Allen-Bradley D Series User manual

Remote I/O Adapter Module
Cat. No. 1771ASB Series D
User Manual
Allen-Bradley PLCs

Because of the variety of uses for the products described in this
publication, those responsible for the application and use of this control
equipment must satisfy themselves that all necessary steps have been taken
to assure that each application and use meets all performance and safety
requirements, including any applicable laws, regulations, codes
and standards.
The illustrations, charts, sample programs and layout examples shown in
this guide are intended solely for example. Since there are many variables
and requirements associated with any particular installation, Allen-Bradley
does not assume responsibility or liability (to include intellectual property
liability) for actual use based upon the examples shown in this publication.
Allen-Bradley publication SGI–1.1, “Safety Guidelines For The
Application, Installation and Maintenance of Solid State Control”
(available from your local Allen-Bradley office) describes some important
differences between solid-state equipment and electromechanical devices
which should be taken into consideration when applying products such as
those described in this publication.
Reproduction of the contents of this copyrighted publication, in whole or
in part, without written permission of Allen–Bradley Company, Inc.
is prohibited.
Throughout this manual we make notes to alert you to possible injury to
people or damage to equipment under specific circumstances.
ATTENTION: Identifies information about practices or
circumstances that can lead to personal injury or death, property
damage or economic loss.
Attention helps you:
Identify a hazard.
Avoid the hazard.
Recognize the consequences.
Important: Identifies information that is especially important for
successful application and understanding of the product.
Important: We recommend you frequently backup your application
programs on appropriate storage medium to avoid possible data loss.
Important User Information

Summary of Changes
S-1
Summary of Changes
This release of the publication covers the series D Remote I/O Adapter
module (cat. no. 1771-ASB). The series D module has new firmware
which provides faster link turnaround time.
Updated Information
This release also includes information previously included in the following
release notes:
publication 1771-6.5.83–RN1 dated May 1992
publication 1771-6.5.83–RN2 dated July 1993
To help you find new and updated information in this release of the
publication, we have included change bars as shown to the right of this
paragraph.
Summary of Changes
Allen-Bradley PLCs

Summary of Changes S1. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using This Manual P1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preface Objectives P1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
What This Manual Contains P1
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audience P1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Terminology Used in This Manual P2
. . . . . . . . . . . . . . . . . . . . . . . .
Product
Compatibility P3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Related
Publications P4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary P4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introducing the Remote I/O Adapter Module 11. . . . . . . . . . .
Chapter Objectives 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Description and Features 11
. . . . . . . . . . . . . . . . . . . . . . . .
Hardware Components 12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary 13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing Y our Module 21. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Objectives 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Requirements 21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Module Location and Keying 21
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting the Module Configuration Plugs 22
. . . . . . . . . . . . . . . . . . . .
Setting the Module Switches 23
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting
the I/O Chassis Switches 29. . . . . . . . . . . . . . . . . . . . . . . . .
Setting the I/O Chassis Power Supply Configuration Plug 212
. . . . . . .
Wiring the Field Wiring Arm 212
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installing the Terminator 214
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compatibility
of 1771 Remote I/O Products with
Extended Node Numbers 214. . . . . . . . . . . . . . . . . . . . . . . . . . .
Module
Installation 215. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Addressing Modes for Your Remote I/O 31. . . . . . . . . . . . . . .
Chapter Objectives 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Addressing 31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Slot Addressing 33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Complementary
I/O with 2Slot Addressing 39. . . . . . . . . . . . . . . . . .
1Slot Addressing 313
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assigning I/O Rack Numbers with 1Slot Addressing 317
. . . . . . . . . . .
1/2 Slot Addressing 319
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Complementary
I/O with 1/2Slot Addressing 322. . . . . . . . . . . . . . . .
Mixing 1 and 2Slot Addressing in Individual Chassis 323
. . . . . . . . . . .
Table of Contents

Table of Contentsii
Acceptable Chassis Combinations 324. . . . . . . . . . . . . . . . . . . . . . . .
I/O Chassis/Adapter Module Combinations 325
. . . . . . . . . . . . . . . . . .
Summary 325
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter Objectives 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting With the Indicator Lights 41
. . . . . . . . . . . . . . . . . . .
Summary 43
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications A1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Settings for 1771-AS and 1771-ASB
Series A, B and C Remote I/O Adapters B1. . . . . . . . . . .
General Information B1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Allen-Bradley PLCs

Preface
P-1
Using This Manual
Read this preface to familiarize yourself with this manual and to learn how
to use it properly and efficiently.
The contents of this manual are as follows:
Table P.A
What
This Manual Contains
Chapter Title What's Covered
1Introducing the Remote I/O Adapter
Module
Describes features, capabilities, and hardware
components.
2Installing Your Module Procedures and guidelines for installing the module
3Configuring Your Remote I/O Hardware addressing and configuration options
4 Troubleshooting Troubleshooting aids
Appendix
A Specifications Module specifications
BSettings for 1771-AS and -ASB/A
and B
Comparable switch settings and keying information for
older adapters
We assume that you have previously used an Allen–Bradley programmable
controller, that you are familiar with its features, and that you are familiar
with the terminology we use. If not, read the user manual for your
processor before reading this manual.
Preface Objectives
What This Manual Contains
Audience

Preface
Using This Manual
P-2
The following list defines common terms used in this manual.
Complementary I/O: An I/O technique that allows a PC to interface with
an input and output module using the same location address in different I/O
chassis.
Complementary Module: A module that performs an opposite function;
an input module complements an output module and vice versa.
Standard–Density I/O Module: A module that provides up to 8 input
terminals or 8 output terminals.
High–Density I/O Module: A module that provides 16 input or 16 output
terminals.
Quad–Density I/O Module: A module that provides 32 input or 32 output
terminals.
I/O Group: An addressing unit that can contain up to 16 input terminals
and 16 output terminals.
PC: An Allen–Bradley programmable controller, such as the PLC–5.
Processor: A term used to mean an Allen–Bradley programmable
controller.
Half–Slot Addressing: A method of addressing where the processor can
address its I/O in 1/2–slot I/O groups.
One–Slot Addressing: A method of addressing where the processor can
address its I/O in 1–slot I/O groups.
Two–Slot Addressing: An method of addressing where the processor can
address its I/O in 2–slot I/O groups.
Terminology Used in This
Manual
Allen-Bradley PLCs

Preface
Using This Manual
P-3
The remote I/O adapter module is one of many hardware components that
make up a programmable controller system. Table P.B lists the hardware
components and products with which you can use the adapter module.
Table P.B
Compatible
Hardware Products
Product name Description Catalog number
Processors PLC-2/20 Programmable Controller
PLC-2/30 Programmable Controller
PLC-3 Programmable Controller System
PLC-5 Programmable Controller Family
PLC-5/250 Programmable Controller (Pyramid Integrator)
1772-LP1, -LP2
1772-LP3
1775-L3
1785-LT, -LT2, 6008-LTV
5250-LP
I/O Scanners Remote I/O Scanner/Distribution Panel for PLC-2 Family Processors
I/O Scanner-Programmer Interface Module for PLC-3 Family
Processors
I/O Scanner-Message Handling Module for PLC-3 Family Processors
VMEbus I/O Scanner
IBM PC I/O Scanner
Q-bus PC I/O Scanner
Sub-I/O Scanner
Pyramid Integrator Remote I/O Scanner
1772-SD, -SD2
1775-S4A, -S5
1775-S4B, -GA
6008-SV
6008-SI
6008-SQ
1771-SN
5150-RS
Universal I/O
Chassis
4-slot
8-slot
12-slot
16-slot
1771-A1, -A1B
1771-A2, -A2B
1771-A3B, A3B1
1771-A4, -A4B
I/O Modules Block transfer modules
8-point I/O Standard density I/O modules
16-point I/O High density I/O modules
32-point I/O Quad-Density I/O modules
Block I/O modules (cat. no. 1791)
All modules that use the 1771
I/O structure
Adapter modules Remote I/O Adapter Module (can mix 1771-ASB/B and 1771-AS in
same remote system - limited to 115.2k Baud or less)
1771-AS
Power Supplies System power supply
Auxiliary power Supply
Auxiliary Power Supply module (120V AC input, 3A)
Auxiliary Power Supply module (120V AC input, 8A)
Redundant Power Supply module
Auxiliary Power Supply module (24V DC input, 8A)
Auxiliary Power Supply module (220/240V AC input, 8A)
Auxiliary Power Supply module (120/220V AC input, 16A)
PLC-2 Power Supply (115V AC input)
PLC-2 Power Supply (24V DC input)
Local Power Supply
PLC-3 Power Supply
Auxiliary Power Supply (24V DC input)
1771-P1
1771-P2
1771-P3
1771-P4, -P4S, -P4S1
1771-P4R
1771-P5
1771-P6S, -P6S1
1771-PS7
1772-P1
1772-P4
1774-P1
1775-P1
1777-P4
Product Compatibility

Preface
Using This Manual
P-4
Read this manual in conjunction with the following documentation:
Publicatin Number Title
1770-4.1 Programmable Controller Grounding and Wiring Guidelines
1771-2.210 Universal I/O Chassis Product Data
1772-6.6.2 PLC-2/20 and 2/30 Assembly and Installation Manual
1772-6.8.1 PLC-2/20 Programming and Operations Manual
1772-6.8.3 PLC-2/30 Programming and Operations Manual
1772-2.8 Remote I/O Scanner/Distribution Panel Product Data
1772-2.18 Remote I/O Scanner/Distribution Panel Product Data
1775-6.7.1 PLC-3 Controller Installation and Operations Manual
1775-6.3.1 PLC-3 Controller Backup Concepts Manual
1775-6.5.2 I/O Scanner-Programmer Interface Module User's Manual
1775-6.5.3 I/O Scanner-Message Handling Module User's Manual
1785-6.6.1 PLC-5 Family Assembly and Installation Manual
5000-6.4.7 PLC-5/250 Installing and Configuring Manual
6008-6.2.1 Q-bus I/O Scanner Module Installation Manual
6008-6.5.2 VME I/O Scanner Module User's Manual
6008-6.5.3 IBM PC I/O Scanner Module User's Manual
For a complete list of Allen–Bradley documentation, refer to Publication
SD499, PC Publication Index.
This chapter gave you information on how to use this manual efficiently.
The next chapter introduces you to the remote I/O adapter module.
Related Publications
Summary
Allen-Bradley PLCs

Chapter 1
1-1
Introducing the Remote I/O Adapter Module
This chapter describes the cat. no. 1771-ASB, series D remote I/O adapter
module:
module description and features
hardware components
The remote I/O adapter module serves as an interface between remote I/O
modules and programmable controllers. The remote I/O adapter:
transmits data up to 10,000 cable-feet (at 57.6K baud)
provides faster backplane scanning and data transmission up 2500
cable-feet at 230.4K baud
receives/sends data from/to the I/O scanner in serial form
reads/writes data from/to the input modules in parallel form
reads/writes data from/to the output modules in parallel form
supports any mix of I/O (4, 6, 8, 16 or 32 points)
supports three methods of I/O addressing; 1/2-slot, 1-slot and 2-slot
checks I/O configuration on power-up to verify I/O module placement
scans all slots in the chassis, or all but the last four slots, allowing
improved scan time and I/O image space savings. Slot power supplies
can be used in the last quarter of the rack without using I/O space.
can emulate series B adapters, providing system response similar to the
1771-ASB series B. This allows use of 1771-S4A and -S4B scanners
which require slower response for proper operation.
has enhanced diagnostic indicators for easier troubleshooting.
Chapter Objectives
Module Description and
Features

Introducing the Remote I/O Adapter
Module
Chapter 1
1-2
The remote I/O adapter module consists of four major components:
diagnostic indicators
module switch assemblies
field wiring arm
Diagnostic Indicators
Diagnostic indicators are located on the front panel of the adapter module
(Figure 1.1). They show both normal operation and error conditions in
your remote I/O system. The indicators are:
ACTIVE (green)
ADAPTER FAULT (red)
I/O RACK FAULT (red)
A complete description of these indicators and how to use them for
troubleshooting is explained in chapter 4.
Figure 1.1
Remote
I/O Adapter Module
Diagnostic
Indicators
Switch S1
Configuration
Jumpers
Field
Wiring
Arm
10796I
Switch S2
Hardware Components
Allen-Bradley PLCs

Introducing the Remote I/O Adapter
Module
Chapter 1
1-3
Module Switch Assemblies
You must set two switch assemblies to configure your adapter module.
Figure 1.2 shows the location of the switches.
Figure 1.2
Switch
Locations
Switch Assembly
(S1)
Switch Assembly
(S2)
The S1 Assembly is used to select:
the first I/O group number
the I/O rack number
I/O scanner communication with or without complementary I/O
(for PLC-2 family processors)
The S2 Switch Assembly selects:
a specific baud rate based on the maximum I/O chassis distance
I/O scanner communication with or without complementary I/O
(for PLC-2 family processors)
scan - processor will scan all slots in the chassis, or all but the last
four slots in the chassis
link response - establishes series B emulation response time
required for compatibility with PLC-2 and PLC-3 scanners.
Field Wiring Arm
The field wiring arm (cat. no. 1771-WB) provides connection points for:
I/O communication cables
a user-supplied I/O chassis restart pushbutton
The field wiring arm (Figure 1.1) pivots on the front of the chassis to
connect with the module’s printed circuit board. This feature allows you to
remove the adapter module without disconnecting the system wiring.
In this chapter we discussed the functions and hardware components of the
Remote I/O Adapter Module.
Summary

2
Chapter
2-1
Installing Your Module
This chapter describes the procedures for installing your remote I/O
adapter module. These include:
power requirements
module location and keying
setting configuration plugs
setting the module switches
setting the I/O chassis switches (backplane and
setting the I/O chassis power supply configuration plug
wiring the field wiring arm
installing the terminator resistor
compatibility of products
installing the module
The remote I/O adapter module requires a backplane current of 1.0A at
5V dc. Remember to add this amount to other current requirements for
your remote I/O chassis.
The remote I/O adapter module must be installed in the leftmost slot of the
I/O chassis.
The I/O chassis backplane connectors are keyed to accept only one type of
module. This prevents accidental insertion of other modules in the wrong
module slot. Key the backplane connectors (Figure 2.1) for the adapter
module as follows:
upper connector: between 54 and 56
lower connector: between 16 and 18
Figure 2.1
Keying
Diagram
40
42
44
46
48
50
52
54
56
2
4
6
8
10
12
14
16
8
0
22
Insert keying bands between:
upper connector  54 and 56
lower connector  16 and 18
2
112252
Upper Connector
Lower Connector
Keying Bands
Chapter Objectives
Power Requirements
Module Location and Keying
Allen-Bradley PLCs

Installing Your Module
Chapter 2
2-2
You need to set configuration plugs on the remote I/O adapter module to
use 32-point I/O modules, . You access the plugs through the access hole
on the left side of the module (Figure 2.2). Each plug is inserted on two
pins of a three-pin connector. Thermocouple Input Modules (Cat. No.
1771-IX and -IY) are not compatible with 32-point I/O modules.
Figure 2.2
Setting
the Module Configuration Plug
Position all 3 jumpers
on the left 2 pins 10797I
Important: When you set the configuration plugs in the left position, you
can use 32-point I/O modules and any addressing method, but you cannot
use Cat. No. 1771-IX or 1771-IY modules. When you set these plugs in the
right position, you can use 1771-IX and 1771-IY modules and any
addressing method, but you cannot use 32-point I/O modules. If the plugs
are set incorrectly, addressing errors will occur.
If you need to use a thermocouple module and 32-point I/O modules in the
same remote chassis, use the 1771-IXE Thermocouple/Millivolt Module
(Cat. No. 1771-IXE).
Setting the Module
Configuration Plugs

Installing Your Module
Chapter 2
2-3
Set switch assemblies S1 and S2 (Figure 2.3) with a blunt, pointed
instrument such as a ball-point pen. Do not use a pencil; the lead could
break off and jam the switch.
This publication describes switches as being either on or off. The words
ON and OFF should be printed on the switch assemblies. If a switch
assembly has the word OPEN printed on it, the word OPEN corresponds
to OFF.
Figure 2.3
S1
and S2 Switch Assembly Locations
12345678
O
N
O
F
F
O
N
O
F
F
1234
Address Switch Assembly
(S1)
Switch Assembly
(S2)
56
Address Switch Assembly (S1)
You use this switch assembly to select:
the first I/O group number
the I/O rack number
primary/complementary – I/O scanner communication with or
without complementary I/O (for PLC-2 and PLC-5 family
processors)
Switch Assembly (S2)
You use this switch assembly to select:
baud – a specific baud rate based on the maximum I/O chassis
distance
primary/complementary – I/O scanner communication with or
without complementary I/O (for PLC-2 family processors)
scan - select whether the processor will scan all slots in the
chassis, or all but the last four slots in the chassis
Setting the Module Switches
Allen-Bradley PLCs

Installing Your Module
Chapter 2
2-4
link response - unrestricted or series B emulation.
Certain scanner modules with multiple communication ports
require a delay in the link turnaround time to allow the central
processing unit (CPU) in the scanner sufficient time to service all
communication ports. Without this delay, some incoming
information may be missed while the scanner is servicing another
port. This results in multiple communication retries. To provide the
necessary delay, set the link response switch (position 5, switch
S2) to the ON position.
Scanner modules which requirea delay are:
Programmable Controller Scanner Module
PLC2 1772SD2
1775S4A
PLC3 1775S4B
1775S5
PLC3/10 1775SR5 PLC3/10 1775SR
Refer to the Table below for Figure and page numbers of switch settings
for each processor family.
S1 and S2 Switch Settings for: Refer to:
PLC2 family processor Figure 2.4, page 25
PLC3 family processor Figure 2.5, page 26
PLC5 family processor without complementary I/O Figure 2.6, page 27
PLC5 family processor with complementary I/O Figure 2.7, page 28

Installing Your Module
Chapter 2
2-5
Figure 2.4
Module
Switch Assembly Settings for PLC2 Family Processors
12345678
O
N
O
F
F
O
N
O
F
F
1234
First I/O group number
(Table 2.C)
I/O rack number
(Table 2.C)
Address Switch Assembly
(S1)
Switch Assembly
(S2)
SD  always OFF
SD2  without complementary I/O  always OFF
SD2  with complementary I/O 
ON  Primary chassis
OFF  Complementary chassis
Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
Maximum I/O
chassis distance
SD  always ON
SD2  without complementary I/O
 always ON
SD2  with complementary I/O 
ON  Primary chassis
OFF  Complementary chassis
Always ON
56
Link Response  ON for series B emulation
Scan  on for all but last 4 slots
off for all slots
OFF for unrestricted
Switch Position
1 2
57.6K Baud  10,000ft
1 15.2K Baud  5,000ft
Not Used
Not Used
10798I
ATTENTION:Link response switch must
be ON when using the following scanner
modules:
1772SD2
ON OFF
OFF OFF
ON ON
ONOFF
Off
Table 2.C
I/O
Rack Number and First I/O Group Switch Selections for the Address
Switch Assembly S1 (PLC2 Family Processors)
I/O Rack
Number
Switch Selections
4 5 6
First I/O Group
Number
Switch Selections
7 8
1On On On 0On On
2On On Off2On Off
3On Off On 4Off On
4On Off Off6Off Off
5Off On On
6Off On Off
7Off Off On
Allen-Bradley PLCs

Installing Your Module
Chapter 2
2-6
Figure 2.5
Module
Switch Assembly Settings for PLC3 Family Processors
12345678
O
N
O
F
F
First I/O group number
(Table 2.D)
I/O rack number
(Table 2.D)
Address Switch Assembly
(S1)
Switch Assembly (S2) Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
O
N
O
F
F
123456
Switch Position
1 2
57.6K Baud  10,000ft
1 15.2K Baud  5,000ft
Not Used
Maximum I/O
chassis distance Link Response  ON for series B emulation
Scan
 On for all but last 4 slots
Off for all slots
OFF for unrestricted
Always OFF
10799I
ATTENTION: Link response switch must
be ON when using the following scanner
modules:
1775S4A
1775S4B
1775S5
1775SR5
1775SR
ON OFF
OFF OFF
ON ON
ON
230.4K Baud  2,500ft
1
OFF
1230.4K
Baud with 1775S5 revision A/G, and
1775SR5 revision A/G scanners only .
Off
Table 2.D
I/O
Rack Switch Selections for the Address Switch Assembly
(PLC3 Family Processors)
Rack
#
Switch Setting
1 2 3 4 5 6
Rack
#
Switch Setting
1 2 3 4 5 6
Rack
#
Switch Setting
1 2 3 4 5 6
Rack
#
Switch Setting
1 2 3 4 5 6
00 On On On On On On 20 On Off On On On On 40 Off On On On On On 60 Off Off On On On On
01 On On On On On Off 21 On Off On On On Off 41 Off On On On On Off 61 Off Off On On On Off
02 On On On On Off On 22 On Off On On Off On 42 Off On On On Off On 62 Off Off On On Off On
03 On On On On Off Off 23 On Off On On Off Off 43 Off On On On Off Off 63 Off Off On On Off Off
04 On On On Off On On 24 On Off On Off On On 44 Of On On Off On On 64 Off Off On Off On On
05 On On On Off On Off 25 On Off On Off On Off 45 Off On On Off On Off 65 Off Off On Off On Off
06 On On On Off Off On 26 On Off On Off Off On 46 Off On On Off Off On 66 Off Off On Off Off On
07 On On On Off Off Off 27 On Off On Off Off Off 47 Off On On Off Off Off 67 Off Off On Off Off Off
10 On On Off On On On 30 On Off Off On On On 50 Off On Off On On On 70 Off Off Off On On On
11 On On Off On On Off 31 On Off Off On On Off 51 Off On Off On On Off 71 Off Off Off On On Off
12 On On Off On Off On 32 On Off Off On Off On 52 Off On Off On Off On 72 Off Off Off On Off On
13 On On Off On Off Off 33 On Off Off On Off Off 53 Off On Off On Off Off 73 Off Off Off On Off Off
14 On On Off Off On On 34 On Off Off Off On On 54 Off On Off Off On On 74 Off Off Off Off On On
15 On On Off Off On Off 35 On Off Off Off On Off 55 Off On Off Off On Off 75 Off Off Off Off On Off
16 On On Off Off Off On 36 On Off Off Off Off On 56 Off On Off Off Off On 76 Off Off Off Off Off On
17 On On Off Off Off Off 37 On Off Off Off Off Off 57 Off On Off Off Off Off 77 Not valid
1st I/O Group
Number
Switch Selections
7 8
Note: Rack address 77 is an illegal configuration.
PLC3 processors can scan racks 076.
0 On On
p
2 On Off
4 Off On
6 Off Off

Installing Your Module
Chapter 2
2-7
Figure 2.6
Module
Switch Assembly Settings for PLC5 Family Processors W ithout
Complementary I/O
12345678
O
N
O
F
F
First I/O group number
(Table 2.E)
I/O rack number
(Table 2.E)
Address Switch Assembly
(S1)
Switch Assembly
(S2)
O
N
O
F
F
123456
Link Response  on for series B emulation
off for unrestricted
Scan  on for all but last 4 slots
off for all slots
Always OFF 10800I
Switch Position
1 2
ON OFF 57.6K Baud  10,000ft
OFF OFF 1 15.2K Baud  5,000ft
ON ON Not Used
Maximum I/O
chassis distance(see note)
OFF ON 230.4K Baud  2,500ft
Note: PLC5/15 and 5/25 processors
operate at 57.6K baud only.
Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
Off
Table 2.E
I/O
Rack Selection for PLC5 Family Processors
without Complementary I/O
Rack
#
Switch Setting
1 2 3 4 5 6
Rack
#
Switch Setting
1 2 3 4 5 6
1st I/O
Group
Number
Switch
Selections
7 8
00 On On On On On On 20 On Off On On On On 0On On
01 On On On On On Off21 On Off On On On Off2On Off
02 On On On On Off On 22 On Off On On Off On 4Off On
03 On On On On Off Off23 On Off On On Off Off6Off Off
04 On On On Off On On 24 On Off On Off On On
05 On On On Off On Off25 On Off On Off On Off
06 On On On Off Off On 26 On Off On Off Off On
07 On On On Off Off Off27 On Off On Off Off Off
10 On On Off On On On 30 On Off Off On On On
11 On On Off On On Off31 On Off Off On On Off
12 On On Off On Off On 32 On Off Off On Off On
13 On On Off On Off Off33 On Off Off On Off Off
14 On On Off Off On On 34 On Off Off Off On On
15 On On Off Off On Off35 On Off Off Off On Off
16 On On Off Off Off On 36 On Off Off Off Off On
17 On On Off Off Off Off37 On Off Off Off Off Off
PLC5/11 processors can scan rack 03.
PLC5/15 and PLC5/20 processors can scan racks 0103.
PLC5/25 and PLC5/30 processors can scan racks 0107.
PLC5/40 and PLC5/40L processors can scan racks 0117.
PLC5/60 and PLC5/60L processors can scan racks 0127.
PLC5/250 processors can scan racks 037.
Allen-Bradley PLCs

Installing Your Module
Chapter 2
2-8
Figure 2.7
Module
Switch Assembly Settings for PLC5 Family Processors W ith
Complementary I/O
12345678
O
N
O
F
F
First I/O group number
(Table 2.F)
I/O rack number
(Table 2.F)
Address Switch Assembly
(S1)
Switch Assembly
(S2) Pressed in at top
Closed (ON)
Pressed in at bottom
Open (OFF)
Always ON
ON  Primary chassis
OFF  Complementary chassis
ON  Primary chassis
OFF  Complementary chassis
O
N
O
F
F
123456
Link Response  on for series B emulation
Scan  on for all but last 4 slots
off for all slots
off for unrestricted
10801I
Switch Position
1 2
ON OFF 57.6K Baud  10,000ft
OFF OFF 1 15.2K Baud  5,000ft
ON ON Not Used
Maximum I/O
chassis distance(see note)
OFF ON 230.4K Baud  2,500ft
Note: PLC5/15 and 5/25 processors
operate at 57.6K baud only.
Off
Table 2.F
I/O
Rack Selection for PLC5 Family Processors with Complementary I/O
I/O
Rack #
Switch
1 2 3 4 5 6
1st I/O Group
Number
Switch Selections
7 8
01 On On On On On Off0On On
02 On On On On Off On 2On Off
03 On On On On Off Off4Off On
6Off Off
04 On On On Off On On
05 On On On Off On Off
06 On On On Off Off On
07 On On On Off Off Off
See note below
Note: PLC5/11 can scan rack 03.
PLC5/20, PLC5/30, PLC5/40, PLC5/60 can scan racks 0107.