ISA RP55.1 : 1975

1 Scope
2 Factors to be considered
   2.1 Use of the standard
   2.2 Methods of compliance
   2.3 Sequence, duration, and location of tests
   2.4 Acceptance criteria for tests
   2.5 Quantity of hardware tested
   2.6 Special functions
   2.7 Test equipment
   2.8 Cost of testing
3 Recommended test, central processing unit
   3.1 Objectives
   3.2 Equipment to be tested
   3.3 Test procedures
4 Recommended tests, data processing input-output
   subsystems
   4.1 Objectives
   4.2 Equipment to be tested
   4.3 Test procedures
5 Recommended tests, digital inputs and outputs
   5.1 Objectives
   5.2 Equipment to be tested
   5.3 Test procedures
6 Recommended tests, analog inputs
   6.1 Objectives
   6.2 Equipment to be tested
   6.3 Test procedures
7 Recommended tests, analog outputs
   7.1 Objectives
   7.2 Equipment to be tested
   7.3 Test procedures
8 Recommended tests, interacting system
   8.1 Objectives
   8.2 Equipment to be tested
   8.3 Test procedures
9 Recommended tests, environmental
   9.1 Objectives
   9.2 Equipment to be tested
   9.3 Test procedures
10 Documentation
   10.1 Definition
   10.2 Types of documents
   10.3 Extent of documentation
   10.4 User-vendor agreement
11 Glossary
   11.1 Sources of definitions
   11.2 Definitions
Appendix A - Analog input subsystem accuracy
Appendix B - Interacting systems
Appendix C - Environment

Identifies a basis for evaluation of functional hardware performance of digital process computers. Process computers are characterized by capability to acquire real-time data from a process in digital or analog form. Also, a process computer is usually capable of providing digital and analog control signals to the process. Deals with general recommendations covering all hardware performance testing, specific tests for relevant subsystems and system parameters, and a short glossary specifying terms used in the Recommended Practice. Detailed specifications are needed to define system acceptance criteria, and these should be negotiated between vendor and user before the system is contracted.