3-7
Brooks
®
Model SLA5840
Section 3 Operation
Installation and Operation Manual
X-PR-SLA5840-Series-RevB-RT-eng
Part Number: 541B201AAG
October, 2017
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).
Reference the Brooks document "Supplemental Manual for Profibus
Communications for Brooks
®
MFCs/MFMs/PCs/RTs, for SLA5800/SLAMf
Revsion B Series" (X-DPT-Profibus-SLA5800-SLAMf-Series-RevB-MFC-
PC-RT-eng) for more details regarding the capabilities of this
communication interface.
3-5-3 DeviceNet Communications Features
The Brooks SLA5840 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 SLA 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)
Reference the Brooks document "Supplemental Manual for DevicNet
Communications for SLA5840 Revsion B Series" (X-DPT-DeviceNet-
SLA5840-Series-RevB-RT-eng) for more details regarding the capabilities
of this communication interface.
