RELIANCE O-57C408-B Digital quantity control module

The following publications are available from the sources indicated: Versatile Backplane Bus: VMEbus, ANSI/IEEE Std 1014-1987, The Institute of Electrical and Electronics Engineers, Inc., 345 East 47th Street, New York, NY 10017 (VMEbus Specification). This is also available as Microprocessor system bus for 1 to 4 byte data, IEC 821 BUS, Bureau Central de la Commission Electrotechnique Internationale; 3, rue de Varembé, Geneva, Switzerland. ANSI Small Computer System Interface-2 (SCSI-2), Draft Document X3.131-198X, Revision 10c; Global Engineering Documents, P.O. Box 19539, Irvine, CA 92714.

Manual Terminology

An asterisk (*) following the signal name for signals which are edge significant denotes that the actions initiated by that signal occur on high to low transition. In this manual, assertion and negation are used to specify forcing a signal to a particular state. In particular, assertion and assert refer to a signal that is active or true; negation and negate indicate a signal that is inactive or false. These terms are used independently of the voltage level (high or low) that they represent.Data and address sizes are defined as follows: 

❏ A byte is eight bits, numbered 0 through 7, with bit 0 being the least significant 

❏ A word is 16 bits, numbered 0 through 15, with bit 0 being the least significant 

❏ A longword is 32 bits, numbered 0 through 31, with bit 0 being the least significant

Introduction

 This chapter provides the following for the MVME177: 

❏ Unpacking instructions 

❏ Hardware preparation 

❏ Installation instructions The MVME712x transition module hardware preparation is provided in separate manuals. Refer to Related Documentation in Chapter 1.

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