WRC 1782-JDO User manual

1782-JDO
DeviceNet-to-Optomux Gateway
User’s Manual
Western Reserve Controls, Inc.

Western Reserve Controls, Inc. 1782-JDO User’s Manual
Although every effort has been made to insure the accuracy of this document, all information is
subject to change without notice. Western Reserve Controls, Inc. assumes no liability for any
errors or omissions in this document or for direct, indirect, incidental or consequential damage
resulting from the use of this document.
Rev 1.02
May 2004
Copyright © 2003-2004 WRC
Western Reserve Controls, Inc.
1485 Exeter Road
Akron OH 44306
330-733-6662 (Phone)
330-733-6663 (FAX)
[email protected] (Email)
http://www.wrcakron.com (Web)
WRC is a trademark of Western Reserve Controls, Inc.
DeviceNet is a trademark of the Open DeviceNet Vendor Association (“ODVA”).
Optomux is a trademark of Opto22.
All other trademarks are property of their respective companies.

Western Reserve Controls, Inc. 1782-JDO User’s Manual
TABLE OF CONTENTS
1OVERVIEW 4
1.1 FEATURES.............................................................................................................................................................................5
1.1 OPTOMUX COMMAND SUMMARY...........................................................................................................................................6
1.2 BASIC OPERATION.....................................................................................................................................................................6
1.2 DEFAULT DEVICE CONFIGURATION.................................................................................................................................7
1.3 PRODUCT VERSION AND EDS............................................................................................................................................7
2QUICK START 8
2.1 HOW TO INSTALL A SERIAL NETWORK............................................................................................................................8
2.2 HOW TO READ DISCRETE INPUT DATA FROM THE JDO................................................................................................8
2.3 HOW TO WRITE SERIAL OUTPUT DATA TO THE JDO..................................................................................................10
2.4 HOW TO CHANGETHE NODEADDRESS.........................................................................................................................11
2.5 HOW TO CHANGETHE BAUD RATE................................................................................................................................11
3GENERAL SPECIFICATIONS 12
4HARDWARE INSTALLATION AND SET-UP 14
4.1 OVERVIEW.........................................................................................................................................................................14
4.2 LED OPERATION..............................................................................................................................................................14
4.2.1 DeviceNet LED’s..............................................................................................................................................................14
4.2.2 Serial Port LED’s.............................................................................................................................................................15
4.3 SERIAL PORT CONNECTOR..............................................................................................................................................16
4.4 DEVICENET CONFIGURATION.........................................................................................................................................16
4.4.1 DeviceNet Network Termination....................................................................................................................................16
4.4.2 DeviceNet Connection Wiring........................................................................................................................................16
4.4.3 RS485 Network Termination (1782-JDO-2)................................................................................................................17
5SOFTWARE CONFIGURATION AND SET-UP 18
5.1 SETTING UP SERIAL COMMUNICATIONS........................................................................................................................20
5.1.1 Reading the Data Frame Format...................................................................................................................................20
5.1.2 Setting up the serial link baud rate................................................................................................................................20
5.2 SETTING UP DEVICENET COMMUNICATIONS................................................................................................................20
5.2.1 Polled I/O...........................................................................................................................................................................20
5.2.2 Reading the I/O Poll Response Data Size....................................................................................................................20
5.2.3 Reading the I/O Poll Data Size......................................................................................................................................21
5.2.4 Setting up the DeviceNet Baudrate................................................................................................................................21
5.2.5 Autobaud Operation.........................................................................................................................................................21
5.2.6 Setting up the Connection Timer (EPR) .......................................................................................................................21
6DEVICENET PROFILE, OBJECTS AND SERVICES 22
6.1 1782-JDO DEVICENET PROFILE....................................................................................................................................22
6.2 IDENTITY OBJECT , CLASS 1.............................................................................................................................................22
6.3 PARAMETER OBJECT , CLASS FHEX (15DEC)...................................................................................................................24
6.4 COMMON DEVICENET SERVICES....................................................................................................................................25
7ACCESSORIES AND OTHER WRC PRODUCTS 26

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LIST OF TABLES
Table 1-1 I/O Message Types..................................................................................................6
Table 2-1 JDO Input Data Format (10 B1’s)..............................................................................9
Table 2-2 Input Status/Error Byte...........................................................................................10
Table 2-3..............................................................................................................................10
Table 2-4 DeviceNet Consume Assembly / Transmit Data Format ...........................................11
Table 2-5 Baud Rate Selection ..............................................................................................11
Table 4-1 Module Status LED (labeled MS)............................................................................15
Table 4-2 Network Status LED (labeled NS)...........................................................................15
Table 4-3 RS-232 / RS-485 Connector Signals.......................................................................16
Table 4-4 Maximum Network Cable Lengths...........................................................................16
Table 5-1 Configuration Parameter List..................................................................................18
Table 5-2 Serial Baud Rates..................................................................................................20
Table 6-1 DeviceNet Objects.................................................................................................22
Table 6-2 Identity Object Class Attributes (Instance 0) ............................................................22
Table 6-3 Identity Object Instance Attributes (Instance 1)........................................................23
Table 6-4 Identity Object Common Services ...........................................................................23
Table 6-5 Parameter Class Attributes (Instance 0)..................................................................24
Table 6-6 Parameter Instance Attributes (Instances 1-7) .........................................................24
Table 6-7 Parameter Common Services .................................................................................24
Table 6-8 JDO Parameter Instances (Class Fhex)....................................................................24
Table 7-1 WRC Replacements, Spare Parts and Other Products.............................................26
TABLE OF FIGURES
Figure 1-1 1782-JDO ..............................................................................................................5
Figure 4-1 1782-JDO Outline Drawing....................................................................................14
Figure 4-2 DeviceNet cable connector....................................................................................17

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1Overview
WRC’s 1782-JDO is a DeviceNet-to-RS485 serial link communications gateway and protocol
converter that provides a DeviceNet interface to Optomux B1 Brainboards. The JDO allows
the user to easily and conveniently connect and integrate existing B1 devices and their
associated I/O into a DeviceNet system.
Using the 1782-JDO you may communicate with the connected B1's in the same fashion as
the other DeviceNet products in the system. Data may be read/written using either I/O polling
or explicit messaging. Typically real-time data is read and written as I/O by the DeviceNet
Master via Polled I/O and parameters are read and written with the Explicit Messaging
technique.
The JDO gateway has several pre-defined Optomux commands built that it uses to
communicate with the B1 boards. As a user you do not need to know any details about the
Optomux protocol –you simply read and write discrete I/O data in your DeviceNet Master’s
I/O tables. To get started you need to fill in the appropriate configuration Parameters in the
JDO Parameter list to define your B1 Brainboard system and some general set-up attributes
and then place the JDO in your DeviceNet Master’s scan table. The JDO builds its owns
internal B1 scan list and starts communicating with the B1 boards. The JDO then translates
discrete I/O data between the DeviceNet polled I/O data and the Optomux B1 protocol
format.
You can connect up to 10 B1 brainboards to the JDO. The DeviceNet Master reads 3 bytes of
data from the JDO (1 status and 2 input data bytes) and writes 2 bytes of discrete output data
to the JDO for each brainboard.
The 1782-JDO is defined as a Communications Adapter device on the DeviceNet system. It
has a 3-pin plug connector for connection to a RS485/422 converter that then connects to the
to and from host connections of the port on a B1 and a 5-pin pluggable DeviceNet connector
for connections to the DeviceNet network. The serial port is configurable to run up to 38.4
kbaud. The device does auto baud rate selection when it is powered up on the DeviceNet
network. The 1782-JDO has one assigned DeviceNet address, which is set by a 6-position
DIPswitch on the unit. Other JDO parameters are software-configurable and are changed
from their default values by third-party DeviceNet configuration tools. Each 1782-JDO has 2
standard green/red DeviceNet LED’s for module status and network status and two green
LED’s to indicate RS485 transmit and receive activity. The RS485 link may be connected in a
point-to-point fashion to a single device, or to multiple devices in the standard RS485
convention.
This manual applies to 1782-JDO software versions 1.08 and later.

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Figure 1-11782-JDO
1.1 Features
The 1782-JDO has the following features:
•Translates messages and data between DeviceNet and up to 10 Opto22 B1 devices
•ODVA Conformance tested to DeviceNet Spec 2.0
•Defined as a DeviceNet Communications Device Profile 12 (Chex)
•Autobaud operation
•Polled I/O and Explicit Messaging
•Software Configurable Parameters for serial port operation
•Software Configurable Parameters to define the B1 system
•DeviceNet address selection via DIP switches
•DIN rail mount
•Pluggable 5-pin DeviceNet connection
•Pluggable RS-485 3-pin connection
•2 standard DeviceNet module and network status LED’s
•Serial transmit and receive green LEDs
•Powered from DeviceNet 11-25 Vdc network power
•Serial port baud rate up to 38.4k baud

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1.1 Optomux Command Summary
The JDO supports the following B1 commands:
•Power-up Clear (command A)
•Reset (command B)
•Enhanced Digital Watchdog (command m)
•Configure Positions (command G)
•Read Module Configuration (command j)
•Write Outputs (command J)
•Read Status (command M)
1.2 Basic Operation
The JDO operates as the DeviceNet front-end to the Optomux B1 brainboards. The
DeviceNet Master can receive and send data to and from the 1782-JDO via the methods
described in this section. It formats and sends the data to the B1s and accepts responses
from the B1, which are reformatted and passed back to the DeviceNet system as required. In
short, the JDO behaves like an Optomux scanner that is connected to DeviceNet.
The JDO has one DeviceNet address. All DeviceNet messages to the JDO are sent to this
address. All DeviceNet messages to and from the B1’s are sent to the JDO DeviceNet
assembly objects using poll commands.
The JDO Parameter Object allows you to define the specific operation of each JDO and the
attached B1’s. These parameters include all the set-up required for the serial comm. link.
The following chart defines the various messaging methods used for data types at your serial
device and a brief explanation follows.
Table 1-1I/O Message Types
Typical Data Polled Cyclic Bit-Strobe Change-of-State Explicit Message
Commands √√
Status √√
Parameters √√
The general sequence of events and operation is explained below:
1. Configure the JDO for the number of brainboards (type B1) to be connected and the
input/output definition of each.
2. Each B1 has 9 associated parameters, including it Optomux address, input/output

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configuration, watchdog operation, etc. Set these parameters for each one.
3. Set up the rest of the parameters, as appropriate.
4. Note: Once the JDO is configured, it must be reset to complete the set up and
configuration of the B1’s.
5. Determine the DeviceNet I/O command and response data sizes –3 bytes input and 2
bytes output data for each B1 –by reading the JDO Produce and Consume Sizes in
read-only Parameters 5 and 6.
6. Enter the JDO DeviceNet I/O sizes into your Master scanner and map its I/O into the
scanner’s I/O data table.
7. Once the DeviceNet scanner starts scanning the network, the JDO will start a sequence
of continuous reads and writes of each connected B1 to receive and transmit its output
and input data.
8. The JDO will continuously update its DeviceNet produce buffer asyncronously with B1
input data and provide updated information to the DeviceNet scanner via the Polled I/O
Response technique.
•The input data will be placed in the input field in the order as the B1’s are listed in the
Parameter list of the JDO.
9. Once the control system is put in run mode, the JDO will take the output data received
from the DeviceNet Master in the Poll Command and sent the output data to each B1.
•The output data will be read from the output field (consume data) in the order as the
B1’s are listed in the Parameter list of the JDO.
1.2 Default Device Configuration
The 1782-JDO DeviceNet address is read from the switches and is set to 63 and the baud
rate is set to Autobaud at the factory. All other parameters are software settable. The default
settings for the 1782-JDO are provided in the discussion of the Parameter Object and Table
5-1.
1.3 Product version and EDS
This manual applies to 1782-JDO versions 1.08 and higher. An EDS (Electronic Data Sheet)
for the 1782-JDO, is shipped with your device or is available on WRC’s web site:
http://www.wrcakron.com/.

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2Quick Start
To quickly install your 1782-JDO in your DeviceNet system, follow the
instructions below. For more details, see Section 4.
1. Connect your DeviceNet network cable to a 5-pin female (Phoenix-type) plug according
to DeviceNet cable wiring specifications
2. Make sure that the DeviceNet network is terminated properly.
3. The JDO Node Address (MacID) is set to 63 at the factory. Make sure no other device on
the network is set to 63, or change the JDO address to one that is not currently used (see
Section 2.4 below).
4. The JDO baud rate is set to Autobaud operation at the factory. See Section 2.5 below to
change it to a fixed baud rate if desired.
5. Make sure that there is power on the DeviceNet network and plug the cable into the
1782-JDO.
6. The 1782-JDO will undergo its initialization sequence, flashing both LED’s red and green.
After approximately 5 seconds, the Module Status LED (labeled “MS”) will flash green.
The Network Status LED (labeled “NS”) will remain off. This condition occurs while the
JDO is attempting to synchronize to the network baudrate (autobaud).
7. The Module Status LED (“MS”) will go on solid after the Device successfully determines
the network baudrate. This requires devices on the network attempting to communicate
with each other. The Network Status LED (labeled “NS”) will begin to flash green. If it
turns solid red, check for a duplicate MacID on the network. If it remains off, make sure
that there are other devices trying to communicate on the network.
8. Once the Master recognizes the unit on the link and allocates the connection (initiates
communications), The Network Status LED will be solid green. The device is now being
actively scanned.
9. The 1782-JDO is now operating on the network.
2.1 How to Install a Serial Network
1. The communication between your serial device(s) and the 1782-JDO is an RS-485 2-wire
differential network. The B1’s are 4-wire RS-422 devices.
2. Connect one end of the cable to the JDO using the 3-point terminal plug provided. Note
the terminal markings on the JDO case.
3. Connect the JDO SIG+ signal wire to the TH+ and FH+ terminals on the first B1.
4. Connect the JDO SIG-signal wire to the TH-and FH-terminals on the first B1.
5. Turn on power to the serial device and the JDO.
Note: Opto22 and WRC recommend an external converter to make the interconnection
between the JDO and a Brainboard a RS-422 connection.
2.2 How to Read Discrete Input Data from the JDO
1. Set up the receive size of your connection to equal the (Max Number of B1 Devices * 3
(+1 if the Max Number is odd)) (set in Parameter 4) in your Master’s scan table. This

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value is calculated by the JDO using the number of B1 devices you define in Parameter 4
and can be read from Parameter 5 in the Parameter Object and the EDS file. The default
value should be 4.
2. Map the data from your IO response to your scanners memory map.
i. The first byte indicates the status byte from the B1.
ii. The second byte contains the DI’s for channels 0-7.
iii. The third byte contains the DI’s for channels 8-15.
3. Direct the master to begin polling the JDO. The JDO will continuously issue Read Status
commands to the B1 and update the DeviceNet Poll Response (input data) with the input
data from the B1.
Table 2-1JDO Input Data Format (10 B1’s)
BYTE B1 # MEANING
Byte 0 1st data byte, DI’s 0-7
Byte 1 1st data byte, DI’s 8-15
Byte 2 2nd data byte, DI’s 0-7
Byte 3 2nd data byte, DI’s 8-15
Byte 4 3rd data byte, DI’s 0-7
Byte 5 3rd data byte, DI’s 8-15
….
Byte 18 10th data byte, DI’s 0-7
Byte 19 10th data byte, DI’s 8-15
Byte 20 1st status byte
Byte 21 2nd status byte
Byte 25 3rd status byte
….
Byte 29 10th status byte

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The status/error byte represents the status of the communication command from the JDO to
the B1. This byte is defined as follows:
Table 2-2Input Status/Error Byte
Table 2-3
Byte Value
(decimal) Byte Value (hex) Meaning
00No Error
11Power-up Clear Command Expected*
22Undefined Command*
33TX Checksum Error to B1
44Input Buffer Overrun*
55Non-printable ASCII Character Received*
66Data Field Error*
77Communications Link Watchdog Time-out Error
88Specified Limits Invalid
10 ARX Checksum Error from B1
15 FOptomux unit did not respond
* These are defined Optomux errors (Optomux error # + 1) that should never be seen with a
properly operating JDO.
4. Set up the JDO in your DeviceNet Master’s scan list.
5. Map your DeviceNet I/O between the JDO and the Master’s I/O image table or other
suitable file. (The JDO defaults to one B1 unit, so the JDO will send 3 bytes of data and
receive 2 from the Master.)
2.3 How to Write Serial Output Data to the JDO
1. Set up the receive size of your connection to equal the (Max Number of B1 Devices * 2)
in your Master’s scan table. This value is calculated by the JDO using the number of B1
devices you define in Parameter 4 and can be read from Parameter 6 in the Parameter
Object and the EDS file. The default value should be 2.
2. Map the data for your IO command to your scanners memory map.
i. The second byte contains the DI’s for channels 0-7.
ii. The third byte contains the DI’s for channels 8-15.
3. Direct the master to begin polling the JDO. The JDO will continuously issue Read Status
commands to the B1 and update the DeviceNet Poll Response (input data) with the input
data from the B1.

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Table 2-4DeviceNet Consume Assembly / Transmit Data Format
BYTE MEANING
Byte 0 1st B1 data byte, DO’s 0-7
Byte 1 1st B1 data byte, DO’s 8-15
Byte 2 2nd B1 data byte, DO’s 0-7
Byte 3 2nd B1 data byte, DO’s 8-15
….
Byte 19 10th B1 data byte, DO’s 8-15
4. Begin scanning the JDO. Enter data that you want to send on the serial link. On receipt
of a change to the record number, the JDO will transmit the data. If any data is in the
receive buffer, the received data will be returned as a poll response. (If the sequence
number is the same as the previous response, the JDO will not re-send the string.)
2.4 How to Change the Node Address
1. Set the 6-position DIPswitch to the binary number representing the desired Node
Address, 0-63. (Note: Address 0 is often reserved for a Master device.)
2. Power cycle the unit by unplugging and reconnecting the DeviceNet cable.
NOTE: The new address will not become effective until the unit is power cycled or a
Reset command is received from the Master.
2.5 How to Change the Baud Rate
The Baud Rate is set to Autobaud at the factory. The baudrate can be changed through your
configuration tool in its normal manner to any baudrate except Autobaud. This is due to the
fact that Autobaud is not provided for in the DeviceNet specification. If you need to set the
baudrate to Autobaud, you must do it via the parameter object. The definition is included in
the EDS file for easy configuration. Just use your configuration tool to access the device
parameters. The baudrate is parameter 7. Select the proper baudrate and upload the
parameter to the device. If your configuration tool does not support EDS parameter
configuration, you will have to perform the operation manually. To do this, set the parameter
Class 15 (Fhex), instance 7, attribute 1 to the value in Table 2-5.
NOTE:If you change the baudrate, the new baudrate will not become effective until the
unit is power cycled or a reset command is received by the Identity Object (Class 1,
Instance 0, reset).
Table 2-5Baud Rate Selection
Baud Rate Value Baud Rate
0125k
1250k
2500k
3Autobaud

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3General Specifications
Product:1782-JDO Device-Optomux B1 Gateway
Description:Communications gateway between one or more Optomux B1
device(s) on an RS485 interface and a DeviceNet network.
Device Type:Communications Adapter, Chex, (12)
Device Profile:
Identity Object
Message Router Object
DeviceNet Object
Connection Object
Parameter Object
Assembly Objects (2)
Product Revision:1.01
DeviceNet Conformance:Designed to conform to the ODVA DeviceNet Specification
Volume I and II, Version 2.0.
DeviceNet Communications:Predefined Master/Slave Connection Set, Group 2 Only
Server
DeviceNet:
Baud rate selection:
Autobaud operation (default)
Fixed baud (software selectable) –125k, 250k and 500k baud
Address selection:
Address number 0 to 63, switch selectable (default = 63)
Cable Connection:
JDO: 5-pin pluggable header (male)
Phoenix Contact MSTBA 2.5/5-G-5.08/AU or equivalent
DeviceNet Cable: 5-contact plug (female contacts)
Phoenix Contact MSTB 2.5/5-ST-5.08/AU or equivalent
(included)
Status Indicators:
Module Status: green/red bi-color LED
Network Status: green/red bi-color LED
Serial port: Baud rate: 1200, 2400, 4800, 9600, 19.2k, 38.4k baud
(software selectable)
Character Framing: 8-N-1
Cable Connection:
JDO: 3-pin pluggable header (male)
Phoenix Contact MSTBA 2.5/3-G-5.08/AU or equivalent
Serial Cable: 3-contact plug (female contacts)
Phoenix Contact MSTB 2.5/3-ST-5.08/AU or equivalent
(included)
Status Indicators:
Transmit Active: green LED
Receive Active: green LED
Network Isolation:(Optional 2500V RS232)

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Max Power:1.75 watts: 160 mA @ 11 Vdc –70 mA @ 25 Vdc
unregulated power supply
Mounting:DIN rail mount, EN 50022
Size: •Depth: 3.54” (90 mm)
•Width: 0.98” (25 mm)
•Height: 3.11” (79 mm)
Operating Temp:0-60 ºC
Humidity:0-95% RH, non-condensing

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4Hardware Installation and Set-Up
4.1 Overview
The JDO is mounted on an EN50022 DIN rail.
The JDO contains two LED’s to indicate the status of the device and the status of the
network. The device can be connected to the main DeviceNet trunk line or to a drop line via
a 5-pin female plug-style connector. It also has two green LED’s to indicate the presence of
activity on the RS-485 transmit and receive lines.
All power for the JDO is derived from the DeviceNet power.
KEY
0=RIGHT
TOGGLE
ARM
1=LEFT
1782-JDC
DeviceNet Converter
V+
CAN_H
CAN-L
V-
RX
TX
GND
ADDR
=0
N/C
Figure 4-11782-JDO Outline Drawing
4.2 LED Operation
4.2.1 DeviceNet LED’s
The JDO has two LED’s that provide visual status information to the user about the product
and the DeviceNet network. See Tables 5-1 and 5-2 that follow below for how to interpret
LED status indications.

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Table 4-1Module Status LED (labeled MS)
LED State Module Status Meaning
OFF No Power There is no power through DeviceNet.
Green Device Operational JDO is operating normally.
Flashing Green Device in Standby JDO needs commissioning (e.g.
attempting Autobaud).
Flashing Red Minor Fault Recoverable fault.
Red Unrecoverable Fault JDO may need replaced.
Flashing Red/Green Device Self-Testing JDO is in self-test mode.
Table 4-2Network Status LED (labeled NS)
LED State Network Status Meaning
OFF No Power / Not on-line JDO has no power or has not completed
the Dup_MAC_ID test.
Flashing Green On-line, not connected JDO is on-line but is not allocated to a
Master.
Green On-line JDO is operating normally.
Flashing Red Connection time-out One or more I/O connections are timed out.
Red Critical link failure JDO has detected an error that makes it incapable of communicating on the link.
(Bus off or Duplicate MAC ID).
4.2.2 Serial Port LED’s
The JDO also has two (2) RS-485 activity LED’s: one for transmit (TX) and one for receive
(RX). Each of these will illuminate when there is data communications active on the
respective data lines.

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4.3 Serial Port Connector
The ASCII devices are connected to the JDO via a 3-wire communications cable. See your
ASCII device’s User Manual for details on the proper connections.
The RX and TX designators are referenced with respect to the JDO.
Table 4-3RS-232 / RS-485 Connector Signals
Pin # Designator RS232 Signal RS485 Signal
3RX Receive Signal -
2TX Transmit Signal +
1GND Ground Common
4.4 DeviceNet Configuration
DeviceNet specifications provide for a maximum network distances for the main trunk line
and drop lines, depending upon the baud rate used on the network. See Table 4-4
Table 4-4Maximum Network Cable Lengths
Trunk Line Length Drop Length
Maximum Distance Maximum Cumulative
Baud Rate Meters Feet Meters Feet Meters Feet
125k baud 500 m 1640 ft 6 m 20 ft 156 m 512 ft.
250k baud 250 m 820 ft 6 m 20 ft 78 m 256 ft.
500k baud 100 m 328 ft 6 m 20 ft 39 m 128 ft.
4.4.1 DeviceNet Network Termination
A DeviceNet system must be terminated at each end of the trunk line. The host controller
and the last JDO or other DeviceNet device on the network must always be terminated to
eliminate reflections, even if only two nodes are present. The DeviceNet specifications for the
terminating resistor are:
•121 ohm
•1% metal film
•1/4 Watt
An appropriate terminating resistor, WRC part number RM121DN, may be purchased from
WRC.
IMPORTANT:Per the DeviceNet spec -- do not terminate devices on drop lines.
4.4.2 DeviceNet Connection Wiring
The JDO uses a 5-pin plug-style DeviceNet connector, which has male pins.

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Figure 4-2DeviceNet cable connector
4.4.3 RS485 Network Termination (1782-JDO-2)
It is common practice to terminate an RS485 network system at each end of the serial
cable to eliminate electrical reflections. An appropriate value for the terminating resistor
typically is:
•100-120 ohm, depending upon the characteristic impedance of the cable used
o121 ohms (same value as the DeviceNet terminator) is a standard resistor value
that may be used in many cases
•1% metal film
•1/4 Watt
Correct cable termination is the responsibility of the user. The 1782-JDO-2 does not include
an internal terminating resistor.

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5SOFTWARE Configuration and Set-Up
The 1782-JDO is an easy device to set up and configure. Using features like the EDS sheets
for configuration can expedite the process if you use a network configuration tool that
supports them. They provide a graphical interface to the device’s parameters and allow the
addition of helpful text descriptions in setting up your device. The current EDS file is
available on our website, www.wrcakron.com. If your configuration tool does not support the
EDS device profiles, the set up of a DeviceNet device requires a little more understanding of
DeviceNet and its operation. This section is designed to fully describe the features of the
1782-JDO and to help you set them up. If you have problems setting up a device, we are
available to help you. We can be reached via phone at [phone], or via the Internet at
[email protected].
The Parameters are defined in this section.
Table 5-1Configuration Parameter List
Parameter Param.
Instance Access Description Parameter Choices Default Setting Default Value Data Type
Serial
Character
Format 1 Get Character framing Optomux brainboards
use only 8N1 8N1 3 USINT
Serial Baud
Rate 2 Get/Set RS232/ RS485 communicationsspeed
0 =9600
1 = 1200
2 = 2400
3 = 4800
4 = 19.2k
5 = 38.4k 9600 baud
0 USINT
Device Net
Baud Rate 3 Get/Set
The baud Rate of the
device net device. The
baud rate can be set
here and will take
effect once the JDO
has been reset.
0 = 125 Kbaud
1 = 250 Kbaud
2 = 500 Kbaud
3 = Autobaud
Autobaud 3 USINT
Max Number
of B1 Units 4 Get/Set
Maximum number of
B1 units the JDO
expects to read and
write via the serial port
1 – 20 1 unit 1 USINT
Number of
Input Bytes 5 Get
Number of bytes the
JDO will send to the
DeviceNet Master 4-60 One B1 4 USINT
Number of
Output Bytes 6 Get
Number of bytes the
JDO will receive from
the DeviceNet Master
2-40 One B1 2 USINT
Message
Response
Timeout 7 Get/Set
Timeout value for Max
time the JDO will wait
for each unit on the
Optomux network.
1-65535 ms 100 100 UINT
Estimated
Scan Time 8 Get
Estimated time
required to complete a
full scan of Optomux
network
None none none UINT
Actual
Scan Time 9 Get
Actual time required to
complete a full scan of
Optomux network None none none UINT
BB#1 Address
10 Get/Set Optomu
x address for
1st B1 1-255 1 1 USINT
BB#1 Type
11 Get/Set Optomux type 0-1 B1 0 USINT
BB#1 I/O
Configuration
12 Get/Set
Input/output
configuration
0x0000-0xFFFF All inputs 0x0000 UINT

Western Reserve Controls, Inc. 1782-JDO User’s Manual
PRELIMINARY
19
Parameter Param.
Instance Access Description Parameter Choices Default Setting Default Value Data Type
Configuration
configuration 1 bit per I/O point
0 = input
1 = output
BB#1
Watchdog
Action 13 Get/Set
Action taken on output
if no serial com with
Optomux 0x0000-0xFFFF 0x0000 0x0000 UINT
BB#1
Watchdog
Delay 14 Get/Set
Time until action is
taken on output if no
serial com with
Optomux in 10ms ticks
0-65535
in 10ms ticks
0 = Disabled Disabled 0 USINT
BB#1 DN
Output Fault
Action 15 Get/Set
Output actions if no
DeviceNet
communications
0x0000-0xFFFF
1 bit per output:
0 = use fault value
1 = hold last state
Use Fault
Value 0x0000 UINT
BB#1 DN
Output Fault
Value 16 Get/Set Outpu
t actions if no
DeviceNet
communications
0x0000-0xFFFF
1 bit per output:
0 = turn OFF
1 = turn ON
Turn OFF 0x0000 UINT
BB#1 DN
Output Idle
Action 17 Get/Set
Output actions when
DeviceNet in Idle
mode
0x0000-0xFFFF
1 bit per output:
0 = use Idle value
1=hold last state
Use Idle
Value 0x0000 UINT
BB#1 DN
Output Idle
Value 18 Get/Set
Output actions when
DeviceNet in Idle
mode
0x0000-0xFFFF
1 bit per output:
0 = turn OFF
1 = turn ON
Turn OFF 0x0000 UINT
Note: Parameters 10 through 18 are repeated 9 more times for the other 9 brainboards that
can be on the JDO’s local network.
Example: Parameters 19,28,37,46,55,64,73,82,and 91 are the same as parameter 10 above.
Parameter 19 is for brainboard #2. 28 is for brainboard #3, etc.