Introduction

The ibaLink-SM-128V-i-2o VMEbus Interface Card is a multi-purpose, bi-directional interface card designed for use in VMEbus-compatible PLCs and computer systems.

It can be used for both data acquisition and process monitoring as well as for control system applications such as the ibaLogic SoftPLC.

In the following, the board will be named SM128V to simplify the description.

Key features of the SM128V include :

 1 bi-directional fiber optic link with 64A+64D inputs/outputs per link (channel 1)

 1 unidirectional fiber optic link with 64A+64D outputs per link (channel 2)

 Synchronized transmission of all channels on both links at a rate of 1ms

 Address switch for cascading up to 8 SM128V www.cniacs.com interface cards on a link

Channel 1

 Compatible interface for ibaFOB-io, ibaFOB -4i (-S), ibaFOB-4o

 Compatible process i/o interface for ibaPADU-8-IO series and ibaNet750-BM series

 5 V power supply from VMEbus

The SM128V is available for VME32 and VME64 systems. The card requires a 5 V power supply.

The following non-privileged modes of VME access are possible:

 A24 and A32 in the following VMEbus data formats

 D08 (E0)

 D16

 D32

 A40 MD32 (on special request)

The BLT and MBLT modes as well as the auto-configuration and geo-addressing functions are being prepared, but are not available at this time.

The 2eVME mode has not yet been implemented. Access is only allowed in unprivileged data access mode.

The SM128V is a passive board on the VMEbus, i.e., it will not be actively accessed or interacted with on the VMEbus.

The board uses 256 kbytes of address space on the VMEbus.