User`s manual

Watlow EZ-ZONE™ Communications • 42 • Chapter 4 DeviceNet

V+

CAN_

Shield

CAN_L

V-

Signal Function

V+ DeviceNet power

CAN_H Positive side of the DeviceNet bus

Shield Shield interconnect

CAN_L Negative side of the DeviceNet bus

V- DeviceNet power return

Commissioning the PM Using RSNetWorx for DeviceNet

The first step in getting your PM control up and running is to commission it over DeviceNet. The commis-

sioning process involves identifying and selecting the appropriate communication parameters, node address,

and lastly, memory mapping so as to enable passing data to and from specific addresses in the Device-Net

scanner and the PLC. Set the baud rate and node address (as was described above) prior to connecting it on

the network to avoid conflicts with baud rate or other devices on the network.

After the PM is physically connected in the network you should notice that the "Module" LED (MS, as

identified on the PM) should be solid green where the "Network" LED (NS, as identified on the PM) should be

blinking green (see definition above). Follow the steps below to establish connectivity over the network:

1. Open up RSLinx and configure the appropriate driver for the DeviceNet hardware you have on-hand.

Note: Keep in mind that there is a lot of available hardware to choose from. In the example below the hard-

ware chosen is the Allen-Bradley 1770-KFD. You must first identify the hardware you are using.

2. Verify that you have communications using the configured driver & hardware by clicking on RSWho.

- Notice in figure 4.2 that three devices appear on the network where one device has a question mark. The

question mark does not indicate a problem but does indicate that the EDS file associated with this device

is not yet registered.

1. Push and hold the up and down arrow keys on the front panel for six seconds to go the the Setup Menu.

2. Push the up or down arrow key until [`CoM] (Communications Menu) appears in upper display and

[`SEt] in the lower display.

3. Push the green Advance Key ‰ to enter the Communications Menu [`CoM].

4. Push up arrow key to go to the Communications 2 Submenu. The upper display shows [```2], and the

lower display shows [`CoM].

5. Push the Advance Key ‰ three times where the upper display will show [no] (default) and lower display

shows [FC;E].

6. Push the up or down arrow to change from no to yes.

DeviceNet Connector

As can be seen in graphics below there is just one connector that is used to connect your PM control to

the DeviceNet network. Figure 4.0 shows the back side the PM control where the connector on the far left is

identified as slot A, the middle slotB, and the far right as slot C. The DeviceNet card will always reside in the

middle slot or slot B and will be connected into the network accordingly. Figure 4.1 shows the Watlow sup-

plied DeviceNet connector along with signal orientation.

Figure 4.0

Figure 4.1