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-

Type 2530H1
11
Figure 15. T ype HJ200 Junction Box with Plug
Connections from HF200 Series HAR T Filters
37-PIN D-SHELL CONNECTOR FOR
CABLE TO MULTIPLEXER
2-CONDUCTOR PLUGS
FROM FILTERS
W6491*/IL
ter to an adjacent pair of cage-clamp contacts, cor-
responding to an input channel, on one of the ter-
minal blocks shown in figure 14. The individual
channel connections are marked on the multiplexer
case. The wire pair from the filter can be connected
to any channel.
The convention for field device input polarity is + left, –
right, for each input; however, the multiplexer is insen-
sitive to polarity.
3. Route individual wiring along other signal wiring
(analog or digital, but no power) paths between the
control system and the multiplexer to ensure HART
signal integrity.
Connecting HART Filters to the
Multiplexer Using the Type HJ200
Junction Box
The two 37-pin female D-shell connectors on the multi-
plexer permit connecting the multiplexer to the HF200
Series HART filters through a Type HJ200 HART junc-
tion box. A multi-wire cable connects the multiplexer to
the junction box. Figure 15 shows filter connections to
a Type HJ200 HART junction box.
1. Mount the junction box as described in the Installa-
tion section.
2. The junction box printed wiring board has two con-
nectors (J1 and J2) for connecting the filter HART
communication cable as illustrated in Figure 16. The
silk screen on the printed wiring board indicates two
channel numbers for each filter connection. Channel
numbers 1 through 16 designate the channel number
if the interconnecting cable between the junction box
and the multiplexer is connected to the 37-pin connec-
tor on the multiplexer labeled LOOPS 1-16. Channel
numbers 17 through 32 designate the channel number
Figure 16. Junction Box Printed Wiring Board Show -
ing HAR T Communication Channel Identification
A6792 / IL
if the interconnecting cable between the junction box
and the multiplexer is connected to the 37-pin connec-
tor on the multiplexer labeled LOOPS 17-32. Connect
the filters to the junction box as follows:
a. For Type HF210, HF220, and HF230 filters—
Insert the plug on the filter communication cable
into the connector on the junction box. The commu-
nication cable can be connected to any channel.
b. For Type HF240 filters—Remove one or more
of the terminal blocks, shown in figure 14, from the
multiplexer inputs and plug them into the connec-
tors on the junction box. Connect a wire pair from
the HART communications terminal block on the
filter to an adjacent pair of cage-clamp contacts,
corresponding to an input channel, on the junction
box terminal block. The wire pair from the filter can
be connected to any channel.
The convention for field device input polarity is + left, –
right, for each input; however, the multiplexer is insen-
sitive to polarity.
3. Connect the interconnecting cable between the
37-pin D-shell connector (P1) on the junction box and
one of the 37-pin D-shell connectors on the multiplex-
er.
4. Route individual wiring between the filters and junc-
tion box along other signal wiring (analog or digital, but
no power) paths between the control system and the
junction box to ensure HART signal integrity.
Connecting Field Devices Directly to the
Multiplexer (without HART Filters)
1. Use the removable cage-clamp contact terminal
blocks, shown in figure 14, to wire individual field de-
vice inputs to the multiplexer. The individual channel
connections are marked on the multiplexer case (i.e.,
1, 2, 3,...32).

Type 2530H1
12
2. The convention for field device input polarity is +
left, – right, for each input; however, the multiplexer is
insensitive to polarity.
3. Route individual wiring along field device wiring
(analog or digital, but no power) paths between the
field device termination panel and the multiplexer to
ensure HART signal integrity.
Connecting Field Devices to the
Multiplexer Using the Type HJ200
Junction Box (without HART Filters)
1. Remove one or more cage-clamp contact terminal
blocks, shown in figure 14, from the multiplexer and
plug them into the receptacles on the junction box.
Wire individual field device inputs to the terminal
blocks. The silk screen on the printed wiring board in-
dicates channel numbers. Channel numbers 1 through
16 designate the channel number if the interconnect-
ing cable between the junction box and the multiplexer
is connected to the 37-pin connector on the multiplex-
er labeled LOOPS 1-16. Channel numbers 17 through
32 designate the channel number if the interconnect-
ing cable between the junction box and the multiplexer
is connected to the 37-pin connector on the multiplex-
er labeled LOOPS 17-32. The wire pair from the field
device can be connected to any channel.
The convention for field device input polarity is + left, –
right, for each input; however, the multiplexer is insen-
sitive to polarity.
2. Connect the interconnecting cable between the
37-pin D-shell connector (P1) on the junction box and
one of the 37-pin D-shell connectors on the multiplex-
er.
3. Route individual wiring between the field devices
and junction box along other signal wiring (analog or
digital, but no power) paths between the control sys-
tem and the junction box to ensure HART signal integ-
rity.
Connecting a HART Communicator Using
the Type HJ200 Junction Box
The Type HJ200 HART junction box can serve as a
convenient connection point for communicating with a
field device with the handheld HART communicator. To
use the junction box as a connection point for a HART
communicator:
1. Mount the junction box as described in the Installa-
tion section.
2. Connect the filters or field devices to the multiplex-
er input terminals (shown in figure 14) as described in
the appropriate procedure in this manual.
3. Connect the interconnecting cable between the
37-pin D-shell connector (P1) on the junction box and
one of the 37-pin D-shell connectors on the multiplex-
er.
If the filters or field devices are connected to channels
1 to 16 on the multiplexer, connect the interconnecting
cable to the multiplexer connector labeled LOOPS
1-16. If the filters or field devices are connected to
channels 17 to 32 on the multiplexer, connect the in-
terconnecting cable to the multiplexer connector la-
beled LOOPS 17-32.
4. Terminate the cable from the HART communicator
with a 2-conductor plug (such as a Weidmuller part
number 152646 or equivalent) that fits the receptacles
on the junction box. To communicate with a field de-
vice, plug the HART communicator into the appropri-
ate channel on the junction box.
System Startup
Verifying Connections
WARNING
To avoid personal injury or property
damage from an uncontrolled process,
provide some temporary means of pro-
cess control before taking the loop out
of service.
1. Be sure the process is shut down, or there is some
temporary means of control before making connec-
tions to the field termination panel or Field Termination
Assembly.
2. Check to see that HART interchange multiplexer
connections, HART filter connections, and field ter-
mination connections are secure.
CAUTION
The HART interchange multiplexer will
not function properly and may exhibit
erratic LED illumination if insufficient
power is available.
3. Check to see that each HART interchange multi-
plexer is connected to a power source capable of pro-
viding 24 volts dc at 300 mA.
4. Check the RS485 connections to be sure connec-
tions are secure and properly connected to the
RS232-to-RS485 converter.
5. Apply power to the HART interchange multiplexers.

Type 2530H1
13
Verifying the Network Baud Rate
Note
After changing the switch positions on
the multiplexer or RS232-to-RS485 con-
verter, power to the device must be re-
moved and reapplied before the change
will become effective.
The HART interchange multiplexers, RS232-to-RS485
converter, and the ValveLink software all must com-
municate at the same rate for the network to function
properly. Setting the baud rate at 38.4K baud provides
the maximum data update rate.
The RS232-to-RS485 converter and HART inter-
change multiplexer are preset for a baud rate of 19.2k
baud. To select a 38.4k baud rate or to verify the
switch settings, refer to the appropriate switch setting
paragraph in the Installation section of this manual.
To verify the baud rate of the ValveLink software:
1. Start up the software by double clicking on the Val-
veLink icon.
2. At the logon display, enter a username and pass-
word for a user that has access to preferences.
3. From the menu bar, select Setup. Select Prefer-
ences from the menu.
4. If the Comm Ports page is not displayed, click on
the Comm Ports tab to display the page.
5. Select the one or two comm ports that have the
converters and multiplexers connected to them by
placing an X in the check box. Place an X in a check
box by clicking on the check box. To remove an X in a
check box, click on the check box to turn the X off.
6. Select either 9600 baud, 19.2k baud or 38.4k baud
by clicking on the appropriate option button. The 38.4K
baud selection is recommended.
7. Click on the Save button to save all selections. To
make these selections effective, exit the ValveLink
software and restart the application.
Verifying the HART Interchange
Multiplexer Addresses
Note
After changing the multiplexer switch
positions, power to the multiplexer must
be removed and reapplied before the
change will become effective.
There are 32 available addresses for the HART inter-
change multiplexer, 0 through 31. Be sure no two mul-
Figure 17. M1000 Series RS232 to RS485 Converter Front
Panel Showing LED Indicators and Power Switch
W6482/IL
tiplexers have the same address. To verify the multi-
plexer addresses:
1. Remove power from the multiplexer.
2. Verify the addresses by comparing the settings of
switches 1 through 5 with the settings listed in table 3.
Make any necessary changes to the switch settings.
3. Apply power to the multiplexer.
Verifying the RS485 Network
The RS485 network must be less than 3000 feet
(914.4 m) if one RS232-to-RS485 converter is used. If
the network is greater than 3000 feet (914.4 m), a se-
cond converter can be used as a repeater. Refer to
the converter manual for information on using the con-
verter as a repeater.
Be sure a 100 ohm resistor is connected across the A
and B terminals of the last multiplexer in the network.
Reading the Converter LED Indicators
The RS232-to-RS485 converter has three LEDs on
the front panel as shown in figure 17. In normal opera-
tion the LED configuration is as follows:
The LED labeled POWER is normally on indicat-
ing adequate power supply voltage is applied to the
converter.
The LED labeled TRANSMIT illuminates as data
is transmitted from the host computer onto the RS485
network. This LED will vary in intensity as the comput-
er communicates over the network.
The LED labeled FAULT illuminates if excessive
current is being drawn from the internal +24 Vdc, 1
Amp power supply. This LED should normally be off.
Reading the Multiplexer LED Indicators
The HART interchange multiplexer has three LEDs as
shown in figure 18. In normal operation the LED con-
figuration is as follows:

Type 2530H1
14
The amber POWER ON LED is continuously lit.
The green RUN LED flashes during initialization
after power application or while the host computer is
scanning the multiplexer.
The red FAULT LED lights momentarily during
initialization and when a fault is detected.
After power application and on command from the
host computer, the HART interchange multiplexer per-
forms a self-test. After the test is complete, the config-
uration of the lights will indicate if a fault exists:
None of the LEDs lit indicates no power or low
voltage
If all LEDs flash in sequence, the HART inter-
change multiplexer is in test mode. To remove the unit
from test mode:
c. Move DIP switch eight to the off position.
d. Remove power from the multiplexer.
e. Re-apply power to the multiplexer
All three LEDs flashing together indicate a seri-
ous fault. Return the unit for service.
All three LEDs lit continuously indicates a serious
fault. Return the unit for service.
Figure 18. HAR T Interchange Multiplexer LED Indicators
W6485/IL
FAULT RED
POWER ON AMBER
RUN GREEN
Service
Service support for the HART interchange multiplexer,
cabling, and configuration software is obtained through
your local Fisher-Rosemount Service Center. Contact
the Fisher-Rosemount office in your area for the loca-
tion of the nearest service center.
For questions about HART interchange multiplexers,
call the Fisher-Rosemount National Response Center
at 800-654-7768.
For information, contact Fisher Controls:
Marshalltown, Iowa 50158 USA
Cernay 68700 France
Sao Paulo 05424 Brazil
Singapore 0512
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 
Printed in U.S.A.