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VME-PCI Optical Link Bridge
The V2718 is a VME to PCI Optical Link Bridge, housed in a 1-unit wide VME 6U module. The unit acts as a VME Master module and can be controlled by a standard PC equipped with PCI or PCIe CAEN Controller cards (Models A2818 and A3818). The connection between the V2718 and the Controller takes place through an optical fibre cable (AI2700 - Optical Fiber Series). Multi-crate sessions can be easily performed, since up to eight daisy chained V2718 (via optical fibre cables) can be controlled by a single A2818/A3818, thus building a CONET (Chainable Optical Network).

The V2718 can perform all the cycles foreseen by the VME64 (except those intended for 3U boards). The board can operate as VME System Controller (normally when plugged in the slot 1) acting as a Bus Arbiter in Multi-Master systems. The VME bus activity can be monitored in detail, both locally (through a LED display) and remotely.

The front panel includes also 5 TTL/NIM programmable outputs on LEMO 00 connectors (default assignment is: DS0/1, AS, DTACK, BERR and LOCATION MONITOR) and two programmable TTL/NIM inputs (on LEMO 00 connectors). The I/Os can be programmed via USB in order to implement functions such as Timer, Counter, Pulse generator, I/O register, etc.. The LED display and the TTL/NIM I/Os are not available on Mod. V2718LC version.

The sustained data transfer rate is up to 80 MByte/s. Thanks to the 128KByte memory buffer, the activity on the VME bus is not slowed down by the transfer rate on the CONET when several V2718 units share the same network.

The Module can be integrated into the most common PC platforms (Windows XP/Vista/7/8, Linux) thanks to the A2818/A3818 drivers; also, it is provided with libraries and useful example programs in C/C++, .NET and LabVIEW. Firmware upgrade can be performed via PCI/PCIe.
Packaging 1-unit wide and 6U high VME module
PC Interface Optical Link
Transfer rate up to 70 MByte/s (CONET1);
up tp 80 MByte/s (CONET2)
Addressing A16, A24, A32, CR/CSR, LCK; ADO, ADOH cycles
Data cycles D08, D16, D32 for R/W and RMW, D16, D32 for BLTD64 for MBLT
Interrupt cycles D08, D16, D32, IACK cycles
Interrupts transfer and monitor VME interrupts IRQ[7:1] passed directly from VME to the PCI/PCIe bus via optical link
host system is notified asynchronously (polling not required)
LED display Data bus, address bus, address modifier, interrupt request, control signals
Panel outputs 5 NIM/TTL programmable (default: DSn, AS, DTACK, BERR, LMON)
Panel inputs 2 NIM/TTL programmable
Description Release Date OS-Version Environment Download
Firmware CONET1 Compliant
Firmware   V2718 Firmware CONET 1 Compliant 0.5 Jan, 2011
FW Package 80.77 KB - Type: .zip Download
Release Notes 9.83 KB - Type: .txt Download
Firmware CONET2 Compliant
Firmware   V2718 FW CONET2 Compliant 2.14_1.5 April, 2014
Release Notes 11.75 KB - Type: .txt Download
FW Package 85.0 KB - Type: .zip Download

Related Models
Family Name Description
Digitizer Software CAENVMELib Library Interface library for CAEN VME Bridges
Digitizer Software CAENUpgrader Firmware Upgrade Tool for Front-end Boards Bridges & VME Power Supply
Digitizer Software CAEN VME Demos Demo applications for CAEN Bridges control

Code Description
WV2718LCXAAA V2718LC - VME-PCI Bridge (Rohs compliant)
WK2718LCXAAA V2718KITLC - VME-PCI Bridge (V2718)+PCI Optical Link (A2818)+Optical Fibre 5m duplex (AY2705) (Rohs)
WV2718XAAAAA V2718 - VME-PCI Bridge
WK2718XAAAAA V2718KIT - VME-PCI Bridge (V2718) + PCI OpticalLink (A2818) + Optical Fibre 5m duplex (AY2705)
WK2718XBAAAA V2718KITB - VME-PCI Bridge (V2718) + PCIe Optical Link (A3818A) + Optical Fibre 5m duplex (AY2705)
Model Package Function Description Compare
All - Reset
V1718 VME Controller (VME) VME-USB2.0 Bridge
V2718 VME Controller (VME) VME-PCI Optical Link Bridge
VX1718 VME Controller (VME) VME-USB2.0 Bridge
VX2718 VME Controller (VME) VME-PCI Optical Link Bridge

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Software License

Copyright © 1998-2015 C.A.E.N. S.p.A

Licence Agreement for "CAEN Software or Firmware" (collectively, the "CAEN SwFw")

By using or distributing this CAEN SwFw (or any work based on the CAEN SwFw) you shall be deemed to have accepted the terms and conditions set out below.

C.A.E.N. S.p.A ("C.A.E.N.") is making this CAEN SwFw freely available on the basis that it is accepted as found and that the user checks its fitness for purpose prior to use.

The CAEN SwFw is provided 'as-is', without any express or implied warranties whatsoever. In no event will the authors, partners or contributors be held liable for any damages, claims or other liabilities direct or indirect, arising from the use of this CAEN SwFw or any derivative work.

C.A.E.N. will from time to time make CAEN SwFw updates available. However, C.A.E.N. accepts no obligation to provide any support to free licence holders.

C.A.E.N. grants you a limited non-exclusive licence to use this CAEN SwFw for any purpose, including commercial applications and redistribute it freely, subject to the following restrictions:

  1. The origin of this CAEN SwFw must not be misrepresented; you must not claim that you wrote the original CAEN SwFw.
  2. You must not alter the CAEN SwFw, user licence or installer in any way.
  3. This notice may not be removed or altered from any distribution.
  4. You may not resell or charge for the CAEN SwFw.
  5. You may not reverse engineer, decompile, disassemble, derive the source code of or modify the CAEN SwFw in order to resell, rent, lease, loan, derivative works.
  6. You must not use CAEN SwFw to engage in or allow others to engage in any illegal activity.
  7. You may not claim any sponsorship by, endorsement by, or affiliation with our company.
  8. You acknowledge that C.A.E.N. owns the copyright and all associated intellectual property rights relating to the CAEN SwFw except to the extent that the CAEN SwFw includes identifiable separate components originating from the CAEN SwFw.

1.†††††††††††Licensed Uses and Restrictions.

CAEN SwFw applications, documentation, and local computer files installed or utilised by the installer application are owned by C.A.E.N., and are licensed to you on a worldwide (except as limited below), non-exclusive, non-sublicenseable basis on the terms and conditions set forth herein. This CAEN SwFw Licence defines legal use of the CAEN SwFw, all updates, revisions, substitutions, and any copies of the CAEN SwFw made by or for you. All rights not expressly granted to you are reserved by C.A.E.N. or their respective owners.

A. (i) YOU MAY install and personally use the CAEN SwFw and any updates provided by C.A.E.N. (in its sole discretion) in object code form on a personal computer or on board on CAEN Products owned or controlled by you and may use the CAEN SwFw for your own non commercial use or benefit. Your licence to the CAEN SwFw under this CAEN SwFw Licence continues until it is terminated by either party. You may terminate the CAEN SwFw Licence by discontinuing use of all or any of the CAEN SwFw and by destroying all your copies of the applicable CAEN SwFw. This CAEN SwFw Licence terminates automatically if you violate any term of this CAEN SwFw Licence, C.A.E.N. publicly posts a written notice of termination on C.A.E.N.ís web site, or C.A.E.N. sends a written notice of termination to you.

A. (ii) You may make a CAEN SwFw copy only if it is necessary for its use.


(i) decompile, reverse engineer, disassemble, modify the CAEN SwFw or any portion thereof in order to resell, rent, lease, derivative works (as defined by the Italian Copyright Act, l.22 April 1941, n.633 and following amendments) or improvements (as defined by Italian patent law), without C.A.E.N.ís prior, express, written permission.

(ii) incorporate the CAEN SwFw into any computer chip or the firmware of a computing device manufactured by or for you except in those where you have received.

(iii) use the CAEN SwFw in any unlawful manner, for any unlawful purpose.

(iv) you may not use the CAEN SwFw to operate nuclear facilities, life support, or other mission critical application where human life or property may be at stake. You understand that the CAEN SwFw is not designed for such purposes and that its failure in such cases could lead to death, personal injury, or severe property or environmental damage for which C.A.E.N. is not responsible.

(v) use or export the CAEN SwFw in violation of applicable Italian laws or regulations

(vi) sell, lease, loan, distribute, transfer, or sub-license the CAEN SwFw or access thereto or derive income from the use or provision of the CAEN SwFw, whether for direct commercial or monetary gain or otherwise, without C.A.E.N.ís prior, express, written permission.

C. As provided from Berna Convention concerning the Protection of Works of Art and Literature acknowledged in Italy with Law 20 June 1978, n. 399, the provisions of this agreement can not be interpreted to allow their application is a jeopardizing event for the owner of the rights or is in conflict with the ordinary use of the CAEN SwFw

2.†††††††††††Ownership and Relationship of Parties.

The CAEN SwFw is protected by copyrights, trademarks, service marks, international treaties, and/or other proprietary rights and laws of the U.S. and other countries. You agree to abide by all applicable proprietary rights laws and other laws. C.A.E.N. owns all rights, title, and interest in and to their applicable contributions to the CAEN SwFw. This CAEN SwFw Licence grants you no right, title, or interest in any intellectual property owned or licensed by C.A.E.N., including (but not limited to) the CAEN SwFw and the C.A.E.N. trademarks, and creates no relationship between you and C.A.E.N. other than that of C.A.E.N. to licensee.

You agree that you will use the CAEN SwFw, and any data accessed through the CAEN SwFw, for your own personal non-commercial use only. You agree not to assign, copy, transfer, or transmit CAEN SwFw. Your licence to use the CAEN SwFw will terminate if you violate these restrictions. If your licence terminates, you agree to cease any and all use of the CAEN SwFw. All rights in any third-party data, any third-party CAEN SwFw, and any third-party data servers, including all ownership rights are reserved and remain with the respective third parties. You agree that these third parties may enforce their rights under this Agreement against you directly in their own name.

3.†††††††††††Support and CAEN SwFw Updates.

C.A.E.N. may elect to provide you with customer support and/or CAEN SwFw upgrades, enhancements, or modifications for the CAEN SwFw (collectively, "Support"), in its sole discretion, and may terminate such Support at any time without notice to you. C.A.E.N. may change, suspend, or discontinue any aspect of the CAEN SwFw at any time, including the availability of any CAEN SwFw feature, database, or content. C.A.E.N. may also impose limits on certain features and services or restrict your access to parts or all of the CAEN SwFw or the C.A.E.N. web site without notice or liability.

4.†††††††††††Fees and Payments.

C.A.E.N. reserves the right to charge fees for future use of or access to the CAEN SwFw in C.A.E.N.'s sole discretion. If C.A.E.N. decides to charge for the CAEN SwFw , such charges will be disclosed to you 28 days before they are applied.

5.†††††††††††Disclaimer of Warranties by C.A.E.N.

Use of the CAEN SwFw and any data accessed through the CAEN SwFw is at your sole risk. They are Provided "as is."

Any service or otherwise obtained through the use of the CAEN SwFw is done at your own discretion and risk, and you will be solely responsible for any damage to your computer system or loss of data that results from the download and/or use of any such material or service.

C.A.E.N., its officers, directors, employees, contractors, agents, affiliates, and assigns (collectively, "C.A.E.N. Entities"), and C.A.E.N.ís Licensors do not represent that the CAEN SwFw or any data accessed therefrom is appropriate or available for use outside Italy.

The C.A.E.N. Entities and C.A.E.N. Licensors expressly disclaim all warranties of any kind, whether express or implied, relating to the CAEN SwFw and any data accessed therefrom, or the accuracy, timeliness, completeness, or adequacy of the CAEN SwFw and any data accessed therefrom, including the implied warranties of title, merchantability, satisfactory quality, fitness for a particular purpose, and non-infringement.

If the CAEN SwFw or any data accessed therefrom proves defective, you (and not the C.A.E.N. Entities, or the C.A.E.N. Licensors) assume the entire cost of all repair or injury of any kind, even if the C.A.E.N. Entities, or C.A.E.N. Licensors have been advised of the possibility of such a defect or damages. Some jurisdictions do not allow restrictions on implied warranties so some of these limitations may not apply to you.

6.†††††††††††Limitation of liability.

Notwithstanding any other provision, nothing in this CAEN SwFw Licence shall exclude or limit either party's liability for the tort of deceit, fraudulent misrepresentation, death or personal injury caused by negligence.

The C.A.E.N. Entities and C.A.E.N. Licensors will not be liable to you for claims and liabilities of any kind arising out of or in any way related to the use of the CAEN SwFw or any derivative work by yourself or by third parties, to the use or non-use of any brokerage firm or dealer, or to the sale or purchase of any security, whether such claims and liabilities are based on any legal or equitable theory.

The C.A.E.N. Entities and C.A.E.N. Licensors are not liable to you for any and all direct, incidental, special, indirect, or consequential damages arising out of the use or inability to use the CAEN SwFw or any derivative work, arising out of or related to any third-party CAEN SwFw or any derivative work , any data accessed through the CAEN SwFw or any derivative work, your use or inability to use or access the CAEN SwFw or any derivative work, or any data provided through the CAEN SwFw or any derivative work , whether such damage claims are brought under any theory of law or equity. Damages excluded by this clause include, without limitation, those for loss of business profits, injury to person or property, business interruption, loss of business or personal information. Some jurisdictions do not allow limitation of incidental or consequential damages so this restriction may not apply to you.

Information provided through the CAEN SwFw , may be delayed, inaccurate, or contain errors or omissions, and the C.A.E.N. Entities and C.A.E.N. Licensors will have no liability with respect thereto. C.A.E.N. may change or discontinue any aspect or feature of the CAEN SwFw or the use of all or any features or technology in the CAEN SwFw at any time without prior notice to you, including, but not limited to, content, hours of availability.


You are solely responsible for compliance with agreements you have executed with third parties. You agree to indemnify and hold the C.A.E.N. Entities harmless from any claim or demand, including reasonable legal fees, made by any third party in connection with or arising out of your use of the CAEN SwFw, your violation of any terms or conditions of this CAEN SwFw Licence, your violation of applicable laws, or your violation of any rights of another person or entity.

8.†††††††††††Controlling Law.

This CAEN SwFw Licence and the relationship between you and C.A.E.N. is governed by the laws of Italy.
This Agreement shall be construed and governed by Italian Law.
The United Nations Convention on the International Sale of Goods does not apply to this CAEN SwFw Licence.
Any dispute arising out of or in connection with this Agreement shall be referred to and finally resolved by Arbitration under the provisions of Italian Law (c.p.c. art 816 and following.) by one Arbitrator.
The Arbitrator shall be nominated from Chairman of the Court of Milan.
The place of Arbitration shall be Milan, Italy and the language shall be English.


This CAEN SwFw Licence constitute the entire understanding between the parties respecting use of the CAEN SwFw, superseding all prior agreements between you and C.A.E.N.. In the event of any conflict between the terms and conditions of this CAEN SwFw Licence, the terms and conditions of this CAEN SwFw Licence will control

10.†††††††††††Surviving Provisions.

Sections 2, and 4 through 10, will survive any termination of this Agreement.


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