Contents
HP E1343A/44A/45A/47A Relay Multiplexer User’s Manual
Edition 5
Warranty ................................................ ......... ......... ......... ......... ......... ......... ......... ........5
Safety Symbols.............................................................................................................6
WARNINGS.................................................................................................................6
Declaration of Conformity............................................................................................7
Reader Comment Sheet ................................................................................................9
Chapter 1
Getting Started .............................................................................................................11
Using This Chapter.....................................................................................................11
Multiplexer Module Description ................................................................................11
General Description .............................................................................................11
Multiplexer Channel Descriptions and Connections ...........................................11
Programming the Multiplexer Module .......................................................................14
Selecting Channels ..............................................................................................14
SCPI Command Format Used in This Manual ....................................................16
Initial Operation..........................................................................................................17
Chapter 2
Configuring the Relay Multiplexer Modules ............................................................19
Warnings and Cautions...............................................................................................19
Connecting Field Wiring ............................................................................................20
Wiring Guidelines ...............................................................................................20
Wiring a Terminal Module.........................................................................................21
Connecting the Analog Bus........................................................................................22
Setting the Card ID.....................................................................................................23
Setting the Logical Address Switch............................................................................23
Using the Multiplexer Module with an HP Mainframe or Command Module .......... 24
Using the Scanning Voltmeter Configuration .....................................................24
Using the Switchbox Configuration ....................................................................25
Verifying Correct Logical Address Settings .......................................................25
Selecting the Interrupt Priority ...................................................................................26
5 Volt Excitation for Strain Gages..............................................................................27
Adding Signal Conditioning Components/Current Shunts.........................................27
Connecting User Inputs ..............................................................................................29
Chapter 3
Using the Relay Multiplexer Modules ........................................................................31
Using This Chapter.....................................................................................................31
Multiplexer Commands..............................................................................................31
Connecting Switchbox Channels to Common............................................................32
Connecting Switchbox Channels to Tree Terminals for Making Measurements.......34
Scanning a Range of Switchbox Channels.................................................................36
Measuring Temperature Using Thermocouples
(HP E1344A/47A Modules Only)............................................................................39
Contents 1
Chapter 4
Understanding the Relay Multiplexer Modules ........................................................41
Using This Chapter.....................................................................................................41
Commands for Scanning Switchbox Channels...........................................................41
Using Scanning Trigger Sources ................................................................................41
Scanning with External Instruments ...................................................................41
Using the Scan Complete Bit......................................................................................46
Chapter 5
Relay Multiplexer Command Reference ...................................................................47
Using This Chapter.....................................................................................................47
Command Types.........................................................................................................47
Common Command Format ............................................... .................................47
SCPI Command Format ......................................................................................47
Linking Commands .............................................................................................49
SCPI Command Reference.........................................................................................49
ABORt........................................................................................................................50
ARM ...........................................................................................................................51
:COUNt ............................................................................................................... 51
:COUNt? ..............................................................................................................52
DISPlay.......................................................................................................................53
:MONitor:CARD ................................................................................................. 53
:MONitor[:STATe] ............................................................................................. 54
INITiate.......................................................................................................................55
:CONTinuous ...................................................................................................... 55
:CONTinuous? ....................................................................................................56
[:IMMediate] ....................................................................................................... 56
OUTPut....................................................................................................................... 57
[:STATe] ............................................................................................................. 57
[:STATe]? ............................................................................................................57
[ROUTe:]....................................................................................................................58
CLOSe ................................................................................................................. 58
CLOSe? ............................................................................................................... 59
OPEN ..................................................................................................................59
OPEN? .................................................................................................................60
SCAN .................................................................................................................. 60
SCAN:MODE .....................................................................................................61
SCAN:MODE? ....................................................................................................62
SCAN:PORT ....................................................................................................... 62
STATus ....................................................................................................................... 63
:OPERation:ENABle ...........................................................................................63
:OPERation[:EVENt]? ........................................................................................ 64
SYSTem...................................................................................................................... 65
:CDEScription? ................................................................................................... 65
:CPON ................................................................................................................. 66
:CTYPe? .............................................................................................................. 66
:ERRor? ............................................................................................................... 67
TRIGger ...................................................................................................................... 68
2 Contents
[:IMMediate] ....................................................................................................... 68
:SOURce ..............................................................................................................69
:SOURce? ............................................................................................................70
IEEE 488.2 Common Commands...............................................................................71
Command Quick Reference........................................................................................72
Appendix A
16-Channel Relay Multiplexer Specifications ...........................................................73
HP E1343A/44A 16-Channel Relay Multiplexer.......................................................73
HP E1345A/47A 16-Channel Relay Multiplexer.......................................................74
Relay Life ...................................................................................................................75
End of Life Detection .................................................................................................75
Replacement Strategy.................................................................................................75
Appendix B
16-Channel Relay Multiplexer Registers ...................................................................77
Register Addressing ............................................................................................77
Computer Configurations ....................................................................................78
Reading the Registers ..........................................................................................81
Writing to the Registers .......................................................................................82
Register Definitions .............................................................................................83
Appendix C
16-Channel Relay Multiplexer Error Messages ........................................................85
Index ................................................................................................................................87
Contents 3
4 Contents
Certification
Hewlett-Packard Company certifies that this product met its published specifications at the time of shipment from the factory. HewlettPackard further certifies that its calibration measurements are traceable to the United States National Institute of Standards and
Technology (formerly National Bureau of Standards), to the extent allowed by that organization’s calibration facility, and to the
calibration facilities of other International Standards Organization members.
Warranty
This Hewlett-Packard product is warranted against defects in materials and workmanship for a period of three years from date of shipment.
Duration and conditio ns of wa rrant y for this p roduc t may be su perseded when the pro duc t is integra ted in to (be come s a part o f) other HP
products. During the warranty period, Hewlett-Packard Company will, at its option, either repair or replace products which prove to be
defective.
For warranty service or repai r, this produc t must be return ed to a service facility design ated by Hewlett-Pa ckard (HP). Bu yer sha ll prep ay
shipping charges to HP and HP shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping charges,
duties, and taxes for products returned to HP from another country
HP warrants that its software and firmware designated by HP for use with a product will execute its programming instructions when
properly installed on that product. HP does not warrant that the operation of the product, or software, or firmware will be uninterrupted
or error free.
Limitation Of Warranty
The foregoing warranty sh all not ap ply to defect s resulting from improper o r inadequate m aintenanc e by Buye r, Buyer-suppl ied products
or interfacing, unauthorized modification or misuse, operation outside of the environmental specifications for the product, or improper
site preparation or mainte na n ce.
The design and implementation of any circuit on this product is the sole responsibility of the Buyer. HP does not warrant the Buyer’s
circuitry or malfunctions of HP products that resu lt from the Buyer’s ci rcuitry. In addition, HP does not warrant any damage that occurs
as a result of the Buyer’s circuit or any defects that result from Buyer-supplied products.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Exclusive Remedies
THE REMEDIES PROVIDED HEREIN ARE BUYER’S SOLE AND EXCLUSIVE REMEDIES. HP SHALL NOT BE LIABLE FOR
ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT,
TORT, OR ANY OTHER LEGAL THEORY.
Notice
The information contained in this document is subject to change without notice. HEWLETT-PACKARD (HP) MAKES NO
WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. HP shall not be liable for errors
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U.S. Government Restricted Rights
The Software and Documentation have been developed entirely at private expense. They are delivered and licensed as "co mmercial
computer software" as defined in DFARS 252.227- 7013 (Oct 1988), DFARS 252.211-7015 (May 1991) or DFARS 252.227-7014 (Jun
1995), as a "commercial item" as defined in FAR 2.101(a), or as "Restricted computer software" as defined in FAR 52.227-19 (Jun
1987)(or any equivale nt agency regulation or cont rac t cla u se), whichever is applicable . You ha ve on ly tho s e rights pr o vid ed for such
Software and Documentation by the applicable FAR or DFARS clause or the HP standard s oft ware agreement for the product involved
HP E1343A/44A/45A/47A User’s Manual
Edition 5
Copyright © 1997 Hewlett-Packard Company. All Rights Reserved.
5
Documentation History
All Editions and Updates of this m anual and the ir creati on date are list ed belo w. The first Edi tion o f the man ual is E dition 1. The Edition
number increments by 1 whenever the manual is revised. Updates, which are issued between Editions, contain replacement pages to
correct or add additional information to the current Edition of the manual. Whenever a new Edition is created, it will contain all of the
Update information for the previous Edi tion. Each ne w Edition or Upd ate also incl udes a revised copy of this d ocumentation h istory page.
Edition 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .September 1989
Update 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .September 1990
Edition 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .July 1992
Edition 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April 1993
Edition 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .May 1995
Edition 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . April 1997
Safety Symbols
Instruction manual symbol affixed to
Instruction manual symbol affixed to
product. Indicates that the user must refer to
product. Indicates that the user must refer to
the manual for specific WARNING or
the manual for specific WARNING or
CAUTION information to avoid personal
CAUTION information to avoid personal
injury or damage to the product.
injury or damage to the product.
Indicates the field wiring terminal that must
be connected to earth ground before
operating the equipme nt—protects against
electrical shock in case of fault.
WARNING
Alternating current (AC)
Direct current (DC).
Indicates hazardous voltages.
Calls attention to a procedure, practice , or
condition that could cause bodily injury or
death.
or
Frame or chassis ground terminal—typically
connects to the equipment' s metal frame.
CAUTION
Calls attention to a procedure, practice , or
condition that could p ossibly cause damage to
equipment or permanent loss of data.
WARNINGS
The following general safety precautions must be observed during all phases of operation, service, and repair of this product. Failure to
comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, manufacture, and
intended use of the product. Hewlett-Packa rd Company assumes no liab ility for the customer's failure to comply with these requirements.
Ground the equipment: For Safety Class 1 equipment (equipment having a protective earth terminal), an uninterruptible safety earth
ground must be provided from the mains power source to t he pr oduct input wiring terminals or supplied power cable .
DO NOT operate the product in an explosive atmosphere or in the presence of flammable gases or fumes.
For continued protection against fire, replace the line fuse(s) only with fuse(s) of the same voltage and current rating and type. DO NOT
use repaired fuses or short-circuited fuse holders.
Keep away from live circuits: Operating personnel must not remove equipment covers or shields. Procedures involving the removal of
covers or shields are for use by service-trained personnel only. Under certain conditions, dangerous vol tages may exist even with the
equipment swi tched off . To avoid da ngerous el ectrica l shock, DO N OT perform procedure s involvin g cover or sh ield remova l unless you
are qualified to do so.
DO NOT operate damaged equipmen t: Whenever it is possible that the safety protection features built into this product have been
impaired, either through physical damage, excessive moisture, or any other reason, REMOVE POWER and do not use the product until
safe operation can be verified by service-trained personnel. If necessary, return the product to a Hewlett-Packard Sales and Service Office
for service and repair to ensure that safety features are maintained.
DO NOT service or adjust alone: Do not attempt internal service or adjustment unless another person, capable of rendering first aid and
resuscitation, is present.
DO NOT substitute parts or modify equipment: Because of the dange r of introd ucing addi tional h azards, do not install substitute parts
or perform any unauthorized mod ification to the product. Return the product to a Hewlett-Packard Sales and Service Office for service
and repair to ensure that safety features are maintained.
6
Declaration of Conformity
according to ISO/IEC Guide 22 and EN 45014
Manufacturer’s Name: Hewlett-Packard Company
Loveland Manufacturing Center
Manufacturer’s Address: 815 14th Street S.W.
Loveland, Colorado 80537
declares, that the product:
Product Name: 16-Channel Relay Multiplexer Modules
Model Number: HP E1343A/44A/45 A /47A
Product Options: All
conforms to the following Product Specifications:
Safety: IEC 348:1978/HD 401 S1:1981
CSA 556B
UL 1244
EMC: CISPR 11:1990/EN55011 (1991): Group 1 Class A
EN50082-1:1992
IEC 801-2:1991: 4kVCD, 8kVAD
IEC 801-3:1984: 3 V/m
IEC 801-4:1988: 1kV Power Line, 0.5kV Signal Lines
Supplementary Information: The product herewith complies with the requirements of the Low Voltage Directive
73/23/EEC and the EMC Directive 89/336/EEC (inc lusive 89/336/EEC) and carries the "CE" mark ing accordingly.
Tested in a typical configuration in an HP B-Size VXI mainframe.
Safety qualification performed May, 1989.
September 5, 1996
European contact: Your local Hewlett-Packard Sales and Service Office or Hewlett-Packard GmbH, Depart-
ment HQ-TRE, Herrenberger Straße 130, D-71034 Böblingen, Germany (FAX +49-7031-14-3143)
Jim White, QA Manager
7
Notes:
8
Pl
ease fold and tape for ma
ili
ng
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HP E1343A/44A/45A/47A User’s Manual
Edition 5
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Using This Chapter
This chapter describes the HP E1343A 16-Channel High Voltage Relay,
E1344A 16-Channel General Purpose Thermocouple High Voltage Relay,
E1345A 16-Channel Relay, and HP E1347A 16-Channel Thermocouple
Relay Multiplexer Modules, and shows how to program the modules using
SCPI commands (Standard Commands for Programmable Instruments).
This chapter contains the following sections:
• Multiplexer Module Description. . . . . . . . . . . . . . . . . . . . . . page 11
• Programming the Multiplexer Module . . . . . . . . . . . . . . . . . page 14
• Initial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 17
Multiplexer Module Description
Refer to Figure 1-1 for the following explanations of all four 16-Channel
Relay Multiplexer Modules.
Chapter 1
Getting Started
General Description The multiplexer module switches (multiplexes) up to 16 channels. Each
channel provides High (H), Low (L), and Guard (G) connections.
The multiplexer module consists of a component assembly and a terminal
module. The channel relay switches are on the component assembly. The
field wiring from us er sources (e.g., t hermocouples) connects to the terminal
module. The terminal module also provides connections for multimeters,
voltmeters, counters, and other measuring devices.
Multiplexer
Channel
Descriptions and
Connections
The channel relay switches are separated into two banks, Bank 0 and
Bank 1. Channels 00 to 07 are in Bank 0 and channels 08 to 15 are in
Bank 1. Each bank has it s own H, L, and G Common terminal s to which the
channel switches connect.
The channel switches also connect, through the AT and BT Tree Switches,
to the AT and BT Tree Switch Termin als, respectively. The Bank 0 channels
connect to the AT Tree Switch Ter minals and the Bank 1 channels co nnec t
to the BT Tree Switch Terminals. An additional tree switch, the AT2 Tree
Switch, provides connection of the Bank 1 channels to AT Tree Switch
Terminals. Use channel numbers 90, 91, and 92 to select the AT, BT, and
AT2 Tree Switches, respectively.
Connecting to th e Tree Switch Te rminals is the prefer red method t o connect
measuring devices, like multimeters, to measure the multiplexer channels.
This allows you to connect the measuring device to either the Bank 0 or
Bank 1 channels at any given time, or to the channels of both banks.
Getting Started 11Chapter 1
The AT Tree Switch Terminals also conn ect to the H, L, and G connect ions
on the Analog Bus Con nector. Th e BT Tree Swi tch Termin als al so connect
to the I+, I-, and IG connec tions on the Analog Bus Conne ctor. The Analo g
Bus Connector provides direct channel connections between multiple
multiplexer modules, and connections between a multiplexer module and
the HP E1326/E1411 Multimeters. Cables make the necessary connections
without the need to exter nally wire the multimeter /multi plexer modules vi a
the terminal modules.
The 16-Channel Thermocouple Relay Multiplexer Modules (HP E1344A
and E1347A) uses the RT Tree Switch (Channel 93) to connect the
thermistor on the terminal module to the Bank 1 channel common. The
thermistor can be measured to determine the temperature inside of the
terminal module to compensate for temperature measurements made with
thermocouples (see Chapter 3).
Each channel High (H) line has a jumper on the terminal module that may
be removed to add filter components (see Chapter 2 under the “Adding
Signal Conditioning Components/Current Shunts” heading). Each Bank 0
and Bank 1 common line, t he AT a nd BT Tree Switch, and the Analog Bus
lines all have 100 ohm resistors in series with each line. The resistors
provide relay protection and are located on the component module.
12 Getting Started Chapter 1
Figure 1-1. Multiplexer Module Block Diagram
Getting Started 13Chapter 1
Programming the Multiplexer Module
The multiplexer modules are programmed either in a switchbox or s canning
voltmeter configuration. To program the multiplexer modules using the
Standard Commands for Pro grammable Instruments (SCPI), you must sele ct
the controller language, interface address, and SCPI commands to be used.
See the HP 75000 Series B Installation and Getting Started Guide or the
HP E1406 Command Module Manual for interface addressing and
controller language information of multiplexer modules in a switchbox or
scanning voltmeter configuration. If using the HP E1300 Mainframe or
HP E1405 Command Module, you MUST have version 06.00 (or
greater) firmware for the Mult iplexer Modules to properly identify.
Note This discussion applies to SCPI programming. See Appendix B
(“16-Channel Relay Multiplexer Registers”) for details on multiplexer
modules registers.
Selecting Channels To address specific channels wit hin a multiple xer module in a s witchbo x or
scanning voltmeter configuration, you must:
•send the appropriate SCPI command string to the switchbox or
scanning voltmeter (e.g.,
CLOSe, OPEN, etc.)
Multiplexer Card
Numbers
•specify the card number
•specify the channel number
The card number identifies the module within a switchbox or scanning
voltmeter configura tion. The swi tch module wi th the lo west lo gical addres s
is always card number 01 . The card numb er with the ne xt successi ve logical
address is 02, and so on. Figure 1-2 illustrates the card number and logical
address of a typical single module switchbox.
Figure 1-2. Card Numbers for a Single Module Switchbox
14 Getting Started Chapter 1
Figure 1-3 illustrates the card numbers and logical addresses of a typical
multiple module switchbox. Figure 1-4 illustrates the card numbers of a
typical multiple module scanning voltmeter.
Figure 1-3. Card Numbers for a Multiple Module Switchbox
The logical addresses noted in Figures 1-2, 1-3, and 1-4 apply to modules
installed in an HP 75000 Series B Mainframe (HP Model Number
E1300/E1301) or in a mainframe with an HP E1405/E1406 Command
Module. See the HP 75000 Series B Installatio n and Getting St arted Gui de
or the HP E1406 Command Module Manual for more information on
switchboxes and sca nning voltmete r configurati ons, and logic al addressi ng.
If using the HP E1300 Mainframe or HP E14 05 Command Module, you
MUST have version 06.00 (or greater) firmware for the 16-Channel
Multiplexer M odules to properly identify. For uses in other systems or
mainframes, see the appropriate manuals.
Figure 1-4. Card Numbers for a Multiple Module Scanning Voltmeter
Getting Started 15Chapter 1
Multiplexer Channel
Address
For the 16-Channel Multiple xers, the channel address ( channel_list) is in th e
form:
n
(@ccnn) for a single channel;
n
(@ccnn,ccnn) for mu ltiple channels;
n
(@ccnn:ccnn) for sequential channels;
n
(@ccnn:ccnn,ccnn:ccnn) for groups of sequential channels;
n
or any combination of the above.
where "cc" is the card number and "nn" is the channel number.
For example, the command string to close channel 02 of card number 1 is:
CLOSe (@0102)
Since "cc" (the card number) must be sent, it becomes part of the channel
number. Also, you can ignore leading zeros in the card numbers. Thus, to
close channel 02, send "1 02" instead of "0102". To close the above channel,
execute:
CLOSe (@102)
SCPI Command
Format Used in This
Manual
You can send SCPI commands in either a short or long form. A long form
example is:
CLOSe (@102)
The same command shown without the lower case letters is the sh ort for m.
The command then becomes:
CLOS (@102)
Some commands in this manual are shown with brackets ([ ]). These are
implied or optio nal commands that you d o not have to execu te. For example,
ROUT command is an implied command and is shown i n this manual as:
the
[ROUT:]CLOS (@102)
Thus, to execute these commands, simply enter:
CLOS (@102)
See Chapter 5 for more expl anation about SCPI commands and how t o send
them.
16 Getting Started Chapter 1
Initial Operation
Use the following program examp le to verify initial multiplexer operation
by closing a channel and q uerying ch annel clos ure. The exampl e first resets
the switchbox and then closes channel 02 of a single multiplexer module
(card number 1) in the switchbox. The program next queries the channel
closure state. A returned "1" shows that the command to close the channel
has been sent to the switchbox. A returned "0" shows that the command to
close the channel has not been sent to the switchbox.
The computer used in the example is an HP Series 200/300 computer with
HP BASIC as the program language. The computer interfaces to the
mainframe us ing the Hewlett-Pac kard Interface Bus (HP-IB)
1
. The HP-IB
interface select code is 7, the HP-IB primary address is 09, and the HP-IB
secondary address is 14. Refer to the HP 75000 Series B Installation and
Getting Started Guide for addressing information.
Example: Reset the switchbox and close channel 02
10 OUTPUT 70914;"*RST"
20 OUTPUT 70914;"CLOS (@102)"
30 OUTPUT 70914;"CLOS? (@102)"
40 ENTER 70914;Value
50 PRINT Value
60 END
Opens all channels.
Close channel 02.
Query channel 02 state.
Enter results into Value.
Display result.
1. HP-IB is Hewlett-Packard’s implementation of IEEE Std 488.1-1984
Getting Started 17Chapter 1
Notes:
18 Getting Started Chapter 1
Chapter 2
Configuring the Relay Multiplexer Modules
This chapter shows h ow to connect ext ernal wiring to the 16-Channel Relay
Multiplexer Modules, and how to configure them:
• Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 19
• Connecting Field Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . page 20
• Wiring a Terminal Module . . . . . . . . . . . . . . . . . . . . . . . . . . page 21
• Connecting the Analog Bus . . . . . . . . . . . . . . . . . . . . . . . . . page 22
• Setting the Card ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23
• Setting the Logical Address Switch . . . . . . . . . . . . . . . . . . . page 23
• Using the Multiplexer Module with an HP Mainframe or Command
Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 24
• Selecting the Interrupt Priority . . . . . . . . . . . . . . . . . . . . . . . page 26
• 5 Volt Excitation for Strain Gages . . . . . . . . . . . . . . . . . . . . page 27
• Adding Signal Conditioning Components/Current Shunts. . page 27
• Connecting User Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
Warnings and Cautions
WARNING SHOCK HAZARD. Only service-trained personnel who are aware of
the hazards involved should install, remove, or configure the
modules. Before installing any module, disconnect AC power from the
mainframe and from user wiring.
T o prevent electrical shock, all wires to the channel connections must
be insulated to at least 120 Vrms (170 V peak).
Caution MAXIMUM VOLTAGE/CURRENT. Maximum voltage that may be
applied between High (H), Low (L), and Guard (G) terminals is 170 V
dc or 120 V rms (170 V peak) for the E1345A/47A or 250 V dc or AC
RMS (354 V peak) for the E1343A/44A. Maximum current is 50mA
(non-conductive) per channel.
STATIC ELECTRICITY. Static electricity is a major cause of
component failure. T o prevent damage to the electrical component s in
the multiplexer module, observe anti-static techniques whenever
removing a module from the mainframe or whenever working on a
module.
Configuring the Relay Multiplexer Modules 19Chapter 2
Connecting Field Wiring
Figure 2-1 shows the terminal module for the 16-Channel High Voltage
Relay (HP E1343A), 16-Chann el Relay (HP E1345A), 1 6-Channel General
Purpose Thermocouple High Voltage Relay (HP E134 4A), and 16 -Channel
Thermocouple Relay Mult iplexer Modules (HP E1347A). Us e the following
guidelines for wire connections.
Wiring Guidelines •If possible, use shi elded ca bles wit h the sh ields c onnected to the Gu ard
(G) terminals and to the low connection near the measurement point.
•Be sure the wires make good connections on the screw terminals.
•For thermocouples, connect the Guard terminal to the thermocouple’s
shield lead and the low connection near the measurement point.
Figure 2-1. Multiplexer Modules Connector Blocks
20 Configuring the Relay Multiplexer Modules Chapter 2
Wiring a Terminal Module
Configuring the Relay Multiplexer Modules 21Chapter 2
Connecting the Analog Bus
Figure 2-2 shows how to connect the analog bus between multiple
multiplexer modules and to the HP E1326 Multimet er. Use the cables
shipped with the multiplexer modules to connect the analog bus of the
multiplexer modules. Use the ca ble sh ipped wi th the HP E13 26 Multi meter
to connect the analog bus of the multiplexer module to the Multimeter input.
These cables are needed to connect the MUX when mounted in the E1403
Module Carrier to the E1 411A/B DMM in a C- size cardc age. They must be
ordered separately.
1. Connecting E1411 to RELAY MUXs: use E1326-61611
(long analog bus cable).
2. Connecting RELAY to RELAY or RELAY to FET MUX:
use E1400-61605.
Figure 2-2. Analog Bus Connections Between Multiplexer/Multimeter Modules
22 Configuring the Relay Multiplexer Modules Chapter 2
Setting the Card ID
The Card ID Ju mpers indicate which terminal assembl y is used. Since the
HP E1343-66201 and E1345-66201 assembly is used with a variety of
terminal modules, the ID jumper s may be changed. To reduce setup time and
avoid configuration errors, check the jumpers to make sure they match the
terminal module used.
When the relay multiplexers are shipped from the factory, the Card ID
Jumpers are set according to the terminal module (E1343/44/45/47/55/56)
shipped with them. The system is able to identify the multiplexer with or
without the terminal module attached.
Note If the jumper setting does not match the terminal module attached, the
system will identify the card based on the jumper setting.
Setting the Logical Address Switch
The address switch (LADDR) factory setti ng is 112. You may have changed
the setting during module installation. Valid address values are from 0 to
255. Refer to the HP 75000 Series B System Installation and Getting Star ted
Guide or the HP E1406 Command Module Manual for addressing
information. Otherwise, to change the setting, refer to the Figure 2-3.
Figure 2-3. Locate and Set the Logical Address Switch
Configuring the Relay Multiplexer Modules 23Chapter 2
Using the Multiplexer Module with an HP Mainframe or
Command Module
To program the multiplexer modules with an HP E1300A/01A Mainframe
or an HP E1405B/E1406A Command Module, the modules must be
configured as an instrument. If using the HP E1300 Mainframe or
HP E1405 Command Module, you MUST have version 06.00
(or greater) firmware for the 16-Channel Multiplexer Modules to
properly identify. An instrument configuration for the multiplexer
modules must be a:
•Scanning Voltmeter - Used with an HP E1326B/E1411A Multimeter.
•Switchbox - Used with other switch type modules, like other
multiplexer mod ules, etc.
(The above requirements are not necessary if using register-based
programming to program the modules.)
Using the Scanning
Voltmeter
Configuration
Use this configuration for:
1. Easiest system programming.
2. Fastest execution speed.
3. Thermocouple measurements if using the HP E1326B/E1411B
temperature function.
To use this configuration, set the multimeter’s logical address to a multiple
of 8. Also set the first multiplexer module’s logical address to the next
address value, the second module to the next address value, and so on. The
following shows the logical address settings of a Scanning Voltmeter with
the multimete r address set to 24.
Logical Address Module Channels
24 HP E1326B/E1411A N/A
25 HP E1345A/E1347A 100-115
26 HP E1345A/E1347A 200-215
To program the scanning volt meter, use the programming i nformation in the
appropriate multimeter manual.
24 Configuring the Relay Multiplexer Modules Chapter 2
Using the
Use this configuration when:
Switchbox
Configuration
Verifying Corr ect
Logical Address
Settings
1. Simultaneously closing multiple channels on multiple modules.
2. Other multimeters/modules cannot control the multiplexer modules.
To use this configuration, set the first multiplexer module’s logical address
to a multiple of 8. Set the next multiplexer module’s logical address to the
next address value, the third module to the next address value, and so on.
The following shows the logical address settings of a switchbox with the
first multiplexer module address set to 112.
Logical Address Module Channels
112 HP E1345A/E1347A 100-115
113 HP E1345A/E1347A 200-215
114 HP E1345A/E1347A 300-315
To program the switch box, use the programmi ng information in this manual.
To verify that the modules have the correct logic al address set ting, query th e
HP E1300A/E1301A Mainframe or HP E1405B/E1406A Command
Module as follows:
HP E1301A Mainframe - From the “Select a Instrument” prompt of the
front panel, select the following menus:
SYSTEM
CONFIG?
LADDS
HP E1300A Mainframe, HP E1405B, or HP E1406A Command Module
with an RS-232 Terminal - Fro m the “Select an I nstrument” prompt, select
the following menus:
SYSTEM
CONFIG?
LADDS
If no front p anel or RS-232 ter minal is availabl e, send the following SCPI
query command to the mainframe/command module:
VXI:CONF:DLAD?
The returning string contains all logical addresses in the system.
Configuring the Relay Multiplexer Modules 25Chapter 2
Selecting the Interrupt Priority
The multiplexer modules generate i nterrupts a fter a channel relay closi ng or
opening completes. These interrupts set the selected line on the VXI
peripheral interrupt bus true.
The VXI peripheral interrupt bus consists of 7 interr upt priority lines that
carry the interrupt signal to the commander. Line 1 has the highest priority
and line 7 the lowest. The multiplexer module’s default s etting is line 1, since
it is the most commonly used interrupt line.
The HP E1300A/E1301A Mainframe default operation is to monitor all
seven interrupt line s. The HP E1405 B/E1406A Command Modul e’s default
operation is to manage only o ne line. The Command Module does, howeve r,
use an interrupt line allo cation table that al lows you to select which line s the
command module is to monitor. For e mbedded controllers, refer to the
appropriate controller documentation to determine which of the line(s) the
controller monitors.
When using an HP E1300A/E1301A Mainframe or HP E1405B/E1406A
Command Module for register-based programming (instead of the SCPI
driver) and where the program generates an interrupt, be sure to use the
multiplexer module’s interrupt line that does not interfere with the program.
Use the line th at is not used by the SCPI driver to generate interrupts.
Refer to Figure 2-4 to change t he interrupt priority. Unsolder and rem ove
two jumpers from the old priority location. Install the jumpers in the new
priority location (Figure 2-4 shows a priority change from 1 to 7).
Figure 2-4. Changing the Priority Interrupt Level Jumpers
26 Configuring the Relay Multiplexer Modules Chapter 2
5 Volt Excitation for Strain Gages
The E1345-66201 is used with a variety of terminal modules including the
E1355A and E1356A Strain Gage Multiplexers. When used with t hese strain
gages, the jumpers JM1 and JM2 may be installed to provide 5 volt
excitation to the strain gage b ridge. This volt age is fused a t 4A. Channel x93
is used to sense it.
Jumpers JM1 and JM2 must be removed when used with the E1347A
Thermocouple terminal module. This must be done because the connector
pins in this case are used to sense the 5k Ohm thermistor on the terminal
module.
When the relay multiplexer is shipped from the factory, the jumpers are not
installed.
Adding Signal Conditioning Co mponent s /Current Shunts
The multiplexer module’s ter minal module allows you to add co mponents on
each channel for:
-- Low-Pass Filters
-- Attenuators
-- Current Shunts (for current measurements using a voltmeter)
Figure 2-5 shows how to install the appropriate components for the above
configurations. In the figure, channel 12 shows a low pass filter
configuration, channel 07 an attenuator configuration, and channel 04 a
current shunt configuration.
Configuring the Relay Multiplexer Modules 27Chapter 2
Figure 2-5. Signal Conditioning Components/Current Shunts
28 Configuring the Relay Multiplexer Modules Chapter 2
Connecting User Inputs
The relay switch modules consist of a relay component module and a
connector (terminal ) block. If you choose not t o use the supplied con nec tor
block, Figure 2-6 sh ows the front panel for t he mo dul es and the connection
diagram for wiring your own terminal connector.
Figure 2-6. Relay Multiplexer Modules Front Panel and Connector Pinout
Configuring the Relay Multiplexer Modules 29Chapter 2
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