Western Reserve Controls, Inc.
1782-JDO User’s Manual
PRELIMINARY
8
2 Quick 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
