Rockwell Automation Allen-Bradley PLC-2/30, Allen-Bradley PLC-2/20 Assembly And Installation Manual
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ALLEN-BRADLEY
PLC-2/20,
Programmable
Assembly and Installation Manual
PLC-2/30
Controllers
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Important User
Information
Because of
the
differences between solid
the
variety of uses for
state
this
product
products
and
and
because of
electromechanical products, those responsible for applying
and
using
acceptability of each application
this
product
must
satisfy themselves
and
use of
the
as
to
the
product.
For
more information, refer to publication SGI-1.1 (Safety
Guidelines
Maintenance of Solid
For
The Application,
State
Installation
Control.)
and
The illustrations, charts,
manual
are
intended solely to illustrate
manual. Because of
associated with
Company
based
use
patent
No
cannot
upon
with respect to use
software described
Reproduction of
any
assume responsibility or liability for actual
the
illustrative uses
liability is assumed
of
in
the
and
layout
the
many
particular
variables
installation, Allen-Bradley
by
information, circuits, equipment or
this
text.
contents of
part, without written permission
Company is prohibited.
® 1988 Allen-Bradley Company, Inc.
PLC is a registered trademark
of
Allen-Bradley Company, Inc.
Warnings tell readers where people
procedures
are
not
followed properly.
Cautions tell readers where machinery
damaged or economic loss
not followed properly.
examples shown
the
text
of
this
and
requirements
and
applications.
Allen· Bradley Company
this
manual,
of
the
can
Allen-Bradley
occur
in
whole or
may
be
hurt
may
be
if
procedures are
in
this
in
if
Warnings
and
Cautions:
• Identify a possible trouble spot.
• Tell
• Give
• Tell
Important:
what
the
We
causes
the
result of improper action
the
trouble
reader how to avoid trouble.
recommend you frequently backup your
application programs on appropriate storage medium to avoid
possible
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
data
loss.
Table
of
Contents
1
1.0
1.1
1.2
1.3
1.4
1.5
1.5.1
1.5.2
2
2.0
2.1
2.1.1
2.1.2
2.2
2.2.1
2.2.2
2.2.3
2.3
2.4
2.4.1
2.4.2
2.4.3
2.5
2.5.1
2.6
2.7
2.7.1
2.7.2
2.7.3
Introduction
General
PC
Definition
Fundamental
Preassembly
Concepts
and
Precautionary
Related Publications
Remote
Power
I/0
Installation
Supplies
Hardware
General
PLC-2/20
••••••••••••••••••••••••••••••••••••••••••••••••
and
PLC-2/30
Processor Control
Memory
Common
Modu
1 es
Equ
i.pment
Processor Chassis
Processor Interface
System
I/0
l/0
l/0
Keying
Input/Output
l/0
Field
Programming
Auxiliary
6.5
9
Amp
Power
Power
System
Supply
Structure
Chassis Structure
Chassis
••••••••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••••••••••••
Modules
Module
Addressing
Wiring
Arms
Terminal
Power
Amp
Auxiliary
Auxiliary
Supply
Compatibility
•••••••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••
Installation
Notes
••••••••••••••••••••••••••••••••••••
•••••••••••.•••••••••••••••
•••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••••
Processors
Module
•••••••••••••••••••••••••••••••
•••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••
Module
Module
•••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••
Supplies
Power
Power
•••••••••••••••••••••••••••••••
Supplies
Supplies
•••••••••••••••••••••••
•••••••••••••••••••••••••
•••••••••••••••••••••••••••••
1-1
1-1
1-1
1-2
1-2
2-1
2-1
2-1
2-1
2-2
2-3
2-4
2-9
2-9
2-10
2-11
2-13
2-15
2-15
2-19
2-20
2-21
2-26
2-27
2-29
2-30
2;...31
2-32
3
3.0
3.1
3.1.1
3.1.2
3.1.3
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.2.7
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.4
Assembly
General
Processor
Memory
Memory
Battery
1771
Switch
Input
Power
Keying
l/0
Adapter
I/0
Module
Field
System
Operating Temperature
Electrical
and
Installation
••••••••••••••••••••••••••••••••••••••••••••••••
Assembly
Module
Segments
Backup
1/0 Chassis
Group
Power
Supply
Band
Assembly
Connection
Configuration
Installation
Module
Installation
Wiring
Arm
Installation
Installation
Installation
•••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••••
Assembly
••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••
Installation
••••••••••••••••••••••••••••••••
Installation
Recommendations
••••••••••••••••••••••••••••••••••
Noise
•••••••••••••••••••••••••••••••••••••••
Constant Voltage Transformer
Enclosure Considerations
General
Component
Grounding
Layout
Information
••••••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••
••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••
Plug
••••••••••••••••••••••••
••••••••••••••••••••••••
•••••••••••••••••••••••••••
••••••••••••••••••••
•••••••••••••••••••••••••••
•••••••••••••••••••••••••••
3-1
3-1
3-1
3-2
3-6
3-9
3-9
3-10
3-11
3-12
3-13
3-13
3-15
3-17
3-18
3-18
3-21
3-22
3-23
3-26
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Table
of
Contents
3.5
3.5.1
3.5.2
3.5.3
3.6
3.7
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.8
4
4.0
4.1
4.2
4.2.1
4.2.2
4.2.3
4.3
4.3.1
4.3.2
5
5.0
5.1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.3.7
5.3.8
5.3.9
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
Component
Processor
I/O
Chassis
Auxiliary
Incoming
Wiring
Field Wiring Considerations
Field Wiring Guidelines
I/0
Wiring
I/0
Chassis
Input
Programming
System
Start-Up
Checkout
Hardware/Indicator Comparison
Input
Output
Programming
Using
Hardware/Indicator Comparison Procedures
Checkout
Maintenance
Genera 1 ••••••••••••••••••••••••••••••••••••••••••••••••
Preventive Maintenance
Spare
Troubleshooting
Processor Front Panel
Processor Fault
Memory
Local
Remote
Remote
Output
Fuses
Troubleshooting
Rules
Replacing A Processor
Replacing Processor Control
Replacing Processor
Replacing Processor
1/0 Adapter
Replacing
Mounting
••.••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••••••••
Power
AC
and
Supplies
Wiring Guidelines
Cabling
Installation
•••••••••••••••••••••••••••••••
••••••••••••••••••••••••••
•••••••••••••••••••••••
••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
Power
Installation
Power
Connection
Connections
Terminal
••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
Installation
•••••••••••••••••••••
Start-Up
•••••••••••••••••••••••••••••••••••••••••••••••
Before Applying
Modules
Modules
••••••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••••••
Terminal
The
Industrial
of
Parts
Machine
and
•••••••••••••••••••.••••••••••••••••••••..••
Motion
Troubleshooting
••••••••••••••••••••••••••••••.•••••••••
Indicators
Module
I/0
I/0
I/0
Module
••••••••••••••••••••••••••••••••••••••••••••••••••
Indicators
Adapter Fault
Scanner
Distribution
Adapter Fault
Fuse
Indicator
With
for
Module
Replacement
Interface
System
Module
I/0
Modules
•••••••••••••••••••••••••••••••••••••
Power
••••••••••••••••••••••••
•••••••••••••••••••••••••
Indication
Terminal
••••••••••••••••••••••••
at
Start-Up
••••••••••••••••••.•••••.••••
••••••••••••••••••••••••••••.•••.
Indicators
••••••••••••••••••••••
•••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••
Indicators
Panel
Indicators
••••••••••••••••••••
Indicators
••••••••••••••••••••
••••••••••••••••••••••••••
an
Industrial
Terminal
•••••••••••••••••••••••••••
Memory
Module
Module
Module
Power
••••••••••••••••••••
••••••••••••••••••••
•••••••••••••••••••
Supply
Module
••••••••••••••••••••••••••••••••••
•••••••••••••
••••••••••••••
•••••••
•••••••••••
•••••••••
3-29
3-31
3-32
3-34
3-38
3-42
3-45
3-45
3-46
3-50
3-51
3-56
4-1
4-1
4-2
4-3
4-3
4-4
4-4
4-4
4-12
5-1
5-1
5-1
5-2
5-2
5-5
5-7
5-7
5-9
5-10
5-11
5-11
5-12
5-12
5-13
5-14
5-14
5-15
5-16
5-17
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Table
of
Contents
iii
6
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Appendix
A
A.1
A.2
A.3
A.3.1
A.3.2
A.3.3
A.4
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
2.10
2.11
2.12
2.13
2.14
2.15
2.16
2.17
2.18
2.19
2.20
2.21
Specifications
General
PLC-2/20
PLC-2/30
PLC-2/20,
AC
Power
24
Volt
I/0
Chassis
I/0
Modules
Industrial
••••••••••••••••••••••••••••••••••••••••••••••••
Processor
Processor
PLC-2/30
Supplies
DC
Power
•••••••••••••••••••••••••••••••••.••••••••••
•••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••
Memory
••••••••••••••••••••••••••••••••••••••
Supplies
••••••••••••••••••••••••••••••••••••••••••••
Terminal
••••••••••••••••••••••••••••••••••••
Addressing
Appendix
Addressing
Addressing
2-Slot Addressing
1-Slot Addressing
t-Slot
System
Processor Front
Processor with the
-ME16)
Memory
Memory
Battery
Battery
Memory
System
1772-P1, Series
Power
I/O
1771-AL
1771
Correspondence of
Objectives
Your
Modes
Addressing
Configurations
Panel
Installed
Segment
Module
Housing
Housing
••••••••••••••••••••••••••••••••••••••••••
Showing
Showing
Showing a Lithium
Write Protect
Power
Supply
C)
Supply
Backplane
Chassis Sizes
I/0
Local
Keying
I/0 Adapter
Band
•••••••••••••••••••••••••••••••••••••
Hardware
••••••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••
--
AC
Memory
•.•••••••.•••••.•••••.•••••••.••••.•••..
Battery Holder
Two
Jumper
Module
••••••••••••••••••••••••••••••••••••••
Socket
•••••••••••••••••••••••••••••••••••••••
Location
Hardware
Determining the Location of
Location
Address
••••••••••••••••••••••••••••••••••••••••
Determining the Location of
an
I/0
Rack
through a Location
Determining the Location of
I/0
Group
Example
Example
Industrial
Auxiliary
Auxiliary
through a Location
1771
8-Pt. Field
1771
16-Pt. Field
Terminal
Power
Power
•••••••••••••••••••••••••••••••••••••
Supply
Supply
(Cat.
(Cat.
Wiring
Modules
••••••••••••••••••••••
•••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••
F"IQures
Version
Module
•••••••••••••••••••••
(cat.
no.
1772-MES
or
••••••••••••••••••••
Alkaline Cells Installed ••••
Cell Installed
••••••••
•••••••••••••••••••••••••••••
- Side
View
(cat.
no.
•••••••••••••••••••••••••••
Module
Location to Processor
an
an
an
Wiring
••••••••••••••••••••••••
Numbers
I/0
I/0
Address
I/0
Address
Arms
Arms
No.
1771-P2)
No.
1777-P2)
•••••••••••••••••••
Rack
Through
Group
Number
••••••••••••••••••
Terminal
within
••••••••••••••••••••
••••••••••••••••••••
•••••••••••••••••••
•••••••••••••••
•••••••••••••••
Memory
a
within
an
•
6-1
6-1
6-1
6-3
6-3
6-3
6-3
6-4
6-4
A-1
A-1
A-2
A-3
A-7
A-10
A-13
2-3
2-4
2-6
2-6
2-7
2-8
2-9
2-11
2-12
2-16
2-17
2-19
2-22
2-23
2-24
2-25
2-26
2-26
2-27
2-29
2-30
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iv
Table
of
Contents
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
3.12
3.13
3.14
3.15
3.16
3.17
3.18
3.19
3.20
3.21
3.22
3.23
3.24
3.25
3.26
3.27
3.28
3.29
3.30
3.31
3.32
3.33
3.34
3.35
3.36
3.37
3.38
3.39
3.40
3.41
3.42
3.43
3.44
3.45
3.46
Memory
Memory
PLC-2/20
Processor
Battery
Battery
1771
Power
1771
1771-AL
1771
Example
Snapping
Field
Field
Typical Suppression for A
Module
Segment
(Side
Keying
View)
Processor Front
Module
Housing
Housing
Locations
(with Alkaline Cells}
(with a Lithium Cell}
I/0 Chassis Switch
Cable
I/0
I/0
Wiring
Wiring
Socket
Keying
I/O
Adapter
Rack
1771
Field
••••••••••••••••••••••••••••••••••••••
Band
Location
Module
Components
Field
Wiring
Wiring
Arms
Arm
Installed
(Wired)
...............................
•••••••••••••••••••••••••••••••••••
Panel
••••••••••••••••••••••••••
••••••••••••••••••••••••••••••
•••••••••••••••••••
•••••••••••••••••••
Group
Assembly
Numbers
and
•••••••••••••••••••
••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
Arms
Arm
onto Chassis
••••••••••••••••••••••••••
••••••••••••••••••
•••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••
Small
AC
Inductive
Typical Suppression for 3-Phase Inductive
Typical Suppression for
Typical Suppression for a
Typical
Ground
Ground
Details of
Minimum
Maximum
Mounting
Processor Chassis
1771
1771
1771
Auxiliary
Dimensions
Auxiliary
Dimensions
A~xili~ry
D1mens1ons
Typical
of a
Typical
of
1771
1771
Terminal
Module
Trim
Cable
Protection Shield
1771
External
External
External
PLC-2/30
Bus
Connection Details
Bus
Connections
Ground
Spacing
Rack
Assembly
Controller
Connections
Dimensions
Configuration
Details
Mounting
4-Slot
8-slot
I/0
and
Chassis
16-slot
12-Slot 1/0 Chassis
Power
Power
Power
(Stand
(I/0
Supply
Supply
Alone)
Supply
Chassis
••••••••••••••••••••••••••••••••••••••••••••••
Power
Grounded
Power
an
Ungrounded
Distribution (with Master Control Relay)
System
Distribution (with Master Control Relay)
System
8-Point Input/Output
16-Point Input/Output
Wiring
Wiring
Foil
Shield
and
Completed
Completed
Unnecessary Insulated
Grounding
at
1/0 Chassis
Power
Power
Power
Power
Terminal
Terminal
Strip
Processor/Industrial
Large
AC
Small
DC
Grounding
Inductive loads
Inductive
Configuration
•••••••••••••••••••••••••••
••••••••••••••••••••••••••••••••••
at
the Enclosure
••••••••••••••••••••••••••••••
••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••
Dimensions
Mounting
I/0
Chassis
Mounting
(Cat.
No.
Dimensions
1771-P2)
•••••••••••••••••••
Mounting
Dimensions
••••••••••••••••••••••••••••••••
(Cat.
Mounted}
(Cat.
No.
1771-P2}
••••••••••••••••••••••••
No.
1777-P2,
••••••••••••••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••
Assignment
Assignment
on
Field
Form
Form
Wiring
•••••••••••••••••••••••••••••••••
Wire
•••••••••••••••••••••••••••••••••
User's
Supply
Device
Strip
Strip
••••••••••••••••••••••
Connections
•••••••••••••••••••••••••••
(24
VDC
Power
••••••••••••••••••••••••••••••••••••
Terminal
Connection
Load
•••••••
Load
••••••••••
••••••••
Load
•••••••
•••••
Wall
•••••
•••••••••••••
Dimensions
••••••••••••
Mounting
Mounting
-P4)
Mounting
•••••••••••••••
••••••••••••••
Arm
•••••••••••
••••••••••••••••
•••••••••••••••
Supplies) •••
Diagram
••••••••
.
•
3-2
3-4
3-5
3-5
3-8
3-9
3-10
3-12
3-13
3-14
3-16
3-16
3-17
3-17
3-19
3-19
3-20
3-20
3-24
3-24
3-25
3-25
3-27
3-28
3-29
3-31
3-33
3-33
3-34
3-35
3-35
3-36
3-39
3-40
3-43
3-44
3-46
3-46
3-48
3-49
3-49
3-51
3-52
3-53
3-54
3-54
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4.1
4.2
4.3
4.4
Table
of
I/0
and
Industrial Terminal Status Indicators
Rung
for Testing Input Devices
Rung
for
Testing Output Devices
Rung
for
Testing Output Devices
Using
FORCE
ON
Instruction
Contents
•••••••••••
••••••••••••••••••••••••••
Using
a Pushbutton
••••••
••••••••••••••••••••••••••••••
v
4-3
4-7
4-8
4-11
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
A.1
A.2
A.3
A.4
A.5
A.6
A.7
A.8
A.9
A.10
A.11
PLC-2/20
Processor
System
1771-AL
1772-SD2
1771-ASB
Example
Auxiliary
Processor
1771
(AC
Version) Front
Module
Power
I/0 Adapter
Locations
Supply
Module
Module
Scanner/Distribution
Remote
I/0 Adapter
of 8-point Output
I/0
Power
Module
Rack
Supply
Locations
.•........••...•.••••...•.•.•••••••.....•..
Panel
Indicators
••••••••••••••••••••••••••••••
(Side
View)
••••••••••••••••••
••••••••••••••••••••••••••••••
Module
(cat.
Panel
Module
no.
Status Indicators •••
Status Indicators
••••••••••••••••••••••••
1771-P4}
••••••••••••••••••••••••••••••
Hardware/Data Table Addressing Relationships
Illustration
Input
Modules
Illustration
and
Output
Illustration
and
Output
I/0
Image
Assigned
Illustration
16-point
Assigning
Example
Illustration
Using
a 32-Point I/0
Assigning
Group
Address of a
Modules
Modules
Table
Rack
I/0
I/0
of
1-slot
I/0
of
2-slot
Addressing with
Two
••••••••••••••••••••••••••••••••••••••••••••
of
2-slot
Addressing with 8-point Input
•••••••••••••••••••••••••••••••••••••••
of
2-slot
Addressing with 16-Point Input
••.••••••.••••••••••••••••••••••••••••
and
Number
of
1-slot
Modules
Rack
Numbers
Addressing
of
i-slot
Rack
Numbers
Module
Corresponding
For
2-slot
Addressing with
••••••••••••••••••••••••••••••••••••
with
addressing
Module
•••••••••••••••••••••••••••••
with 1/2-Slot Addressing
in
Hardware
Addressing
1-slot
Addressing
••••••••••••••••••••••••••••
Four
Different
••••••••••••
••••
•••••••••••••••
••••••••••••
8-point
for
One
•••••••••••••••
••••••••
••••••
Racks
••••••••
5-2
5-3
5-3
5-7
5-8
5-9
5-10
5-11
5-12
5-15
A-2
A-4
A-4
A-5
A-7
A-8
A-9
A-9
A-ll
A-12
A-13
Tables
2.A
2.B
2.C
3.A
3.8
3.C
3.0
3.E
A.1
PLC-2/20
I/0
Power
Memory
I/0
Power
Power
Power
Series
Modes
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and
PLC-2/30
Chassis Sizes
Memory
Modules
•••••••••••••••••••••••••••••••••••••••
Supply Current Rating for Selected
Segment
Chassis Switch
Supply
Supplies
Cable
B,
1771
Vs.
I/0
Installation
Group
Power
Requirements
and
Power
Lengths
Universal
Adapters
•••••••••••••••••••••••••••••
Settings
For
•••••••••••••••••••••••••
Cables
•••••••••••••••••••••••••
•••••••••••••••••••••••••••••••••••••
I/O
Chassis, Addressing
•••••••••••••••••••••••••••••••••••
••••••••••••••••••••
Power
Local
Supplies ••
Rack
Number
••
2-4
2-16
2-29
3-3
3-9
3-11
3-21
3-27
A-17
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1.0
General
1.1
PC
Definition
This
PLC-2/20
and
Installation
applies to
only one controller,
used.
term
When
is used.
and
Manual
both
controllers.
a topic applies to
2/30
Programmable
(publication 1772-6.6.2)
the
When
term
a topic applies to
PLC-2/20
both
controllers,
Chapter 1
Introduction
Controller Assembly
or
PLC-2/30 is
neither
A
control device for
"programmable"
changed
1.2
Fundamental Concepts
The controller continuously monitors
devices connected
program,
as
different types
ranges. They include
o Limit, float, selector,
o
o
o Alarms, indicators,
o Solenoids
o Motors or motor
o
o
programmable
to
meet
the
controller controls
outputs.
Pushbutton
Thumbwheel
Transducers
Various
analog
These
with
solid
instrumentation
controller (PC) is a solid
industrial
implies,
changing
as
inputs.
input
various
the
switches
switches
starters
state
applications. As
its
memory
application
Based on
the
and
output
voltage
following.
or
pressure
or
annunciator
devices,
including
can
requirements.
the
the
devices connected
devices
and
switches
state
the
be readily
status
user's
can
current
panels
TTL
and
logic
term
of
be of
Typical applications include
palletizing,
paper
The controller stores
central
status
user's
possible for
as
timing,
/), comparison,
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measuring
pulp,
and
food processing, to
read-write memory.
data
to be accessible
program. PC
the
controller to perform operations
counting,
and
and
all
programming
arithmetic
data
material
gauging, petrochemical,
JJO
device
This
during
operations
manipulation.
handling,
mention
status
allows
the
instructions
data
the
scanning
a few.
latest
(
+,
in
make
-,
a
of
the
such
x,
it
1-2
Chapter 1 Introduction
The
controllers
simple
entered
programming
and
Programming
processors
tape
the
allows a
format.
into
monitor
punches
Data
Cartridge
variety
The
memory
terminal
the
terminals
with
and
use
readily
ladder
understandable
diagram
using a programming
is
also
status
peripheral
of
of
the
can
readers,
Recorder
additional
user's
also
devices.
keyboards
(cat.
capabilities
program
used
to
edit
110
be
used
The
and
no. 1770-SB).
symbols
is
terminal.
the
devices.
to
interface
devices
printers,
as
follows:
in
manually
A
program
the
include
and
Each
a
Storing
o
tape
o
Loading
o
Generating a hard-copy
o
Generating
programmed
On
the
various
that
show
status.
These
diagnosis
troubleshooting.
1.3
Preassembly and Installation
Carefully
installation
that
the
closely
up.
with
the
program
the
program
various
format
controller
1/0
device, processor,
indicators
of a fault
read
this
is
attempted.
hardware
and
processor
on
magnetic
from
printout
types
components
aid
in
situation
manual
before
It
is
installation
programming
tape
of
reports
and
providing
which
aids
any
strongly
personnel
personnel
or
punched
to
PC
of
the
program
in a user-
are
indicators
power
supply
quick
in
.
assembly
recommended
work
at
paper
or
start-
WARNING:
contents
installation
components.
result
in
undesired
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Read
of
this
of
the
Failure
damage
operation
completely
manual
controller
to
observe
to
the
with
and
understand
before
attempting
or
any
of
this
warning
programmable
possible
injury
thoroughly
assembly
its
could
controller
to
personnel.
the
and
and/or
1.4
Precautionary Notes
Chapter 1 Introduction
In
this
manual
1-3
you will see:
1.5
Related Publications
1.5.1
Remote
110
Installation
o WARNINGS to tell you where you
you
do
not
follow procedures properly.
o CAUTIONS to tell you where
if
you
do
not
follow procedures properly
o
Important
your
understanding
The
following publications provide
information
notes
about
that
or
related
stress
use
aspects
equipment
information
of
the
additional
of
your
PLC-2/30 system.
The
following
information
o Local
about
I/0
related
remote
Adapter
documents
I/0
installation.
Module
Product
contain
1771-2.95)
may
be
may
critical
products.
PLC-2/20
additional
Data
(pub. no.
injured
be
to
or
if
damaged
1.5.2
Power Supplies
o Remote
I/0
Adapter
Module Assembly
(pub. no. 1 772-2.48)
I/0
o Remote
Scanner/Distributor
(pub. no. 1772-2.18)
The
following
information
these
processors.
1772-Pl,
o Series B
related
about
1777-P2
and
documents
power
supplies
C Power Supplies (pub. no. 1771-2.4)
1771-P3, 1771-P4, 1771-P5
o
Power
Supply
Modules
1771-2.111)
1771-P7
o
AC (120/220) 16A Power
1771-2.93)
1772-P4, 1777-P4
o 24V DC
Input
Power
Supply
contain
that
Product
Supply
(pub. no. 1772-2.12)
Product
Panel
Product
additional
can
be used
Data
(pub. no.
Module (pub. no.
Data
Data
with
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2.0
General
This
chapter
PLC-2/20
programmable
components:
o
Processor
o
110
o
110
o
Industrial
o
Auxiliary
describes
and
Chassis
Modules
the
hardware
PLC-2/30
controller is
Terminal
Power Supplies
programmable
made
associated
controllers.
up
of
the
Chapter 2
Hardware
with
Each
following
the
must
You
their
controller.
PLC-2/20, PLC-2/30 Common Equipment
There
the
PLC-2/30 processors. They are:
o Processor
o Processor Interface Module
o Power Supply
These components
PLC-2/20 Programmable Controller
There
processor (figure 2.1).
o Processor
o Memory
processor to function.
of
be ordered
specify
associated cables
are
three
are
two modules which
the
1772-LP2
each
components common to
Chassis
are
Control Module (cat. no. 1772-LI)
Module-
programmable
separately.
of
these
when
discussed
They
A memory module is
above components
ordering
are
are:
It
is
not
the
in
section 2.2.
unique
included
controller
the
and
programmable
PLC-2/20
to
the
required
as a part
and
PLC-2/20
and
for
must
the
These modules
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are
discussed
in
section 2.1.
2-2
Chapter 2 Hardware
2.1
PLC-2/20
and
Processors
PLC-2130
There
processor (figure 2.1).
o Processor Control Module
o Memory
These modules
PLC-2130
The
the
the
Input
which
program.
modules.
Programmable
are
two modules
Module-
processor to function.
of
the
1772-LP3
ordered
separately.
are
discussed
PLC-2/20 Processor (cat. no. 1 772-LP2, -LP2D4)
Controller
which
They
are
are:
(cat.
unique
no. 1 772-LG)
A memory module is
It
is
not
included
programmable
in
controller
section 2.1.
to
the
required
as a part
PLC-2/30
for
and
must
or
PLC-2/30 Processor (cat. No. 1 772-LP3, -LP3D4) is
central
processing
module
operates
Then
signals
on
this
it
transmits
unit
of
are
transmitted
data
the
system
in
accordance
this
data
(figure 2.1).
to
the
processor
with
to
the
output
your
the
be
e
0.~.
ILQW.ti.OW
~~
•·0
.
+
0 @
L1
J~~~~~
1.2
@
-
Figure 2.1
Processor Front Panel -
~0
PifiiiOGI'IAM
.........
~~..
.
m
~0
1/0
fiiiAC:K
.
.
~
e
e
AC
Version
Legend:
1.
Access memory and processor
modules by removing panel
2.
User
power
3.
1/0 rack power socket
4. Program panel socket
5.
1/0 rack socket
6.
Main
input
7.
DC ON
8.
RUN
indicator
9.
Four-position mode select switch
10.System power
located here
connections
fuse
indicator
supply
module
10662
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Chapter 2 Hardware
2.1.1
Processor Control Module
The
2/20),
slot (second slot from
chassis
to provide control functions,
with
properly
covered
processor chassis
one on bottom).
the
Indicator
Processor Control Module (cat. no. 1772-LI (PLC-
1772-LG (PLC-2/30)) occupies
the
right)
(figure 2.2).
This
module's
timing,
other
front
processor modules. Once
seated
with a front
panel
into
the
backplane
panel
with
two
In
addition
also covers
which is secured to
thumb
to covering
the
the
middle
of
the
processor
primary
and
inserted
socket,
function is
interfacing
and
it
is
screws (one on top
this
module,
memory module.
plastic
the
2-3
and
The PROCESSOR FAULT
helpful
illuminates
scan
replacing
through
labeled
Figure
Processor
Installed
in
isolating
when
fails.
This
this
the
window on
PROC FAULT
2.2
with the
System
Power
Supply
Module
processor
the
fault
module.
Memory
logic controlling
is
usually
This
the
on
Module
indicator
(figure 2.2) is often
malfunctions.
corrected by
indicator
front
the
panel
window.
(cat. no. 1772-MEB
the
can
cover
It
processor
be seen
and
or
-ME16)
is
Processor
Fault
System
Power
Supply
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Processor
1 nterface
Module
Slot
Processor Module (Cat.
Control No. 1772-MEB
Module
Memory
or1772-ME16)
10668
2-4
2.1.2
Memory Modules
Chapter 2 Hardware
The
Memory Module
1772-MES,
slot
in
specifies
Table 2.A
PLC-2120
or
the
processor
the
memory module for
and
PLC-2130
(cat.
no. 1772-ME, 1772-MEB,
1772-ME 16) occupies
chassis
(figure 2.2).
each
Memoty
Modules
the
right-most
Table
processor.
plastic
2.A
Maxi111.1•
Memory
Size
Module
Type
================-==============-==============-=============-================
8K
(8192
16K
(16256
Words
Words)
Words
Words)
1772-ME
1772-MEB
1772-MEB
1772-MEB
1772-ME16
1772-LPl
1772-LP2
1772-LP2D4
n/a
n/a
2/20
Processor
I
1772-LP3
1772-LP3D4
1772-LP3
1772-LP3D4
2/30
Max
Data
Table Size
8064
words
8192
words
Fixed CMOS RAM Memory Modules
(cat.
nos. 1772-MES
These
1772-MES
words. You
(PLC-2/20)
modules
stores
may
or
a 1 772-LP3 (PLC-2.30); you
1772-ME-16 only
and
contain
BK
words;
use
the
with
1772-ME16)
non-removable RAM
the
1 772-ME 16
1772-MES
the
1772-LP3 processor.
with
either
storage.
stores
a 1772-LP2
may
use
The
16K
the
CMOS RAM Memory Modules
(cat.
nos. 1 772-ME
These
state
circuitry
information.
backup
words for
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CMOS RAM memory modules
Random
needed to store
Each
support.
the
1 772-ME
and
1772-MEB)
Access Memory (RAM)
and
retrieve
contains a battery
Maximum
memory
and
16K words
support
and
contains
memory
pack
for memory
capacity
with
removable solid
support
is 8K
the
(K=
1024)
1 772-MEB.
Chapter 2 Hardware
The
following memory
with
the
CMOS RAM memory module:
o
512
word memory
o
2048
(2K) word memory
o
8192
(8K) word memory
segments
segment
segment
segment
(figure 2.3)
are
used
(cat. no. 1772-MT)
(cat. no. 1 772-MS)
(cat. no. 1772-MS8)
2-5
Combinations
of
up
to a
maximum
possible (for example: a 2K 1772-MS
provide 10K words
to 8K words
using
the
Memory
can
be secured to
when
1772-MEB.
segments
of
storage). However, you
using
1772-MS
the
the
1772-ME
and
1772-MT
memory module
screws.
Figure2.3
Memory Segment
Cat. No.
1772-MS, -MS8
of
four
and
and
with
segments
an
8K 1 772-MES
are
limited
16K words
have
a case
mounting
are
when
that
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2-6
Chapter
2 Hardware
Battery
A
Battery
mounted
housing
or
housing
battery
Backup
will hold two
one
Lithium
provides a
backup
on
power from
Figure 2.4
Memory
Module Showing Battery
(cell)
Housing
the
memory module (figure 2.4).
(cat. no. 1 772-B
alkaline
cell (cat. no. 1770-XO).
convenient
the
power to
power
guard
supply
Holder
1)
is
shipped
This
battery
cells (cat. no. 1771-BA)
The
battery
storage
against
is
interrupted.
location for
loss
of
memory
if
You
may
use lithium cells with:
o 1772-ME, Revision K
o
any
1772-MEB, -MES
A
lithium
memory
is
not
You
may
o 1772-ME,
o
any
cell provides
backup
at a maximum
rechargeable.
use alkaline cells with:
all
revisions
1 772-MEB, -MES
approximately
or
later
or
-ME16 memory modules.
two
years
of
60°C
or
-ME 16 memory modules
(140°F).
106159
of
This
cell
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Chapter 2 Hardware
2-7
Two D-size
provide
at
600C (1400F)
alkaline
(Panasonic) cells (figure 2.5).
approximately
or
approximately
six
months
of
battery
12
months
(1130F).
Figure2.5
Battery Housing Showing Two Alkaline Cells Installed
If
the
battery
different
polarity
the
battery
housing
configuration,
will
be
clearly
holder.
has
a
correct
labeled
in
Orientation
backup
at
450C
+
time
The
one D-size
approximately 2 years
maximum
Figure2.6
Battery Housing Showing a Lithium Cell Installed
lithium
of
600C (1400F).
Orientation
cell (figure 2.6) cell provides
of
battery
+
backup
If
the
different
polarity
the
battery
time
battery
housing
configuration.
will
be
holder.
at
a
clearly
10622
has
a
correct
labeled
in
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10623
2-8
Chapter 2 Hardware
Regardless
rechargeable.
intervals.
flashing,
further
predicted. To avoid loss
changes,
the
memory
chassis
CAUTION: Memory
cell
or
off. You
stored
of
cell type used,
Replace
When
replace
minimum
be
sure
module is firmly
when
cells
data
when
must
is
you
re-enter
lost.
they
are
these
the
STANDBY LOW
the
battery
life
of
the
processor is receiving power
cells
the
battery
of
memory
as
at
soon
seated
change
the
the
contents
power
the
entire
battery.
are
altered
supply
memory
Memory Write Protect
If
the
memory
write
protect
jumper
removed from a 1772-LH processor
table
values
changed
or
RUN/PROGRAM modes
but
between
only
when
address
the
processor is
using
OlOg
on-line
not
periodic
indicator
as
possible,
cannot
during
starts
as
be
battery
and
in
the
processor
if
you remove
is powered down
contents
(figure 2. 7)
interface
and
377g
in
data
is
module,
can
the
PROGRAM
change.
be
the
or
if
data
The
remaining
memory,
including
protected
memory
write
unintentional
Figure 2.7
Memory Write Protect Jumper
and
words
data
cannot
protect
changes
in
be
feature
memory
table
altered
to
processor memory.
from
and
user
by
programming.
guards
against
400g
to
program,
the
end
are
The
of
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Chapter 2 Hardware
2.2
Common Equipment
2-9
2.2.1
Processor Chassis
There
2/20
are
three
pieces
of
(1772-LP2, -LP2D4)
equipment
and
PLC-2/30 (1772-LP3, -LP3D4)
controllers. They are:
o Processor
Chassis
o Processor Interface Module
Power
o
Important:
below.
Supply
Only series C, AC supplies
See section 2.7.3 for
information
series.
The
Processor Chassis (cat. no. 1772-LA) is
construction
sides, top,
There
are
processor chassis.
the
chassis
The
other
of
plastic
with
louvers,
and
bottom to allow convection cooling.
two types of module
The
is only for
three
and
tracks
are
for
metal
the
system
in
the
the
remaining
or
holes,
track
chassis
tracks
common to
are
cut
into
located
on
the
power
supply
are
on
left side
constructed
the
discussed
earlier
of
rugged
the
in
the
module.
processor modules.
PLC-
of
2.2.2
Processor Interface Module
The
occupies
the
module
between
industrial
On
15-pin
position mode select switch (figure 2.1).
Interface
The
links
end
1772-TC)
attaches
or
with
Processor Interface Module (cat. no. 1772-LH)
the
right)
contains
left-most
in
the
the
processor,
plastic
processor
the
circuitry
user
slot
(third
chassis
(figure 2.3).
used for
communication
inputs/outputs,
slot from
This
and
the
terminal.
the
front
panel
and
a 50-pin), two indicators,
of
this
module
are
two sockets
and
(a
a four-
Sockets
15-pin socket labeled PROGRAM PANEL (Figure 2.9)
the
processor
of
the
Program
attaches
to
the
a 1784-T45
6201
or
with
its
Panel
to
Industrial
or
a 1784-T50 or
Interconnect
this
socket
Terminal
6211 software.
programming
Cable (cat. no.
and
the
(cat. no. 1770-T3)
other
IBM PC-compatible
terminal.
other
end
One
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2-10
Chapter
2 Hardware
The
50-pin
Interconnect
Processor/Scanner
1
772-CS).
processor to
2/30
110
chassis
Cable (cat. no.
Either
Interconnect
of
which
the
Indicators
DC
ON
INDICATOR--
illuminates
2.1)
to
the
system
RUN
INDICATOR--
only be
on
if
when
power
the
module select
RUN/PROGRAM position.
socket accepts
1777
links
110
system.
This
front
the
appropriate
supply
This
module.
indicator
switch
the
-CA, -CB)
cable
(cat.
the
PLC-2/20
panel
power is
(figure 2.1)
is
110
or
the
no.
or
indicator
applied
should
in
the
RUN
PLC-
(figure
or
Mode
Select
Switch
A four-position mode select
front
panel
positions
o PROG
program
o
TEST-operations
Your
position
o
RUN-executes
memory.
in
o RUN/PROG --In
that
Additionally, you
REMOTE
the
of
the
and
their
--Program
instructions.
Test
under
output
but
the
In
this
the
Outputs
accordance
apply
in
TEST
industrial
processor
functions
position is
position is
simulated
devices
are
program
position,
user's
program
will be energized
with
the
this
the
RUN
can
mode
terminal.
switch
interface
is
located
module.
on
The
the
four
are:
used
when
used
to
test
operating
disabled
will
the
user's
position,
position
change
or
REMOTE PROGRAM LOAD mode
in
respond
processor
that
is
program.
all
of
also apply.
the
processor to
entering
program
conditions.
this
switch
to
inputs.
scans
contained
and
de-energized
the
functions
and
in
with
The
key
can
be removed
in
any
of
the
above
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when
mentioned
the
mode select
positions.
switch
is
Chapter 2 Hardware
2.2.3
System Power Supply Module
The
System
C, 120/220V AC; 1772-P4, 24V DC) occupies
slot
(metal)
(This
modules.)
voltages
and
110
rear
socket located on
(figure 2. 9).
from
and
is
to
power logic
processor
use
either
power
Figure 2.8
System
C)
slot
Power
in
will
The
into
the
not
accept
system
the
proper
Supply
Module (cat. no.
processor
any
power
DC voltages for
chassis. A single connector
of
this
module (figure 2.8)
the
processor
This
connector provides
the
power
capable
contains
an
I/0
Power
an
AC
chassis.
Supply
supply
of
supplying 4 amperes
circuitry
to
in
the
the
a CMOS RAM memory module, you
or
DC
system
Module-
Side View (cat. no. 1772-P1, Series
chassis
of
the
supply
and
chassis
other
110
modules.
power
1772-Pl
the
series
left-most
(figure 2.2).
other
converts
extends
plugs
processor
input
the
processor
from
into
~
the
backplane
the
power
link
processor modules
of
output
supply
If
the
which
current
may
2-11
may
@
®
()
~
0.5 AMP
Fuse
0.5 AMP
Fuse
---i
0
0
10666
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2-12
Chapter 2 Hardware
Figure 2.9
Power
Supply Backplane Socket
Power
Supply
Cable
S_ocket
iO
/
The
power
levels (98 to 132V
250V
24V DC operation).
the
minimum
the
DC
in
the
shut
down.
the
AC voltage drops to 92V (184V for 220/240V
operations
communication
get too low to
voltages
voltage level
On
the
processor fuse, two sockets for
terminal
module
circuitry
supply
AC
for 220/240V
rated
input
line drops
24V DC
The
or
20.5V
transmit
are
re-established
returns.
front
of
strip.
are
two fuses
against
monitors
AC
If
the
input
for 120V
AC
operation
the
AC line voltage drops below
voltage for more
out
of
range
input
power
DC
with
version,
supply
the
signals
for 24V DC operation) to stop
the
110
chassis
valid
data.
when
the
power supply module
the
On
the
left side
that
of
protect
overload conditions.
AC
operation,
than
for more
DC
before
The
the
correct
I/0
the
the
voltage for
or
output
the
DC
chassis
power
DC
proper
196 to
20.5 to 32V
one cycle
than
voltages
processor
signal
levels
output
input
are
the
and
a
supply
power
10665
DC
or
if
15ms
are
when
for
Input
The
protected to
the
it
possible
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input
input
with
Fuse
circuitry
guard
line.
one
of
equipment
When
the
same
of
the
against
replacing
size
damage.
power
supply
overcurrent
this
and
rating
is fuse
conditions on
fuse always replace
to avoid
Chapter 2 Hardware
110
Chassis
Power Sockets
2-13
These
connected to
against
An
Power Cable (cat. no. 1771-CK) is
power
Terminal
Input
labeled
given
WARNING: Connect wires only
of
may
two sockets provide power to
them.
improper
8-foot Power Cable (cat. no. 1771-CJ)
supply
Strip
power connections
Ll
and
in
Section 3,
the
terminal
result
in
These sockets
connection (figure 2.1).
with
an
I/0
chassis.
are
made
L2.
Proper
Installation.
strip.
equipment
connection
Failure
damage
to
to
observe
DC Power Protection
On
the
left side
from
the
front)
overcurrent
circuits
removing
DC
edge)
amperes
(figure 2.8). These fuses
the
circuit
and
the
(located
of
the
power
are
two fuses
condition
fuse access cover.
is 0.5
fuse for
on
amperes
the
near
the
supply
that
both
the
The
(located
-5.1 V DC
bottom
the
are
keyed to
used
to
the
information
the
two
and/or
module
guard
+ 12V DC
are
accessed
fuse for
near
circuit
front
I/0
chassis
or
a 3-foot
to
interface
terminals
outer
this
warning
personal
(as
against
and
by
the
the
top
is 0.5
edge).
guard
the
is
terminals
injury.
viewed
-5.1 V DC
+ 12V
front
2.3
110
System Structure
l/0
system
chassis
links
system
o Local (3 - 6 ft./.9 - 1.8 m)
o Remote
o LocalJRemote
Local
A local
feet).
connected to
or
1777-CB (6 ft./1.8 m).
contain
structure
to
the
processor. Because
are
distance
will
have
System
system
Up
to 7 chassis
a 1771-AL Local
dependant, a programmable
one
(6-10,000 ft./
combination
Structure
has
each
other
refers to
of
these
only
nearby
may
through
1.8-
be assigned.
Of
I/0
the
proximity
data
communication
structures:
3048 m)
I/0
chassis
1777-CA (3 ft./.92 m)
course,
adapter.
each
(3-6 cable
Chassis
chassis
of
the
controller
are
must
I/0
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2-14
Chapter 2 Hardware
Remote
A remote system allows
chassis
(approx.
System
to be
Structure
separated
3048 meters).
the
processor
by
up
to 10,000 cable feet
Up
to 7 remote
and
1/0
assigned.
Proper
or
transmission
the
PLC-2/30 processor
of
data
and
between
remote
either
bulletin
modules requires a 1772-SD2 Remote 1/0
Scanner/Distribution
Adapter
processor
interconnect
in
each
and
the
cable. Connection from
1771-ASB Remote
adapter
interconnect
LocalJRemote
The
with
to
another
cable.
System
PLC-2/30 processor system
a combination of local
A local/remote system
and
local
limit
remote
and
the
(up
7 remote racks
total
to seven
Panel
1/0
chassis. Connection between
1 772-SD2 is
plus a 1771-ASB Remote
through
the
I/0
Adapter
is
through
and
from one remote 1/0
1770-CD
Structure
can
also be configured
and
remote
has
both
nearby
to 10,000 cable-ft)
may
or
less.)
I/0
chassis.
be assigned. (You
a 1 772-CS
twinaxial
I/0
(3-6 cable-ft)
the
IiO
racks
the
PLC-2/20
1771
may
be
110
the
1772-SD2 to a
chassis.
Up
to 2
must
Each
local chassis
Adapter
module. And,
communication
requires
a 1772-SD2 Remote
1771-ASB Remote
Up
to two local
Remote
local
Distribution
110
chassis is made
must
with
110
1/0
have
as
previously
the
remote chassis (one or more)
Adapter
chassis
may
panel. Connection to
with
cable.
Important:
feet from
The
1772-SD2
its
processor module.
must
CAUTION: For proper system
local/remote system
must
use
a 1777-CA cable (3 ft./.92m) between
processor
and
the
cable between
must
also use
second local
the
rack
structure
first
local
rack
the
first
and
second local racks. You
1772-CS cable (3 ft./.92m) from
to
the
distribution
a 1771-AL Local
stated,
Distribution
in
each
precede
panel
chassis.
the
the
a 1772-CS
not
data
communications a
with
2 local racks, you
and
interconnect
be more
another
panel.
110
and
one
1772-SD2
preceding
than
10 cable
the
1777-CA
the
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2.4
110
Chassis Structure
2.4.1
110
Chassis
Chapter 2 Hardware
An
I/0
o
o
o
structure
At
least
-A3B
At
or
I/0
or
least
1771-ASB)
modules
contains
one
I/0
-A4B)
one
I/0
Chassis
Adapter
o And for remote systems:
Distribution
Remote
You
must
bulletin
specify
1771
110
110
panel
Adapter
each
of
chassis.
the
following.
(cat.,no. 1771-A1B, -A2B,
Module (cat. no. 1771-AL
at
least
one
110
(cat. no. 1772-SD2)
(cat. no. 1771-ASB).
these
units
when
Scanner/
and
one
ordering a
2-15
The
110
chassis is a single
for
the
I/0
adapter
the
I/0
structure.
the
same
enclosure used for
processors.
Slots
in
the
insertion
PLC-2
slots to
There
Consistent
of
J/0
adapter
the
are
four
chassis design
(figure 2.1 0).
is
used
and
chassis
rewiring.
wiring
chassis
the
modules
chassis,
user
(8-, 12-
arms
and
larger
the
I/0
devices
User
chassis. Also,
are
changed.
module
It
has
110
chassis
modules.
module (1771-AL
right
accept
110
chassis sizes
If
a 4-slot, 8-slot
more
I/0
points
or
16-slot)
wiring
which
snapped
placed
can
onto
in
originally
are
still
compact
and
containment/support
I/0
modules
been designed to
the
PLC-2/20
allow for quick,
The
left
most
slot
or
110
modules.
available
permits
are
can
is connected to
controller
or
12-slot
needed, a
be
installed
terminals
be removed from
the
corresponding positions
when
wiring
arms
corresponding slots
programmed
valid
addresses of
and
need
that
fit
within
or
PLC-2/30
easy
accepts
-ASB)
the
and
(table 2.B).
expansion
chassis
larger
without
the
smaller
and
on
the
not
be
make
all
on
I/0
larger
the
up
of
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2-16
Chapter 2 Hardware
Figure 2.10
110
Chassis· Sizes
r;:;=Ti=~....,..---:=-:r--"T"':::-::::::!5!:N
0 0
4-slot 8-slot I 12-slot 1 6-slot
l.l!::::::r--------=:!5-------J=-'-------
\-..
___
'"""
,_
___
--·---
...JI
-~.-::.,:---------1:::-,----------~...
I f f
t-'
, -
I
I
I
I
I
'
I
I
I
J
(
I
__
v
Cat. No. 1771-A
'-----------
Cat. No. 1771-A2, -A2B
1,
-A 1 8
~--------~/
v
1
c-
J -
</
..I:_--------
__
....
-
·-,
t_
I"_J
1
Cat. No. 1771-A3B
Cat. No. 1771-A4, -A4B
Table
2.8
110
Chassis Sizes
Cat.
No.
1771-AlB
1771-A2B
1771-A3B
1771-A4B
1/0
Slots
4
8
12
16
Number
8-pt.
32
64
96
128
of
l/0
Per
Module
16-pt. 32-pt.
64
128
192
256
128
256
384
512
13072
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Chapter 2 Hardware
The
backplane
of
the
module, a socket for power
switch
snap
provide
group
assembly.
down to hold
labeling
for
the
easy
110
chassis
supply
Latches
has
sockets for
connection,
on
top
modules securely
module identification.
of
in
the
place
each
and
a
chassis
and
2-17
A package
shipped
is
are
used to
is placed
Local
For
and
chassis
110
proper
local
must
1771-AL).
The
1/0
adapter
110
chassis
Figure 2.11
1771-AL
Local
of
110
Rack Keying
with
each
110
chassis
ensure
in
to a
Adapter
transmission
110
used
110
that
only a
particular
Module
of
modules (6 cable feet
contain
Adapter
an
110
module
with
must
a processor (figure 2.11).
Module
Bands
assembly. These
user
keyed slot.
(Cat.
No. 1771-AL)
data
between
or
Adapter
be
installed
(cat. no. 1777-RK)
bands
designated
the
less),
module
processor
the
1/0
Module (cat. no.
in
each
local
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