Western Reserve Controls, Inc.
1782-JDO User’s Manual
PRELIMINARY
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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.
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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.
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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/
.
