Allen-Bradley DeviceNet Serial Interface Installation Instructions

Installation Instructions
DeviceNet Serial Interface Module
Catalog Number 1799-DASCII
Topic
Page
Important User Information
2
Environment and Enclosure
3
Prevent Electrostatic Discharge
3
About the Module
4
Install the Module
5
Set the Node Address
5
Mount the Board
6
Product Dimensions
7
Set Up the DeviceNet I/O Connections
7
DeviceNet Wiring
10
Serial Port DB9 Wiring
10
Set Software Parameters +
12
Configuring the Parameters
19
Set Up the Serial Link
19
Receive Serial Data from the ASCII Device
21
Produce Received-serial Data onto DeviceNet Network
23
Set Up and Use Pad Mode (parameters 11 and 12)
24
Set Up and Use the Swap Bytes Mode (parameter 13)
25
Serial Status Byte Description and Transmission
27
Consume Data Assembly Formats from DeviceNet Master
28
Transmit Serial Data to the ASCII Device
30
Status Indicators
32
Specifications
33
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DeviceNet Serial Interface Module
Important User Information
Solid state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication
SGI-1.1 available from your local Rockwell Automation sales office or online at
http://literature.rockwellautomation.com) describes some important differences between solid state
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the
wide variety of uses for solid state equipment, all persons responsible for applying this equipment must
satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
WARNING
IMPORTANT
ATTENTION
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.
Identifies information that is critical for successful application and understanding of
the product.
Identifies information about practices or circumstances that can lead to personal injury
or death, property damage, or economic loss. Attentions help you identify a hazard,
avoid a hazard and recognize the consequences.
SHOCK HAZARD
Labels may be on or inside the equipment (for example, drive or motor) to alert people
that dangerous voltage may be present.
BURN HAZARD
Labels may be on or inside the equipment (for example, drive or motor) to alert people
that surfaces may reach dangerous temperatures.
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Environment and Enclosure
ATTENTION
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 m (6562 ft.) 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. The enclosure must have suitable flame-retardant properties to prevent or
minimize the spread of flame, complying with a flame spread rating of 5VA, V2, V1, V0 (or
equivalent) if nonmetallic. Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to comply with
certain product safety certifications.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley publication
1770-4.1, for additional installation requirements.
• NEMA Standards publication 250 and IEC publication 60529, as applicable, for
explanations of the degrees of protection provided by different types of enclosure.
Prevent Electrostatic Discharge
ATTENTION
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.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
ATTENTION
To comply with the CE Low Voltage Directive (LVD), the DeviceNet network must be
powered from a source compliant with Safety Extra Low Voltage (SELV) or Protected
Extra Low Voltage (PELV).
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DeviceNet Serial Interface Module
ATTENTION
To comply with UL restrictions, the DeviceNet network must be powered from a source
compliant with a Class 2 or UL Listed/recognized power supply with isolated outputs
limited to 200 volt-amperes in each ungrounded output line. This equipment and its
power source must be mounted in a suitable enclosure with proper spacings maintained.
About the Module
The 1799-DASCII module provides DeviceNet system interoperability to one RS-232
or multiple RS-485 devices that do not have DeviceNet network capability. The
DeviceNet port (J1) provides power to the module and DeviceNet network
communication. The serial communication port (J2) is isolated from the DeviceNet
network and the module logic power.
J1
J2
44322
The 1799-DASCII module supports modes of data transfer of the serial buffer that
include the following:
• Polled I/O
• Change-of-State I/O
• Cyclic I/O
• Explicit Message
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Mating connectors and mounting hardware are optional and must be ordered
separately. This table identifies these optional connectors and hardware.
Optional Connectors and Hardware
Option
Catalog Number
Supplier and Part Number
2 DIN-rail brackets (4 screws)
1799-BRKD
N/A
5-position, open-style plug for DeviceNet
network (2 locking screws)
1799-DNETSCON
DeviceNet Buyer’s Guide at
http://www.odva.org
Your package contains:
• one 1799 I/O board.
• installation instructions.
Install the Module
Follow these steps to install the module.
1. Set the node address.
2. Mount the board by using brackets or mounting screws.
3. Connect serial communication cable (232 or 485) to DB9 connector.
4. Connect the DeviceNet network and DeviceNet power to the unit.
5. Configure the parameters.
Set the Node Address
Valid node addresses are 00…63.
Set the node address by using the rotary switches or a DeviceNet configuration tool
such as RSNetWorx for DeviceNet software. The software has address control when
you set the switches to 64…99.
Each board is shipped with the node address set to 63 in the board’s memory;
rotary switches are shipped with the node address set to 99. The switches are near
the center of the board. The two switches are as follows:
• MSB (most significant bit)
• LSB (least significant bit)
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DeviceNet Serial Interface Module
To reset the node address, use a screwdriver to rotate the switches. Align the small
arrow on the switch with the number setting you wish to use.
MSB
The LSB and MSB switches are
shown in the 63 position.
LSB
42558
The rotary switches are read when you apply power to the board. The board uses
the last valid node address stored in board memory when you set the switches to
64…99. For example, the last setting in memory is 40. If you change the switch
setting to 68 and apply power to the board, the address defaults to 40.
The board is equipped with AutoBaud detect. With AutoBaud, the board detects
the communication rate on your DeviceNet network and automatically adjusts to
that rate. The board is shipped with AutoBaud enabled.
Mount the Board
You can mount the board to a DIN rail by using DIN-rail brackets (catalog
number 1799-BRKD) or to a mounting plate.
44623
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You can also mount the board in an enclosure with pretapped holes to
accommodate M3 x 0.5 mm screws.
Product Dimensions
See the drawing that shows product dimensions.
Dimensions are in mm (in.).
127 (5.0)
mm
(in.)
11.43
(0.45)
67.3 (2.625)
50.8
(2.00)
18.8
(0.74)
16
(0.63)
31.75 (1.25)
67.3 (2.625)
44323
Set Up the DeviceNet I/O Connections
Set up the serial link before setting up the connection. To set up communication
with the network configuration tool, you typically need to know the connection
input and output sizes.
See Set Up the Serial Link on page 19 for instructions on setting up the serial
connection and receive and transmit sizes.
If you are using a network configuration tool with some type of scanner or
scanning software, the scanner must be directed to set up the connections. This
often requires some device information, such as input and output sizes. The input
and output sizes are computed from the transmit and receive sizes. These sizes are
defined in the parameter object of the device. The transmit size of the poll
connection is computed by adding 2 to the transmit buffer size on the 1799-DASCII
module. The transmit size for the change-of-state and cyclic connections are set to
0, because these connections do not initiate a transmission on the serial link. The
receive size of all three connections is computed by adding the number of option
bytes to the receive buffer size.
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DeviceNet Serial Interface Module
IMPORTANT
Remember to remap the data (if necessary) after setting the sizes, because
many configuration tools automatically unmap data when the connection sizes
change.
The 1799-DASCII module supports modes of data transfer of the serial buffer that
include the following:
• Polled I/O
• Change-of-state I/O
• Cyclic I/O
• Explicit Message
Polled I/O
The polled connection is the only way you can send serial output data to the I/O
and I/O devicce. The DeviceNet master initiates the polled connection transfer.
The master sends the 1799-DASCII module its serial output buffer with a record
number and length byte. The 1799-DASCII module monitors the record number for
a change. If the record number changes, the 1799-DASCII module transmits the
data buffer on its serial link. If the record number does not change, the device
does not transmit the data buffer.
After the device has transmitted its data out to the serial link, the 1799-DASCII
module takes any information that is stored in its current serial input buffer and
sends this data to the DeviceNet master. It sends all characters up to and including
the received delimiter, padding only if specified in the parameter object. When the
1799-DASCII module receives a new message with a delimiter or with an overflow
condition without a delimiter), the device increments the receive record, updates
the length byte, and copies the new information from the last receive delimiter into
the buffer. If an overflow occurs, the 1799-DASCII module indicates so in its
receive status bit. The receive status byte also reflects other errors in the device.
Cyclic I/O
The cyclic connection initiates a transmission every time the connection timer
expires. The cyclic connection can only send data from the 1799-DASCII module. If
you need to transmit on the I/O link, the polled connection is necessary. The
polled and cyclic connections can exist simultaneously. The manner in which
cyclic connection reports its data is the same as the polled connection. The cyclic
connections transmit buffer is the same as the polled connections transmit buffer,
so overflows and received delimiters act the same over any connection.
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Change-of-State I/O
The change-of-state (COS) connection is the same as the cyclic connection except
that the COS connection also initiates a transfer on the receipt of the delimiter or an
overflow. The COS connection is mutually exclusive with the cyclic connection,
but can coexist with the polled connection. The COS connection operation is
useful in conserving bandwidth and provides the master with the most current data
as fast, or faster, than a poll connection. The COS connection automatically turns
on the COS mechanism when the connection is created.
Set Up the Connection Timer
The 1799-DASCII module sets the connection timer to the expected packet rate
(EPR), sometimes referred to as scan rate, value for the cyclic and polled
connection. It also uses this value in the connections to calculate the time the
device waits before signaling a timeout. If you are using a scanner or scanning
software, the EPR must be configured. The scanner configures the EPR in the
1799-DASCII module at the beginning of communication. Refer to the scanner
manual for how to configure the EPR.
IMPORTANT
The EPR can be set manually by performing a set (Service 10hex) on the
connection class (Class 5hex) attribute 9. The polled connection uses
instance 2. The COS and cyclic connections use instance 4. This must be done
after allocating the connection.
Serial Data Strings and the Scanner's I/O Rate
Serial gateways typically use more bandwidth on the DeviceNet bus than other
types of I/O devices. If long data strings are implemented and/or multiple devices
are on the DeviceNet network, make sure the scan rate is set accordingly.
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DeviceNet Serial Interface Module
DeviceNet Wiring
DeviceNet wiring connections are made to the plug-in connector. The connector
plugs into connector J1 on the circuit board.
Network Connector (female contacts)
5 V+
4 CAN_H
3 Drain
2 CAN_L
1 V-
Red
White
Bare
Blue
Black
Network Connector (male contacts)
Serial Port DB9 Wiring
The module operates as an RS-232 or RS-485 device, depending on how the serial
communication lines are attached. For information about serial port connections,
see the DB9 9-Pin Connector Signal Assignments table and description. All signal
lines are isolated.
Serial Port Connection
The ASCII devices are connected to the 1799-DASCII module by using a three-wire
(or five-wire for RS232 hardware handshaking) communication cable.
DB9 9-Pin Connector Signal Assignments
Pin
RS-232
1
RS-485
TRXD-
2
RX
3
TX
4
5
Common
Common
6
7
RTS
8
CTS
9
TRXD+
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RS-232 without Hardware Handshaking
Follow these steps to connect the RS-232 wiring without hardware handshaking.
1. Connect the receive wire to pin 2 (RXD).
2. Connect the transmit wire to pin 3 (TXD).
3. Connect common to pin 5 (common).
The channel automatically operates in RS-232 mode when these pins are
connected.
The RS-232 electrical interface uses a MAX232 transceiver or electrical equivalent.
IMPORTANT
All pins are active. Do not connect to other pins.
RS-232 with Hardware Handshaking
When implementing RTS/CTS handshaking, follow these steps to connect RS-232
wiring.
1. Connect receive to pin 2 (RXD).
2. Connect transmit to pin 3 (TXD).
3. Connect transmit/handshaking to pin 7 (RTS).
4. Connect receive/handshaking to pin 8 (CTS).
5. Connect common to pin 5 (Common).
The channel automatically operates in RS-232 mode when these pins are
connected.
IMPORTANT
All pins are active. Do not connect to other pins.
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DeviceNet Serial Interface Module
RS-485 Mode
To operate in RS-485 mode, follow these steps.
1. Connect TRXD+ to pin 9.
2. Connect TRXD- to pin 1.
3. Connect common to pin 5.
The channel automatically operates in RS-485 mode by connecting these
pins.
Set Software Parameters
The 1799-DASCII module is configured by using the EDS parameters as defined in
the EDS Parameters table.
EDS Parameters
Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
Serial Port Parameters
Serial port
character
framing
1
Get/Set
Defines
number of
data bits, stop
bits, and
parity in data
character
frame.
0 = 7N2
1 = 7E1
2 = 7O1
3 = 8N1
4 = 8N2
5 = 8E1
6 = 8O1
7 = 7E2
8 = 7O2
8N1
3
USINT
Serial port
comm speed
2
Get/Set
Defines baud
rate of serial
port.
0 = 9600
1 = 1200
2 = 2400
3 = 4800
4 = 19.2 k
5 = 38.4 k
6 = 57.6 k
7 = 115.2 k
9600
baud
0
USINT
Serial port
handshaking
3
Get/Set
Enables
RTS/CTS
hardware
handshaking
on serial port.
0 = RTS/CTS disabled
1 = RTS/CTS enabled
Disabled
0
USINT
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Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
13
Serial Port Receive from ASCII Device
Max
number of
receive
characters
4
Get/Set
Max number of
characters the
module expects
to receive into
its ASCII port
from the serial
port.
1…250
20
characters
20
USINT
Receive
Record
Start mode
5
Get/Set
Determines
whether start
delimiter is
included with
the received
data.
0 = No start delimiter
1 = Exclude start
delimiter
2 = Include start
delimiter
No start
delimiter
0
USINT
Receive
start
delimiter
6
Get/Set
Character
identifies the
beginning of the
data string from
the ASCII device
when the length
is specified as 0.
Any valid standard
ASCII character
Colon
0x3A
USINT
(0…127 with 7-bit
data)
(0…255 with 8-bit
data)
Receive
Record End
mode
7
Get/Set
Selects whether
the End delimiter
is included with
the received
data.
0 = No end delimiter
1 = Exclude end
delimiter
2 = Include end
delimiter
Include
end
delimiter
2
USINT
Receive end
delimiter
8
Get/Set
Character
identifies the
end of the data
string from the
ASCII device
when the length
is specified as 0.
Any valid standard
ASCII character
(0…127 with 7-bit
data)
(0…255 with 8-bit
data
Carriage
return
0Dhex
USINT
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DeviceNet Serial Interface Module
Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
Receive
message
time-out
9
Get/Set
Number of ms to
wait for the next
character in the
string before
defining the
current message
complete and
marking it to
produce on the
DeviceNet
network.
0 = Not active
1…65,635 =
milliseconds to wait f
Not active
0
USINT
Receive
string data
type
10
Get/Set
Defines the
format of the
data string sent
to the master.
0 = Array
1 = Short string
2 = String
Short
string
1
USINT
Receive Pad
mode
11
Get/Set
Indicates
whether to pad
the invalid data
region after the
delimiter with
the pad
character, or to
use variable
length ASCII
responses.
0 = Pad mode
disabled
1 = Pad mode enabled
Enabled
1
USINT
Receive pad
character
12
Get/Set
The value to use
to pad the
invalid data
portion of the
poll response.
Any valid standard
ASCII character
Null
0
USINT
Receive
Swap mode
13
Get/Set
If enabled, the
position of the
bytes in the
serial messages
is swapped
every 2, 3, or 4
bytes.
0 = Disabled
1 = 16-bit Swap
Enabled
2 = 24-bit Swap
Enabled
3 = 32-bit Swap
Enabled
Disabled
0
USINT
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Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
DeviceNet
Handshake
mode
14
Get/Set
If enabled,
master must
acknowledge it
is ready for next
new data before
1799-DASCII
module sends
the new data.
0 = Master/Slave
Handshake
1 = Auto Increment
(No handshake)
Auto
Increment
1
USINT
Gateway
produce
assembly
size
15
Get
Total number of
I/O data bytes
that are sent to
the master from
the 1799-DASCII
module. This
should be the RX
size of your
scanner.
4…254
20 bytes of
array data
and 4
header
bytes
24
USINT
Receive
data string
16
Get
Serial data in the
receive buffer.
Any data string
Empty
Null
USINT
Receive
data size
17
Get
Number of
characters in the
Receive data
buffer.
0…250
0
0
USINT
Receive
record
number
18
Get/Set
The Receive
Record Number
sent from the
master.
0…255
0
0
USINT
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DeviceNet Serial Interface Module
Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
Serial Port Receive to ASCII Device
Max number
of transmit
characters
19
Get/Set
Max number of
characters the
1799-DASCII
module
expects to
transmit out its
serial port to
the serial
device.
0…250
20 chars
20
USINT
Transmit End
Delimiter
mode
20
Get/Set
Selects
whether the
End delimiter
is included
with the
received data.
0 = No end delimiter
1 = Exclude end
delimiter
2 = Include end
delimiter
Include
2
USINT
Transmit end
delimiter
character
21
Get/Set
Character that
identifies the
end of the
transmit data
string from
DeviceNet to
the ASCII
device when
the length is
specified as 0.
Any valid standard
ASCII
character
(0…127 with 7-bit
data)
(0…255 with 8-bit
data)
Carriage
return
0Dhex
USINT
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Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
17
Gateway Consume on DeviceNet Network from Master
Consume
string data
type
22
Get/Set
Defines the
format of the
data string
received from the
master.
0 = Array
1 = Short string
2 = String
Short
string
1
USINT
Transmit
Swap mode
23
Get/Set
If enabled, the
position of the
bytes in the serial
messages is
swapped every 2
or 4 bytes.
0 = Disabled
1 = 16-bit Swap
Enabled
2 = 24-bit Swap
Enabled
3 = 32-bit Swap
Enabled
Disabled
0
USINT
Gateway
consume
assembly
size
24
Get
Total number of
I/O data bytes
that are received
from the master.
This should be
the TX size of
your scanner.
4…254
20 bytes
of array
data and
4 header
bytes
24
USINT
Parameter
#
Access
Description
Parameter
Choices
Default
Value
Data
Type
Default
Setting
Serial Port Transmit/Explicit Messages from EDS Editor
Transmit
data string
25
Get/Set
Serial data to be
sent to the serial
transmit buffer.
ASCII block data
Empty
Transmit
data length
26
Get/Set
Length of the
Transmit Serial
Data.
0…250
0
USINT
0
USINT
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DeviceNet Serial Interface Module
Parameter
#
Access
Description
Parameter
Choices
Default
Setting
Default
Value
Data
Type
Transmit
record
number
27
Get/Set
The record
number of the
current transmit
data buffer.
0…255
0
0
USINT
Status
28
Get
The Combined
status byte for
the Serial Port
Object. The
Receive Record
object and the
Transmit Record
object.
No status
0
USINT
Autobaud
29
Get/Set
DeviceNet Baud
Rate
Enable
Autobaud
1
USINT
0 = fixed baud
rate
1 = Enable
Autobaud
Configuration Assembly
The 1799-DASCII module supports a configuration assembly as shown below. The
configuration assembly is accessed through the Assembly Object (Class 4) Instance
103. The configuration assembly data size is 22 bytes.
Byte
Parameter Definition
EDS Parameter
0
ASCII Serial Character Format
1
1
ASCII Serial Comm Speed
2
2
ASCII Hardware Handshake
3
3
ASCII Max Number of Receive Characters
4
4
ASCII Receive Record Start Mode
5
5
ASCII Receive Start Delimiter
6
6
ASCII Receive Record End Mode
7
7
ASCII Receive End Delimiter
8
8, 9
ASCII Receive Message Timeout
9
10
ASCII Receive String Data Type
10
11
ASCII Receive Pad Mode
11
12
ASCII Receive Pad Character
12
13
ASCII Receive Swap Mode
13
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Byte
Parameter Definition
EDS Parameter
14
DeviceNet Handshake Mode
14
15
ASCII Receive Record Number
18
16
ASCII Max Number of Transmit Characters
19
17
ASCII Transmit End Delimiter Mode
20
18
ASCII Transmit End Delimiter Character
21
19
ASCII Consume String Data Type
22
20
ASCII Transmit Swap Mode
23
21
Autobaud
29
19
Configuring the Parameters
The 1799 I/O modules have parameters that are configurable through a DeviceNet
configuration tool, such as RSNetWorx for DeviceNet software. The DeviceNet
configuration tools require an electronic data sheet (EDS) for the 1799 I/O modules
to configure the module’s parameters. Find the EDS files at
http://www.rockwellautomation.com/support/.
Set Up the Serial Link
Parameters 1, 2, and 3 let you define the serial link communication options.
See these parameters in the EDS Parameters table on page 12.
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DeviceNet Serial Interface Module
Parameter
#
Access
Description
Parameter Choices
Default
Setting
Default
Value
Data
Type
Serial Port Parameters
Serial port
character
framing
1
Get/Set
Defines number
of data bits,
stop bits, and
parity in data
character
frame.
0 = 7N2
1 = 7E1
2 = 7O1
3 = 8N1
4 = 8N2
5 = 8E1
6 = 8O1
7 = 7E2
8 = 7O2
8N1
3
USINT
Serial port
comm
speed
2
Get/Set
Defines baud
rate of serial
port.
0 = 9600
1 = 1200
2 = 2400
3 = 4800
4 = 19.2 k
5 = 38.4 k
6 = 57.6 k
7 = 115.2 k
9600
baud
0
USINT
Serial port
handshaking
3
Get/Set
Enables
RTS/CTS
hardware
handshaking on
serial port.
0 = RTS/CTS disabled
1 = RTS/CTS enabled
Disabled
0
USINT
Serial Character Framing (parameter 1)
This defines the number of data bits and stop bits used in each character's data
frame. It also defines the type of character frame parity used.
Serial Comm Speed (parameter 2)
This defines the baud rate options available on the serial port.
RTS/CTS Hardware Handshaking (parameter 3)
With an RS232 connection, the 1799-DASCII module supports hardware
handshaking for data exchange via RTS/CTS control lines on the DB9 connectors.
When used with an ASCII device that also supports hardware handshaking, the RTS
and CTS lines are used to meter data flow between the module and device and
prevent data buffer overflow. This option can be enabled and disabled via
software.
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Receive Serial Data from the ASCII Device
The 1799-DASCII module receives a number of characters at its serial port and
transmits these to the DeviceNet master (produces on the DeviceNet network) via
the following:
• Polled I/O
• Change-of-state (COS)
• Cyclic
• Explicit Message
The received character string is captured when one of the following occurs:
• The specific number of bytes defined (max number of Receive characters) is received.
• The defined End-of-String Terminator character is detected.
• The specified non-zero time-out value (Message Time-out) is reached.
When any of these events occur, the 1799-DASCII module stores the received
message string in its internal buffer and transmits (produces) it onto the DeviceNet
network at the next opportunity.
Set Up the Receive-character Buffer Length (parameter 4)
The receive character buffer length is the number of characters that the
1799-DASCII module can receive from the serial device into its buffer at one time.
The length of the data string sent to the DeviceNet master is less than or equal to
this size, plus a 4-byte header.
When the 1799-DASCII module receives the character that fills the buffer, it sets the
nondelimited RECORD status flag and forces the data in the receive buffer to be
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sent to the master. If the 1799-DASCII module receives a character while the buffer
is full, it internally generates an overflow error in the status byte.
The subsequent received characters are received into the buffer and handled as the
start of the next incoming message string.
ATTENTION
Incoming characters could be missed in the process of handling a string longer than the
defined max length.
This value can be set and retrieved by EDS parameter 4.
Set Up and Using Delimiter Operation (parameters 5, 6, 7, 8)
When receiving data strings from the serial device, the 1799-DASCII module can
take advantage of Start and Stop (End) delimiters. The Start Delimiter is the
start-of-string indicator and the End Delimiter is the end-of-string indicator. This lets
explicit control over which characters are sent to the master.
When Start Delimiter operation is selected, a character must be defined that
prompts the 1799-DASCII module to start storing the incoming data string. All
characters up to this Start Delimiter (after the previous message was completed) are
ignored. Once the Start Delimiter is received, all characters are stored until the End
Delimiter is received or the Max Receive Char Length is reached (or the RX
Time-out time is exceeded, if that option is selected). Once the End Delimiter is
reached, the data string is captured and prepared to send to the DeviceNet master.
If either delimiter is used, you can also elect whether to include those characters in
the string sent to the master. The Start Delimiter mode parameter is 5, the Delimiter
character is 6. The End Delimiter mode is parameter 7 and the End Delimiter
character is 8.
Rx Message Time-out (parameter 9)
The 1799-DASCII module has a receive time-out value configurable in 1 ms
increments. When this value is non-zero, the module's timeout counter resets on
the receipt of each new byte of data. If the timeout counter expires, the module
sets the nondelimited flag in the Status Byte and updates the Produce buffer with
the current data string.
Message Time-out Values
Value
Time-out Action
0
Disabled
1…65,535
Time-out time in milliseconds (ms)
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Produce Received-serial Data onto DeviceNet Network
Received-string Data Type (parameter 10)
The format of the data is Array, Short_String,
or String - sent to the DeviceNet master, as
shown below. Choose the one best suited for
your application and that modifies the format
of the data field.
The format of the data sent to the 1799-DASCII module is Array, Short_String, or
String. Choose the one best suited for your application and modifies the format of
the data field.
The Array data type has no length associated with it. It is equivalent to specifying a
length of zero by using a string or short_string data type.
The Short_String data type is the default data type of the device. This suffices for
most applications. The Short_String data type has only 1 byte of length, and the
rest of the data bytes are appended after the length.
The String data type has 2 bytes of length. The String data type is useful in talking
to programmable controllers or other devices that have a data file specifically made
to handle this data type. The length is Little Endian (low byte, high byte), and the
high order byte should be set to zero. The 1799-DASCII module only receives up
to 250 bytes of information, so the extra byte, although required for this data type,
is 0.
IMPORTANT
If the Short_String or String data type is used, the length is not sent to the
ASCII device.
Received-string Data DeviceNet Assembly Formats
The following tables define the format that the 1799-DASCII module produces on
DeviceNet network and sends to the DeviceNet master. In all cases, the size of the
assembly is equal to the length of the received ASCII string plus a 4-byte header.
Produce Data DeviceNet Format - Array String Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (250 bytes max)
Transaction ID
Status byte
Reserved
Reserved
ASCII data (including optional <terminator>.
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Produce Data DeviceNet Format - String_String Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (250 bytes max)
Transaction ID
Status byte
Reserved
Length
ASCII data (including optional <terminator>.
Produce Data DeviceNet Format - String String Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (250 bytes max)
Transaction ID
Status byte
Length (low byte)
Length (high byte)
ASCII data (including optional
<terminator>.
Set Up and Use Pad Mode (parameters 11 and 12)
Pad mode operation is the method used by
the 1799-DASCII module to add extra
characters to the end of its received data
string (after the delimiter character) from the
external I/O device before sending the string
to the DeviceNet scanner (master) as an I/O Response. The quantity added is such
that the data string returned to the scanner is a constant length, and that length is
the number specified in the Receive Character Length parameter, plus any header
options. The quantity of pad characters sent can vary from message to message,
depending on the size of the incoming string.
Pad Mode Selection (parameter 11)
Pad mode is included for compatibility with scanners that cannot receive variable
length I/O messages. For such scanners, you must turn on Pad mode (a value of 1).
Turning Pad mode on does not harm scanners that do support variable length
receive messages. The default value for Pad mode is off. If the scanner does
support variable I/O messaging lengths, the Pad mode option can be set to off (a
value of 0) to conserve some network bandwidth.
The selection of Pad mode is valid only for the DeviceNet message that the
1799-DASCII produces. It has no effect on DeviceNet messages sent from the
scanner to the 1799-DASCII module. This value can be set and retrieved by using
the standard set and get services on Use parameter 11 of Table 4.
Pad Mode Character (parameter 12)
You can specify the character that Pad mode uses to pad the received serial data.
This can be set to any valid I/O value (0…127 in 7-bit modes, 0…255 in 8-bit
modes). This value can be set and retrieved by using the standard set/get services
on parameter 12. See the EDS Parameters table starting on page 12.
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Set Up and Use the Swap Bytes Mode (parameter 13)
This option may be helpful if the 1799-DASCII module is connected to a DeviceNet
scanner that organizes the data string characters into data type elements that are
larger than 1 byte each. An example is the Allen-Bradley SLC 500 module. In such
cases, the bytes of the data in the master's memory organization can be reversed
from the order in which they are sent or received on the DeviceNet network and
the serial link to the ASCII device. This may cause anomalies in some cases.
The message received or desired "ABCDEFGH" string may appear in memory as
"BADCFEHG" for 2-byte word organization, and "DCBAHGFE" for 4-byte word
organization.
Transmit Byte Swapping
By setting parameter 23, the bytes from the master are swapped by the
1799-DASCII module before transmitting the string to the ASCII device.
Rules for Usage
The rules for usage are the following:
• This feature is set for transmit and receive independently.
• Byte swapping works better if the string length is an even multiple of the byte-swap size.
• If a delimiter is received, then all characters up to and including the defined delimiter are sent to the
DeviceNet master.
If Pad mode = 1, then the 1799-DASCII module fills the Poll Response data
with the Pad Char up to the defined size.
If Pad mode = 0, then the 1799-DASCII module sends only the data up to
and including the delimiter.
• If no delimiter is received, then the 1799-DASCII module receives up to
Max_Number_of_Receive_Chars, and sends this string to the DeviceNet network with an overflow
error.
It continues to receive and send strings of size
Max_Number_of_Receive_Chars, along with the overflow error, until a
delimiter is received. This could continue indefinitely if the I/O device does
not transmit the specified delimiter.
Master-Slave Handshake versus Immediate Mode (parameter 14)
If DeviceNet Master-Slave Handshake mode is selected, the DeviceNet master can
inhibit the 1799-DASCII module from sending new ASCII data until the master is
ready to receive and process the new data.
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In this mode the two required for the complete transaction are the following:
• A "New Data Available" flag is set by the 1799-DASCII module in the status byte. This informs the
master that the 1799-DASCII module has received a new data string and is waiting for the OK to send
it.
• The first byte of the message the master sends to the 1799-DASCII module is the RX ID Record. By
setting the value of this byte to the value of the new record number pending, it indicates to the
1799-DASCII module that the master is ready to receive the new data.
The master monitors this new data flag and when the master is ready to receive
new serial data, it sets a new number in the new record number byte of the next
poll command message. This applies only to data being sent from the 1799-DASCII
module to the master.
The operation proceeds as follows.
1. The 1799-DASCII module receives a new data string.
2. The 1799-DASCII module sets the New Data flag in the Status byte of its next
produce message.
3. The master sends out messages to the 1799-DASCII module in the normal
fashion. If the master is not ready to receive new data, the New Record Data
byte remains set.
4. When the master is ready to receive the new data string, it changes the New
Record Data byte to any value different than what it had been sending.
5. The 1799-DASCII module sends the new data upon receipt of a record from
the master in which the New Record Data byte has been changed.
6. If the 1799-DASCII module receives an updated New Record Data byte and
has no new data, it sets the Handshake Error bit in its Produce Status byte.
In Immediate mode, this handshaking is not active and the 1799-DASCII module
sends new data as soon as it is received from the ASCII device with the new
Transaction ID. It is the master's responsibility to be ready to accept and process
the new data string when it is presented.
Identify the Scanner I/O Receive Size (parameter 15)
The 1799-DASCII module automatically calculates the number of bytes it sends the
DeviceNet master. Its value is determined by a combination of the incoming data
and the options you selected. Parameter 15 is a read-only value that defines the size
of the DeviceNet message to be sent by the 1799-DASCII module to the master.
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IMPORTANT
27
If you are using a scanner that must receive a constant message length, set its
Rx (receive) value to this number of bytes.
Explicit Messages to Receive the Serial Data String (parameters 16, 17, 18)
Parameters 16, 17, and 18 contain the status of the most-recent incoming serial data
string. You can use the data to read the device's ASCII data via the Explicit
Messaging technique.
Parameter 16 holds the most recent received data.
Parameter 17 defines the size, in bytes, of the DeviceNet message to be sent by the
1799-DASCII module to the master.
Parameter 18 holds the record number of the data string in parameter 16 if the
Header option is selected.
Serial Status Byte Description and Transmission
The Serial Status byte is an OR'd bitfield of a number of status and exceptions flags.
Serial Status Byte
Bit
Exception
Description
0
Tx I/O
overflow
The transmit queue has overflowed resulting in a loss of data. The transmit I/O is full
of data waiting to be transmitted. Some of the data added has been lost. When
space becomes available in the TX I/O, this bit resets.
1
Rx I/O
overflow
The receive queue has overflowed resulting in a loss of data. The receive I/O is full
of data waiting to be processed. A new character arrives before the buffer is
emptied, thus setting the overflow bit. The data character is lost. When space
becomes available in the RX I/O, this bit resets.
2
Rx parity error
The message has a parity error. One or more of the characters has a parity error.
3
Rx overrun
error
A byte that has not been read has been overwritten by another received byte,
resulting in data loss.
4
Rx framing
error
When the stop bit of a received character is a logic zero, a framing error occurs.
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Serial Status Byte
Bit
Exception
Description
5
Nondelimited
string
The current message has filled the buffer without a termination character, and is
being transmitted in total. This is not an error. It is caused by characters filling, but
not overflowing the receive buffer. This causes the 1799-DASCII module to transmit
the characters to the master.
6
Handshake
error
This error occurs in Master-Slave Handshake mode. It indicates that the master has
requested a new data record from the 1799-DASCII module, but the 1799-DASCII
module has not indicated new data is available to be sent.
7
New data flag
This bit is used only when the Master-Slave Handshake option is active. When the
1799-DASCII module receives a new data string into its serial port, it sets this flag in
its DeviceNet response message. The bit remains set for 1 produce message after
the master requests the new data. It resets.
Concerning transmitting serial data to an ASCII device, the 1799-DASCII module
transmits character strings to the serial device that it has received from the
DeviceNet master via the following:
• Poll I/O
• Explicit Message
The character string is transmitted when either of the following conditions occurs in
the data within the DeviceNet message data field:
• The specific number of bytes defined (Transmit Character Buffer Length) is received.
• The defined End-of-String Terminator character is detected.
When either of these events occurs, the 1799-DASCII module stores the DeviceNet
string data into its internal buffer and transmits it out its serial port.
To transmit data to the serial device, the data must first be sent to the 1799-DASCII
module and then the 1799-DASCII module must send the data to the serial device.
The set-up for transmitting from the master to the 1799-DASCII module are
discussed first.
Consume Data Assembly Formats from DeviceNet Master
The assembly format options of the data to be sent from the DeviceNet master to
the 1799-DASCII module are shown below. The one selected depends on the
application. Refer to Transmit String Data Type Formats (parameter 22).
Consume Data DeviceNet Format - Array Data Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (128 bytes max)
Rx ID Byte (Handshake
mode only)
Transaction ID
Byte
Reserved
Reserved
ASCII data (including optional
<terminator>.
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Consume Data DeviceNet Format - Short_String Data Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (128 bytes max)
Rx ID Byte (Handshake
mode only)
Transaction ID
Byte
Reserved
Length
ASCII data (including optional
<terminator>.
Consume Data DeviceNet Assembly Format - String Data Type
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5-X (max 128 bytes)
Rx ID Byte (Handshake
mode only)
Transaction ID
Byte
Length (low byte)
Length (high byte)
ASCII data (including optional
<terminator>.
Transmit String Data Type Formats (parameter 22)
This is the format of the data sent from the 1799-DASCII module - array,
short_string, or string - to the DeviceNet master. These are shown in the following
sections. Which one you pick depends on the application and modifies the format
of the data field. To change the string format, use parameter 22.
Set Up and Use the TX Byte Swap Mode (parameter 23)
This option is helpful if the 1799-DASCII module is connected to a DeviceNet
scanner that organizes the data string characters into data type elements that are
larger than 1 byte each. An example is an Allen-Bradley PLC, such as the SLC 500
controller. In such cases, the bytes of the data in the master's memory organization
can be reversed from the order in which they are sent or received on the DeviceNet
network and the serial link to the ASCII device. This may cause anomalies in some
cases.
Identify Scanner I/O Transmit Size (parameter 24)
The 1799-DASCII module automatically calculates the number of bytes it expects
from the DeviceNet master. Its value is determined by a combination of the
incoming data and the options selected. Parameter 24 is a read-only value that
defines the size of the DeviceNet message sent to the 1799-DASCII module from the
master.
IMPORTANT
Set the scanner’s produce size value to this number of bytes.
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Transmit Serial Data to the ASCII Device
Read this section for information about transmitting serial data to the ASCII device.
Set Up the Transmit-character Buffer Length (parameter 19)
The Transmit-character buffer length is the number of characters that the
1799-DASCII module can receive in its transmit buffer from the DeviceNet system.
This size contributes to the I/O's Consume Size. This size can be found in the
Parameter object.
Set Up and Use the Transmit Delimiter (parameters 20 and 21)
The transmit delimiter is an end-of-string character that is used by the 1799-DASCII
module to determine how many bytes to transmit over the serial link to the
1799-DASCII device. This transmit delimiter is used if the Transmit Buffer Length
equals 0. If the buffer length is not 0, the 1799-DASCII module ignores the transmit
delimiter.
The 1799-DASCII module transmits up to and including the delimiter when the
above condition is met. The transmit delimiter can be set to any valid I/O character
that can be received over the link (parameter 21). Be careful not to set the
delimiter to a value outside of the valid range for the number of data bits. (Note
that a data bit size setting of 7 lets a delimiter range of 0…127 dec., 00…7Fhex). If
the delimiter is not valid, or the delimiter is never received, the device updates the
output buffer on detection of a buffer filled condition. These values can be set and
retrieved by using the standard set/get services in the Transmit Record Class 0x71.
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Transmitting Serial Data
The length of the string set determines the use of a delimiter in transmitting data to
a serial device from the 1799-DASCII module.
If the string length is zero, or the data type is type Array, the following happens:
• The 1799-DASCII module receives data sent from the DeviceNet master and uses the End Delimiter to
determine how much data is sent to the serial device. The 1799-DASCII module computes the length
and stores this as the new length in the string attribute. (This does not appear if the data type is array.
You see the string truncated and the length is in the background.)
• If a delimiter is contained within the string, all characters in the data field up to and including the
defined delimiter are stored.
• If no delimiter is contained within the string, the 1799-DASCII module stores the data in the data field
received.
If the string length > 0 or the data type is String or Short_String, the following
happens:
• The 1799-DASCII receives data sent from the DeviceNet master, ignoring any embedded terminator. It
stores the number of characters defined in Max_Number_of_Transmit_Chars, or the total sent by the
master, whichever is less.
Now, the 1799-DASCII sends the data immediately if attribute X is set to 1. You can
cause this data to be transmitted by incrementing the record counter.
The following identifies which parameters transmit serial data to the ASCII device:
• Explicit Messages to Transmit Serial Data String
• Parameters 26, 27, and 28 can be used to set up the serial data string and send it to the ASCII device
via the Explicit Messaging technique
• Parameter 26 holds the data to be sent
• Parameter 27 defines the size, in bytes, of the DeviceNet message to be sent from the 1799-DASCII
module to the device
• Parameter 28 holds the record number of the data string in parameter 24 if the Header option is
selected. Changing the record causes the data in parameter 24 to be transmitted immediately from the
master to the 1799-DASCII module
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Status Indicators
The 1799-DASCII module has two indicators that provide visual status information
about the module and the DeviceNet network. Refer to the Module Status and
Network Status tables to interpret the status indications.
Module Status Indicator (labeled MS)
Indicator
Module Status
Description
Off
No power
There is no power through the DeviceNet network.
Solid green
Device operational
1799-DASCII module is operating normally.
Flashing green
Device in standby
1799-DASCII module needs commissioning (for
example, attempting autobaud).
Flashing red
Minor fault
Recoverable fault.
Solid red
Unrecoverable fault
Replace 1799-DASCII module.
Flashing red/green
Device self-testing
1799-DASCII is in self-test mode.
Network Status Indicator (labeled NS)
Indicator
Network Status
Description
Off
No power or not online
1799-DASCII module has no power, has not completed the
Dup_MAC_ID test, or needs commissioning.
Solid green
Online, connected
1799-DASCII module operating correctly.
Flashing green
Online, not connected
1799-DASCII module is online but is not allocated to a master.
Flashing red
Connection time-out
One or more I/O connections are timed out.
Solid red
Critical link failure
1799-DASCII module detected an error that makes it
incapable of communicating on the link (bus off or duplicate
MAC ID).
Serial Port Indicator (labeled TX and RX)
Indicator
Serial Port Status
Description
Off
No data communication active
1799-DASCII module has no active data communication on
the data line.
On
Data communication active
1799-DASCII module has active data communication on
the data line.
The 1799-DASCII module has two RS-232 activity indicators: one for transmit (TX)
and one for receive (RX). Each of these indicators illuminates when data
communication is active on the respective data lines.
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Specifications
DeviceNet Serial Interface Module- 1799-DASCII
Attribute
Value
Description
Communication gateway between a serial-capable device over an RS-232 or RS-485
interface and a DeviceNet network
Device type
Rockwell Miscellaneous, 115, 0x73 hex
Product code
220, 0xDChex
Vendor ID
Allen-Bradley/Rockwell Automation
Device profile
Identity Object 0x01
Message Router Object 0x02
DeviceNet Object 0x03
Assembly Object 0x04
Connection Object 0x05
Parameter Object 0x0F
Acknowledge Handler 0x2B
Serial I/O Object 112, 0x70 (vendor-specific)
Transmit Serial Object 113, 0x71 (vendor-specific)
Receive Serial Object 114, 0x72 (vendor-specific)
Product revision
1.01
DeviceNet
Baud rate: autobaud operation and software selection
Address selection: address number 0…63 with rotary switches
DeviceNet connection: 5-pin open connector
Serial port
RS-232 and RS-485
Baud rate: 1200, 2400, 4800, 9600, 19.2 k, 38.4 k, 57.6 k, 115.2 k
Parity: odd/even/none
Connector: - pin D-shell, 9-pin male D-shell
Indicators
DeviceNet network:
Module status - red/green
Network status - red/green
Serial port:
Transmit active - green
Receive active - green
Isolation voltage
50V (continuous), Basic Insulation Type
Type tested at 1500V DC for 60 s, DeviceNet network to Serial, and Logic to
Communication ports
Power
1.8 W: 75 mA @ 24V DC max
Enclosure type rating
None (open-style)
Weight, approx.
34.6 g (1.22 oz)
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Environmental Specifications
Attribute
Value
Temperature, operating
IEC 60068-2-1 (Test Ad, Operating Cold),
IEC 60068-2-2 (Test Bd, Operating Dry Heat),
IEC 60068-2-14 (Test Nb, Operating Thermal Shock):
-20…70 °C (-4…158 °F)
Temperature, nonoperating
IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold),
IEC 60068-2-2 (Test Bb, U npackaged Nonoperating Dry Heat),
IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock):
-40…85 °C (-40…185 °F)
Relative humidity
IEC 60068-2-30 (Test Db, Unpackaged Nonoperating Damp Heat):
5…95% noncondensing
Shock, operating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
30 g peak acceleration
Shock, nonoperating
IEC 60068-2-27 (Test Ea, Unpackaged Shock)
50 g peak acceleration
Vibration
IEC 60068-2-6 (Test Fc, Operating)
5 g @ 10…500 Hz
ESD immunity
IEC 61000-4-2:
8 kV indirect contact discharges
Radiated RF immunity
IEC 61000-4-3:
10V/m with 1 kHz sine-wave 80%AM from 30…2000 MHz
10V/m with 200 Hz 50% Pulse 100%AM at 900 MHz
10V/m with 200 Hz 50% Pulse 100%AM at 1890 MHz
3V/m with 1 kHz sine-wave 80%AM from 2000…2700 MHz
EFT/B immunity
IEC 61000-4-4:
+2 kV at 5 kHz on communication ports
Surge transient immunity
IEC 61000-4-5:
+2 kV line-earth (CM) on shielded ports
Conducted RF immunity
IEC 61000-4-6:
10V rms with 1 kHz sine-wave 80% AM from 150 kHz…80 MHz
Emissions
CISPR 11
Group 1, Class A
Wire Size
0.25...2.5 mm2 (22...14 AWG) solid or stranded shielded copper wire
rated at 80 °C (176 °F) or higher. Refer to DeviceNet Media Design And
Installation Guide, publication DNET-UM072.
Wiring category(1)
2 - on communication ports
(1)
Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
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Certifications
Certification(1)
Value
c-UL-us
UL Recognized Component Industrial Control Equipment, certified for US and Canada.
See UL File E65584.
CE
European Union 2004/108/EC EMC Directive, compliant with:
EN 61326-1; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
C-Tick
Australian Radiocommunications Act compliant with AS/NZS
CISPR 11, Industrial Emissions
ODVA
ODVA conformance tested to DeviceNet specifications
(1)
See the Product Certification link at http:// www.ab.com for Declaration of Conformity, Certificates, and other certification
details.
Publication 1799-IN012B-EN-P - July 2008
Rockwell Automation Support
Rockwell Automation provides technical information on the Web to assist you in
using its products. At http://support.rockwellautomation.com, you can find
technical manuals, a knowledge base of FAQs, technical and application notes,
sample code and links to software service packs, and a MySupport feature that you
can customize to make the best use of these tools.
For an additional level of technical phone support for installation, configuration and
troubleshooting, we offer TechConnect support programs. For more information,
contact your local distributor or Rockwell Automation representative, or visit
http://support.rockwellautomation.com.
Installation Assistance
If you experience a problem within the first 24 hours of installation, please review
the information that's contained in this manual. You can also contact a special
Customer Support number for initial help in getting your product up and running.
United States
1.440.646.3434
Monday – Friday, 8 a.m. – 5 p.m. EST
Outside United
States
Please contact your local Rockwell Automation representative for any
technical support issues.
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully
operational when shipped from the manufacturing facility. However, if your
product is not functioning and needs to be returned, follow these procedures.
United States
Contact your distributor. You must provide a Customer Support case number
(see phone number above to obtain one) to your distributor in order to
complete the return process.
Outside United
States
Please contact your local Rockwell Automation representative for the return
procedure.
Allen-Bradley, Rockwell Automation, RSNetWorx for DeviceNet, SLC 500, and TechConnect are trademarks of Rockwell
Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Publication 1799-IN012B-EN-P - July 2008
Supersedes Publication 1799-IN012A-EN-P - November 2007
PN-29563
Copyright © 2008 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
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