Gateway Assembly Overview
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Gateway Assembly Overview
The Gateway Network Communication Assembly
(referred to as Gateway Assembly throughout this man-
ual) enables various Graco systems to communicate
with PLCs (programmable logic controllers) and network
communication systems. Communication assemblies
are available for many different communication proto-
cols, including Modbus TCP, Ethernet IP, DeviceNet,
and Profibus. The Gateway Assembly supports many
other protocols; contact Graco Technical Assistance for
information to support your desired protocol.
NOTE:
Only persons very familiar with their PLC and
Network communication architecture should use this
hardware and software. This manual assumes that the
person using the Gateway Assembly has full under-
standing of the PLC equipment and related software.
NOTE:
Network communications essentially operate
with the same rules as Discrete I/O. However, network
communications require placing correct values or
adjusting appropriate bits within various registers
depending on the protocol. Network communications
should only be installed by qualified persons familiar
with this type of communication.
The Red Lion Gateway Module allows for most PLCs to
communicate with the various Graco systems via the
protocol selected by mapping registers from the Graco
system to the PLC or communications hardware of
choice. Software is available to do this, as well as pre-
configured database mappings from Graco for various
Graco systems. As a result, the PLC has full access to
all the registers for monitoring and controlling the Graco
system. It is the responsibility of the integrator or user to
ensure proper configuration of the communication hard-
ware on the PLC side.
NOTE:
The Red Lion Gateway Module (Graco part no.
18C235) used in each Gateway Assembly is the core
communication component of all five Gateway
Assembly models covered in this manual. The Red Lion
Gateway Module includes Modbus TCP, Modbus RTU
Serial, and many other protocols.
Gateway Terminology
The following terminology is used throughout this
manual when referring to Gateway Assemblies and
components:
Gateway Assemblies
Model 25B471 Gateway Ethernet Assembly
Allows communication between various Graco systems
with a PLC and other communications hardware over an
ethernet. Enables process equipment to read and write
communication network variables from various Graco
systems.
Model 25B472 Gateway DeviceNet
Assembly
Allows communication between various Graco systems
with a PLC and other communications hardware using
DeviceNet process control. Enables process equipment
to read and write variables from various Graco systems.
See
on page 32 for DeviceNet details.
Model 25B473 Gateway Profibus Assembly
Allows communication between various Graco systems
with a PLC and other communications hardware using
Profibus process control. Enables process equipment to
read and write variables from various Graco systems.
See
on page 35 for DeviceNet details.
Term
Definition
Gateway
Module
Red Lion Gateway and protocol
converters.
Gateway
Assembly
A Red Lion Gateway Module with an
enclosure and power supply.
Graco System
Controller
Any Graco System Controller like, but
not limited to, EasyKey, ProDispense,
ProControl 1KE Plus, Graco
DCM/ADCM, ACS, etc.
