ELMB Documentation and Framework Component


The Embedded Local Monitor Board ( ELMB) is a general purpose plug-on I/O module for the monitoring and control of subdetector front-end equipment. The ELMB is based on the industry standard CANbus and CANopen has been implemented as high-level communication protocol. It may be used to read analog inputs (such as temperature sensors, voltages, etc.) and for digital input and output. This page contains all documentation and components to set up the ELMB hardware to work with PVSS. The standard way to use the ELMB in ATLAS is to read the data via the CANopen OPC Server, which is also available from this page.

The ELMB project is a collaboration between CERN, NIKHEF, and the Petersburg Nuclear Physics Institute PNPI.


Document Description
PDFELMB User Guide Introduction and general description of ELMB
PDFELMBio User Documentation ELMB Firmware and Object Dictionary description
PDFCANopen OPC Server User Guide CANOpen OPC Server User Guide
PDFATMEGA128L Atmega128L (microprocessor) datasheet
ELMB's page at Open Hardware Repository http://www.ohwr.org/projects/cern-elmb

Recommended Configuration

Middleware ELMB firmware OPC Server JCOP FW fwElmb JCOP FW fwElmbPsu
OPC-UA 4.4.6 2.2.3-42cc7 8.4.0 8.4.0
OPC-DA (deprecated) 4.3.3 or higher 5.2.21 5.0.0 or 8.0.0


The project webpage is: https://gitlab.cern.ch/atlas-dcs-common-software/fwElmb

You may download the JCOP framework fwElmb from the table below:

Usage Version Download Comments, remarks
Production for 3.16 and OPC-UA 8.4.0 https://gitlab.cern.ch/atlas-dcs-fwcomponents/fwElmb/-/archive/8.4.0/fwElmb-8.4.0.tar.gz  
Production for 3.15 and OPC-UA 8.0.4 https://gitlab.cern.ch/atlas-dcs-common-software/fwElmb/repository/8.0.4/archive.tar.gz  
Production for 3.11 and OPC-UA 5.3.4 https://gitlab.cern.ch/atlas-dcs-common-software/fwElmb/repository/5.3.4/archive.tar.gz  
Production for 3.11 and OPC-DA (deprecated) 5.2.21 https://gitlab.cern.ch/atlas-dcs-common-software/fwElmb/repository/fwElmb-5.2.21/archive.tar.gz Also for 3.15 until LS2

Related Software

CANopen OPC UA Server
CANopen OPC DA Server
ELMB firmware

Useful Links

Link Description
ELMB Hardware Contains technical information on the ELMB hardware
ELMB CANbus Simulator A simulator allowing for voltage levels over a long CANbus to be simulated
NIKHEF webpage NIKHEF webpage with ELMB info
ELMB Firmwares/Softwares Contains executables and sources of the ELMBio (Link to the NIKHEF site)
Responsible: Main.unknown
Last reviewed by: Never reviewed
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Topic revision: r93 - 2020-05-12 - PiotrNikiel
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