3-6
Brooks
®
Digital MFC's & MFM's
Section 3 Operation
Installation and Operation Manual
X-TMF-SLA5800-Series-RevB-MFC-eng
Part Number: 541B187AAG
January, 2017
3-5-2
DeviceNet Communications Features
The Brooks SLA5800 Digital Series is also available with DeviceNet
TM
communication capability. DeviceNet is an open digital protocol capable of
high speeds and easy system connectivity. Brooks Instrument has several
of its devices available on this popular networking standard, and is a
member of ODVA
TM
(Open DeviceNet Vendors Association), the governing
standard body for DeviceNet.
DeviceNet
is similar to the RS485 standard in that it is a multi-drop connection
that allows a maximum of 64 devices to be connected on the same network.
Baud rate selections for DeviceNet
products are 125K, 250K and 500K and
can be selected via MAC ID switches mounted on the device.
The DeviceNet
communication link also provides access to many of the Brooks
SLA5800 Digital Series functions for “control and monitor” operations, including:
•
Accurate setpoint adjustment and flow output measurement (including
units of measure selection)
•
PID Settings (controller only)
•
Valve Override (controller only)
•
Calibration Gas Select
•
Soft Start Control (controller only)
3-5-3
Profibus Communications Features
The communication electronics allows for automatic baud rate detection
ranging from 9600 baud to 12 Mbaud, thus making the need for any
hardware baud rate selection methods not required. For selecting the
device address, which must be unique on the network, two rotary switches
are provided. This allows a user to easily select any address number
ranging from 0 to 126. This can provide fast device replacement without
complex network configurations.
The Profibus-DP communication option supports the following message types:
• Cyclic data exchange (Write/Read data).
• Read inputs (e.g. status, flow, temperature, totalizer, etc.).
• Read outputs (e.g. commands, setpoint).
• Global control commands (e.g. fail safe, sync).
• Get configuration (i.e. read number of I/O bytes and composition).
• Read diagnostics information (i.e. get error and alarm status).
• Set parameters (i.e. select gas number, engineering units, I/O configuration
• Set parameters (i.e. select gas number, engineering units, I/O
configuration etc.).
• Check configuration (i.e. check I/O composition).
3-5-4
EtherCAT Communications Features
Brooks lnstrument now introduces the state-of-the-art EtherCAT
communications interface on its SLA Enhanced Series platform.
Many applications of Flow Controllers/Meters are moving to increase the
use of automation. Automation comes in many forms including Ethernet
based field buses. Digital communications from these varied systems and
the devices they measure and control, are a very effective means of not
only accomplishing more effective and rapid system integration, but also
providing greatly improved system diagnostics and maintainability.
