mount Filter
The Type HF240 filter, shown in figure 8, mounts on a
type 32 or 35 DIN rail. The filter has three 2-terminal
cage clamp style connectors for the filter input, filter
Figure9. T ype HJ200 Junction Box Printed
Wiring Board Removal
APPLY PRESSURE
TO WALLS OF
MOUNTING TRACK TO
REMOVE PRINTED
WIRING BOARD
W6492*/IL
output, and HART communications port. No wires or
connectors are provided in this design. The user pro-
vides field wiring and control system output wiring, the
existing wiring can be used. The user also provides
the wiring between the filter and the multiplexer.
To mount the filters, provide some temporary means of
process control, then take the loop out of service.
Without disconnecting existing wiring, remove the DIN
interconnect blocks from the rail. Install the filter on the
DIN rail. Disconnect the wires from the control system
output side of the interconnect blocks and connect
them to the filter input connectors, taking care to main-
tain correct polarity. Disconnect the wires from the
field side of the interconnect blocks and connect them
to the filter output connectors, taking care to maintain
correct polarity.
Shielded Wiring
If using shielded wiring on both sides of the filter, the
shield should connect across the filter. If the filter con-
nects directly to the control system output and
shielded loop wiring is being used, connect the shield
to system ground on the instrument side of the filter.
Junction Box Mounting
The Type HJ200 junction box is built on Augat Snap-
Track mounting track. The mounting track can be
mounted to a panel, or snapped to a DIN Rail using
the available mounting foot. Mounting holes are avail-
able on the back of the mounting track for screws, riv-
ets, or other fasteners. In addition, the mounting track
could be fastened with Velcro or some other means.
In all cases, except the DIN-foot, remove the printed
wiring board from the mounting track before fastening
the mounting track. Remove the printed wiring board
by applying pressure to the walls of the mounting
track, as shown in figure 9. After the mounting track is
mounted, re-install the printed wiring board by press-
ing it into the mounting track until it snaps in place.

Type 2530H1
7
Figure 10. End V iew of HAR T Interchange Multiplexer
Showing RS485 Connector , Power Connector , and Ground Stud
RS-485 CONNECTOR
GROUNDING
STUD
POWER CONNECTORW6488*/IL
Connecting Multiplexer Power
CAUTION
When applying power to the multiplexer,
do not exceed 36 volt dc. Exceeding 36
volt dc will blow the fuse. Although the
fuse automatically resets, constant ex-
posure to high voltages may damage
the unit.
The multiplexer requires 24 volt dc at 300 mA. Con-
nect the power supply using the 2-terminal removable
terminal block that is plugged into the multiplexer pow-
er connector. See figures 4 and 10 for the power con-
nector location. The power connector is polarized so
that it cannot be inserted incorrectly. The polarity of
the terminal block is marked on the multiplexer.
To connect the metalwork of the multiplexer to chassis
ground, use either of the studs provided on the unit.
See figure 10.
Note
The HART interchange multiplexer con-
tains a DC-to-DC converter so ground
loop problems will not occur.
No external power is required for the filters, they draw
their power from the 4 to 20 mA loop current.
Connecting Multiple HART Interchange
Multiplexers
Figure 11 shows the connection between multiplexers.
To connect multiple HART interchange multiplexers:
1. Connect the A and B terminals of each multiplexer
on the RS485 network to the A and B terminal of the
next unit (i.e., A to A and B to B).
2. Place a 100-ohm resistor between the A and B ter-
minals on the last multiplexer in the arrangement.
Note
The following step is optional.
3. Connect the shield of the RS485 twisted pair wire
to the 0V terminal on the multiplexer RS485 connector
to reduce interference with the RS485 line.
Connecting Multiplexers to the
RS232-to-RS485 Converter
CAUTION
Do not connect 24 volt dc power to the
RS485 connection. Power applied to the
RS485 connection can damage the
RS485 circuitry and cause HART inter-
change multiplexer failure.
The RS485 connector is a 3-pin removable terminal
block located just above the power connector. The
three RS485 connections are labeled as shown in fig-
ures 4 and 10.
Connect the first multiplexer to the RS232-to-RS485
converter. Refer to figure 11.
Note
The first HART interchange multiplexer
A and B terminals must be correctly
connected to the RS232-to-RS485 con-
verter to enable the host PC to commu-
nicate with all of the multiplexers on the
network.
1. Connect terminal A of the first multiplexer to termi-
nal G (DATA–) of the converter RS485 OUT connec-
tor.
2. Connect terminal B of the first multiplexer to termi-
nal Y (DATA+) of the converter RS485 OUT connec-
tor.
Converter DIP Switches
Both the RS232-to-RS485 Converter and the HART
interchange multiplexer have user selectable DIP
switches. As shown in figure 12, the converter has
three sets of switches on the back panel.
The set of three switches adjacent to the RS485
IN connector determine the termination and biasing of

Type 2530H1
8
Figure 1 1. RS485 Installation Guidelines
100 OHM RESISTOR
A6798 / IL
Figure 12. M1000 Series RS232 to RS485
ConverterBack Panel
W6490/IL
the RS485 input. (The connection labeled RS485 IN is
only used when the unit is installed as a repeater.)
The set of ten switches near the center of the
back panel determine the converter baud rate.
The set of three switches near the RS485 OUT
connector determine the termination and biasing of the
RS485 output.
For the set of three switches adjacent to the RS485
connectors, when in the up position the switch labeled
1K places a 1k ohm pull-up resistor between the
DATA+ line and +5 Vdc. Placing the switch labeled
–1K in the up position connects a 1k ohm pull-down
resistor between the DATA– line and ground. Placing
the switch labeled 220 in the up position terminates
the RS485 input or output with a 220 ohm resistor.
For additional information on setting the converter DIP
switches, refer to the converter instruction manual.
Note
Do not use a pencil to set the switches.
Graphite from the pencil can fall into the
switches causing them to fail.
To set the switches, use a pointed object to push the
switch to the desired position.
Setting the Converter RS485 Termination
and Biasing
When the converter is used as an RS232-to-RS485
converter, set the three switches adjacent to the
RS485 IN connector as follows: set the switches la-
beled +1K and –1K to the up position and the switch
labeled 220 to the down position. When using the unit
as a repeater place all three switches in the up posi-
tion.

Type 2530H1
9
Always set the three switches adjacent to the RS485
OUT connector to the up position, when using the con-
verter with a Type 2530H1 HART interchange multi-
plexer.
Setting the Converter RS485 Baud Rate
The set of ten switches between the RS232 connector
and the RS485 OUT connector determine the convert-
er baud rate. To set the converter for a baud rate of
38.4K baud (the recommended baud rate) set the
switch labeled 38.4K to the up position. Set all other
switches in the set of ten to the down position. To se-
lect another baud rate, set the switch labeled with the
desired baud rate to the up position and set all other
switches in the set of ten to the down position.
Multiplexer DIP Switches
The HART interchange multiplexer has eight dip
switch settings. The eight switches are numbered and
labeled on the face of the unit as follows:
Switches 1 through 5 set the network address.
Switches 6 and 7 set the baud rate.
Switch 8 puts the multiplexer into the test mode.
This switch should be OFF.
Note
Do not use a pencil to set the switches.
Graphite from the pencil can fall into the
switches causing them to fail.
To set the switches, use a pointed object to push the
switch to the desired position. See figure 13 for more
detail on multiplexer switch positions.
Setting the Multiplexer RS485 Addresses
Note
After changing the switch positions,
power to the multiplexer must be re-
moved and reapplied before the change
will become effective.
Use switches one through five to set network address-
es. There are a total of 32 possible addresses (0
through 31) for assignment to the multiplexer.
Each multiplexer in an RS485 network must have a
different address. When setting an address:
1. Remove power from the multiplexer.
2. Set the addresses. Table 3 shows the switch set-
tings for each of the 32 possible addresses.
Table 3. RS485 Address Switch Settings
Address
Switch Setting
Address 12345
0
1
2
3
4
Off
ON
Off
ON
Off
Off
Off
ON
ON
Off
Off
Off
Off
Off
ON
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
5
6
7
8
9
ON
Off
ON
Off
ON
Off
ON
ON
Off
Off
ON
ON
ON
Off
Off
Off
Off
Off
ON
ON
Off
Off
Off
Off
Off
10
11
12
13
14
Off
ON
Off
ON
Off
ON
ON
Off
Off
ON
Off
Off
ON
ON
ON
ON
ON
ON
ON
ON
Off
Off
Off
Off
Off
15
16
17
18
19
ON
Off
ON
Off
ON
ON
Off
Off
ON
ON
ON
Off
Off
Off
Off
ON
Off
Off
Off
Off
Off
ON
ON
ON
ON
20
21
22
23
24
Off
ON
Off
ON
Off
Off
Off
ON
ON
Off
ON
ON
ON
ON
Off
Off
Off
Off
Off
ON
ON
ON
ON
ON
ON
25
26
27
28
29
ON
Off
ON
Off
ON
Off
ON
ON
Off
Off
Off
Off
Off
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
30
31 Off ON ON ON ON ON ON ON ON ON
T able 4. Baud Rate Switch Settings
Baud Rate (baud)
Switch Setting
Baud Rate (baud) 6 7
9600
19200
38400
Off
ON
Off
Off
Off
ON
3. Apply power to the multiplexer.
Setting the Multiplexer RS485 Baud Rate
Note
After changing the switch positions,
power to the multiplexer must be re-
moved and reapplied before the change
will become effective.
Use switches six and seven to set the multiplexer
baud rate. A baud rate of 38.4K baud is recommended
for optimum data refresh rates. The switch settings
required to obtain the various baud rates are shown in
table 4.
Note
At system startup, check to see that all
network components, including the

Type 2530H1
10
Figure 13. Setting HAR T Interchange Multiplexer DIP Switches
OFF ON
1
5
6
7
8
ADDRESS
BAUD RATE
SET OFF (TEST)
W6485/IL
RS232-to-RS485 converter and the
ValveLink software are set to the same
baud rates to assure proper network op-
eration.
Connecting Field Devices to the
Multiplexer
Three methods are available for connecting field de-
vices to the multiplexer. The eight connectors on the
multiplexer accept terminal blocks supplied with the
multiplexer for individual wire pairs from the field de-
vices or accept the plugs provided with the HF200 Se-
ries filters. The 37-pin female D-shell connectors ac-
cept a multi-wire interconnecting cable from a Type
HJ200 junction box.
To connect the field devices to the HART interchange
multiplexer use either:
One pair of wires from each field device to the
multiplexer, or
One pair of wires from each HART filter to the
multiplexer, or
One pair of wires from each field device or HART
filter to a Type HJ200 junction box; then, connect the
interconnecting cable between the junction box and
the multiplexer.
Figure 14. HAR T Interchange Multiplexer Individual
Device Wiring Terminals
REMOVABLE
TERMINAL BLOCKS FOR
WIRING OF FIELD DEVICE INPUTS
W6489*/IL
CAUTION
To avoid HART communication failure,
do not use more than one of the above
methods to connect a single field device
to the same multiplexer.
Connecting HART Filters Directly to the
Multiplexer
For the Type HF210, HF220, and HF230 filters, one
pair of 22 AWG wires, 10 feet (3.05 meters) long and
terminated with a 2-conductor plug (Weidmuller part
number 152646 or equivalent) extends from the output
side of each filter. These wires connect to the multi-
plexer, either directly or through the Type HJ200
HART junction box. The Type HF240 DIN-rail mount
filter has a terminal block to allow for user installed
wiring. For more information on installing, adjusting,
and maintaining the HF200 Series HART filters, refer
to the HF200 Series HART Filters Instruction Manual .
1. Mount the filters and make the field wiring connec-
tions as described under mounting in the Installation
section of this manual.
2. To connect the filters to the multiplexer:
a. For Type HF210, HF220, and HF230 fil-
ters—Remove one or more terminal blocks with
cage-clamp contacts, shown in figure 14, from the
multiplexer. Insert the plug on the filter communica-
tion cable into the connector on the multiplexer.
The individual channel connections are marked on
the multiplexer case. The communication cable
from the filter can be connected to any channel.
b. For Type HF240 filters, connect a wire pair
from the communications terminal block on the fil-