Allen-Bradley 1769-ASCII Bedienungsanleitung
Publication 1769-IN068B-EN-P - May 2005
Installation Instructions
Compact 1769-ASCII Module
Cat. No. 1769-ASCII
Inside…
About the Module ............................................................................................4
Install the Module.............................................................................................5
Assemble the System........................................................................................6
Mount Expansion I/O ....................................................................................8
Ground the Module........................................................................................12
Connect the D-sub Connector Pins ............................................................13
I/O Memory Mapping...................................................................................16
Configure the 1769-ASCII Module .............................................................25
Specifications...................................................................................................29
Status Indicators..............................................................................................32
Troubleshoot with Error Codes ...................................................................33
2Compact 1769-ASCII Module
Publication 1769-IN068B-EN-P - May 2005
Important User Information
Because of the variety of uses for the products described in this publication,
those responsible for the application and use of these products 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. In no event will
Rockwell Automation be responsible or liable for indirect or consequential
damage resulting from the use or application of these products.
Any illustrations, charts, sample programs, and layout examples shown in this
publication are intended solely for purposes of example. Since there are many
variables and requirements associated with any particular installation,
Rockwell Automation 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
Rockwell Automation office), describes some important differences between
solid-state equipment and electromechanical devices that 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
part, without written permission of Rockwell Automation, is prohibited.
Throughout this publication, notes may be used to make you aware of safety
considerations. The following annotations and their accompanying statements
help you to identify a potential hazard, avoid a potential hazard, and recognize
the consequences of a potential hazard:
WARNING Identifies information about practices or circumstances that can
cause an explosion in a hazardous environment, which may lead
to personal injury or death, property damage, or economic loss.
ATTENTION Identifies information about practices or circumstances that can
lead to personal injury or death, property damage, or economic
loss.
Compact 1769-ASCII Module 3
Publication 1769-IN068B-EN-P - May 2005
IMPORTANT Identifies information that is critical for successful application
and understanding of the product.
ATTENTION Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications
(as defined in IEC publication 60664-1), at altitudes up to 2000
meters without derating.
This equipment is considered Group 1, Class A industrial
equipment according to IEC/CISPR Publication 11. Without
appropriate precautions, there may be potential difficulties
ensuring electromagnetic compatibility in other environments
due to conducted as well as radiated disturbance.
This equipment is supplied as “open type” equipment. It must
be mounted within an enclosure that is suitably designed for
those specific environmental conditions that will be present and
appropriately designed to prevent personal injury resulting from
accessibility to live parts. The interior of the enclosure must be
accessible only by the use of a tool. Subsequent sections of this
publication may contain additional information regarding
specific enclosure type ratings that are required to comply with
certain product safety certifications.
NOTE: See NEMA Standards publication 250 and IEC
publication 60529, as applicable, for explanations of the degrees
of protection provided by different types of enclosure. Also, see
the appropriate sections in this publication, as well as the
Allen-Bradley publication 1770-4.1 (“Industrial Automation
Wiring and Grounding Guidelines”), for additional installation
requirements pertaining to this equipment.
4Compact 1769-ASCII Module
Publication 1769-IN068B-EN-P - May 2005
About the Module
The 1769-ASCII module provides a flexible network interface to a wide
variety of RS-232, RS-485, and RS-422 ASCII devices. The module provides
the communication connections to the ASCII device.
Item Description
1a Upper DIN rail latch
1b Lower DIN rail latch
2a Upper tongue-and-groove slots
2b Lower tongue-and-groove slots
3a Channel 0 isolated ASCII
connector
3b Channel 1 isolated ASCII
connector
4Stationary bus connector with
male pins
1a
2a
3a
3b
1b
2b
2a
2b
4
Compact 1769-ASCII Module 5
Publication 1769-IN068B-EN-P - May 2005
Install the Module
Compact I/O is suitable for use in an industrial environment when installed
in accordance with these instructions. Specifically, this equipment is intended
for use in clean, dry environments (Pollution Degree 2(1)) and to circuits not
exceeding Over Voltage Category II(2) (IEC 60664-1).(3)
(1) Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except
that occasionally a temporary conductivity caused by condensation shall be expected.
ATTENTION Preventing Electrostatic Discharge
This equipment is sensitive to electrostatic discharge, which can
cause internal damage and affect normal operation. Follow these
guidelines when you handle this equipment:
•Touch a grounded object to discharge potential static.
•Wear an approved grounding wriststrap.
•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•If available, use a static-safe workstation.
When not in use, store the equipment in appropriate static-safe
packaging.
WARNING If you connect or disconnect the serial cable with power applied
to this module or the serial device on the other end of the cable,
an electrical arc can occur. This can cause an explosion in
hazardous locations. Be sure that power is removed or the area is
nonhazardous before proceeding.
(2) Over Voltage Category II is the load level section of the electrical distribution system. At this level
transient voltages are controlled and do not exceed the impulse voltage capability of the product’s
insulation.
(3) Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
6Compact 1769-ASCII Module
Publication 1769-IN068B-EN-P - May 2005
Assemble the System
Attach the module to the controller or an adjacent I/O module before or
after mounting. For mounting instructions, see the Panel Mount or Mount on
the DIN Rail sections. To work with a system that is already mounted, see
Replace a Single Module Within a System section.
ATTENTION This product is grounded through the DIN rail to chassis
ground. Use zinc-plated, yellow-chromate steel DIN rail to
assure proper grounding. The use of other DIN rail materials
(e.g., aluminum, plastic, etc.), which can corrode, oxidize, or are
poor conductors, can result in improper or intermittent
grounding.
6
5
4
3
1
1
2
Compact 1769-ASCII Module 7
Publication 1769-IN068B-EN-P - May 2005
1. Disconnect power.
2. Check that the bus lever of the module to be installed is in the
unlocked (fully right) position.
3. Use the upper and lower tongue-and-groove slots (1) to secure the
modules together or to a controller.
4. Move the module back along the tongue-and-groove slots until the
bus connectors (2) line up with each other.
5. Use your fingers or a small screwdriver to push the bus lever back
slightly to clear the positioning tab (3).
6. To enable communication between the controller and module, move
the bus lever fully to the left (4) until it clicks.
Ensure it is locked firmly in place.
ATTENTION Remove power before removing or inserting this module. When
you remove or insert a module with power applied, an electrical
arc may occur. An electrical arc can cause personal injury or
property damage by:
•sending an erroneous signal to your system’s field devices,
causing unintended machine motion
•causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create
electrical resistance.
ATTENTION When attaching I/O modules, it is very important that the bus
connectors are securely locked together to ensure proper
electrical connection.
8Compact 1769-ASCII Module
Publication 1769-IN068B-EN-P - May 2005
7. Attach an end-cap terminator (5) to the last module in the system by
using the tongue-and-groove slots as before.
8. Lock the end-cap bus terminator (6).
Mount Expansion I/O
Minimum Space
Maintain spacing from enclosure walls, wireways, adjacent equipment, etc.
Allow 50 mm (2 in) of space on all sides for adequate ventilation.
IMPORTANT You must use a 1769-ECR or -ECL right- or left-end cap to
terminate the end of the serial communication bus.
ATTENTION During panel or DIN rail mounting of all devices, be sure that all
debris (metal chips, wire strands, etc.) is kept from falling into
the module. Debris that falls into the module could cause
damage on power up.
IMPORTANT When mounting the CompactLogix system, either use screws
to panel mount the system OR use DIN rail. Do NOT use
both. Use of both mounting methods may cause hardware
damage and cause the system to fail.
Controller
Compact I/O
Compact I/O
Compact I/O
Compact I/O
Compact I/O
End Cap
Top
Bottom
Side Side
Compact 1769-ASCII Module 9
Publication 1769-IN068B-EN-P - May 2005
Panel Mount
Mount the module to a panel by using two screws per module. Use M4 or #8
panhead screws. Mounting screws are required on every module.
Panel Mount Procedure With the Dimensional Template
Panel Mount Procedure With Modules as a Template
The following procedure lets you use the assembled modules as a template for
drilling holes in the panel. Due to module mounting hole tolerance, it is
important to follow these procedures.
1. On a clean work surface, assemble no more than three modules.
2. Using the assembled modules as a template, carefully mark the center
of all module-mounting holes on the panel.
3. Return the assembled modules to the clean work surface, including
any previously mounted modules.
4. Drill and tap the mounting holes for the recommended M4 or #8
screw.
Host Controller
Compact I/O
Compact I/O
Compact I/O
Right End Cap
NOTE: All dimensions
are in mm (inches). Ho
le
spacing tolerance:
±0.4 mm (0.016 in.)
F
or more than 2 modules: (number of modules - 1) X 35 mm (1.38 in.)
Refer to host controller documentation for this dimension.
132
(5.197)
122.6±0.2
(4.826±0.008)
35
(1.38)
28.5
(1.12)
10 Compact 1769-ASCII Module
Publication 1769-IN068B-EN-P - May 2005
5. Place the modules back on the panel, and check for proper hole
alignment.
6. Attach the modules to the panel using the mounting screws.
If mounting more modules, mount only the last one of this group and
put the others aside. This reduces remounting time during drilling and
tapping of the next group.
7. Repeat steps 1 to 6 for any remaining modules.
Mount on the DIN Rail
The module can be mounted on these DIN rails:
•35 x 7.5 mm (EN 50022 - 35 x 7.5)
•35 x 15 mm (EN 50022 - 35 x 15)
Before mounting the module on a DIN rail, close the DIN rail latches. Press
the DIN rail mounting area of the module against the DIN rail. The latches
will momentarily open and lock into place.
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