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Appendix A: DeviceNet
®
Secondary Communication
32
3A7639A
Appendix A: DeviceNet
®
Secondary Communication
Overview
This appendix describes the Gateway’s support for
DeviceNet and details the configuration steps necessary
to use this feature. It does
not
provide a detailed
description of DeviceNet, but only a brief introduction,
necessary to define the terms that are used throughout
the remainder of this document.
Introduction
DeviceNet is a low-level network using the Controller
Area Network (CAN) technology, to provide communica-
tion between a range of industrial devices, from simple
devices such as sensors and actuators, to high-level
devices such as controllers and HMIs.
DeviceNet Port Protocols
The DeviceNet option card has one DeviceNet port. See
F
IG
. 21. The port may be configured for various Devi-
ceNet protocols. Contact Graco Technical Assistance
for currently supported protocols.
DeviceNet Option Card Pin Outs
•
V-
Position 1 of the pluggable connector provides a
CAN ground connection. This terminal is isolated
from the Gateway Assembly.
•
CAN_L
Position 2 of the pluggable connector provides the
CAN_L bus line (active low). This terminal is iso-
lated from the Gateway Assembly.
•
DRAIN (optional)
Position 3 of the pluggable connector is provided for
optional drain connections. This position is available
only to tie drain wires together or to earth ground.
There is no internal connection to earth ground. The
DRAIN position is not connected to any circuitry
internal to the DeviceNet option card.
•
CAN_H
Position 4 of the pluggable connector provides the
CAN_H bus line (active high). This terminal is iso-
lated from the Gateway Assembly.
•
V+ (optional 24 Vdc)
Position 5 of the pluggable connector is provided for
optional 24 Vdc connections. This position is avail-
able only to tie 24 Vdc wires together. The Devi-
ceNet option card neither provides or uses 24 Vdc
power through this connection. The V+ position is
not connected to any circuitry internal to the Devi-
ceNet option card or Gateway Assembly.