4-3
Section
Connecting to the DeviceNet Network
45
4-2
Mounting the Unit on the PT
Mount the DeviceNet Interface Unit to the Expansion Interface Connector on the
back of the PT as shown in the following diagram. (The Expansion Interface
Connector is under the “note” label.) This example shows an NT31/NT31C PT.
Mounting screws
Note
1. Always turn OFF the PT before installing or removing the DeviceNet Inter-
face Unit.
2. Always tighten the two mounting screws after mounting the Unit on the PT.
3. Do not touch the printed circuit board with your bare hands. Discharge the
static electricity from your body before handling the board.
4-3
Connecting to the DeviceNet Network
This manual primarily explains how to connect the DeviceNet Interface Unit to a
DeviceNet network. For details on connecting other Slaves or Masters, refer to
the individual Unit’s manuals.
4-3-1 Connecting Communications Cables
This section explains how to prepare and connect the communications cables to
connectors for the DeviceNet network.
Use the following procedure to prepare and connect the communications cables
to the connectors. Some connectors are equipped with set screws and some are
not; only use connectors with set screws with the DeviceNet Interface Unit.
1, 2, 3...
1. Remove approx. 30 to 80 mm of the cable covering, being careful not to
damage the shield weaving underneath. Do not remove more than about
30 mm; removing too much of the covering can result in short circuits.
Approx. 30 to 80 mm
2. Carefully peel back the weaving. You’ll find the signal lines, power lines, and
the shielding wire. The shielding wire will be loose on the outside of the other
lines, but it is harder than the weaving and should be easily identified.
Shielding wire
