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In addition to the base load, the following handling times apply to the various I/O channels.
All times are in msec and per channel, where not otherwise indicated.
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In addition to the base load of the PC interpreters (included in base load given above), the CPU
load generated by the PC system is composed of the following parts:
•
PC element execution. The PC element manual contains information on the load from each
PC element.
•
Reading and writing of data to/from the data base. Each time a value is read from the data
base to a PC element, or written to the data base from a PC element, 2 microsecs are spent.
When a process output channel is written, add the time for I/O handling.
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(each execution)
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(VALUE changed)
(1) Channels with NORMAL_TREAT = 1 (event handling selected) will give rise to
increased load when the event occurs, which means VALUE changed (DI) or
LIMIT exceeded (AI), this is not included in the table. However this is taken care
of by having the stipulated reserve capacity.
AI
0.20
0.15
DI scanned
0.20/board
0.05
DI interrupt
--
0.60
AO
0.02
0.18
DO
0.003
0.13
AIC
0.003
0.08
DIC
0.003
0.05
AOC
0.003
0.03
DOC
0.003
0.03
Summary of Contents for Advant Controller 450
Page 1: ...Advant OCS with Master software GYDQW RQWUROOHU User s Guide 3BSE 002 415R701 Rev A ...
Page 26: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xvi ...
Page 30: ...Advant Controller 450 User s Guide Table of Contents 3BSE 002 415R701 Rev A xx ...
Page 488: ... GYDQW RQWUROOHU 8VHU V XLGH SSHQGL DUGZDUH 0RGXOHV A 48 3BSE 002 415R701 Rev A ...
Page 508: ...Advant Controller 450 User s Guide Appendix D Item Designations D 12 3BSE 002 415R701 Rev A ...
Page 518: ...Advant Controller 450 User s Guide Appendix F Load Calculation F 4 3BSE 002 415R701 Rev A ...
Page 522: ...Advant Controller 450 User s Guide Appendix G Memory Calculation G 4 3BSE 002 415R701 Rev A ...
Page 528: ...Advant Controller 450 User s Guide Appendix H Halt Codes H 6 3BSE 002 415R701 Rev A ...
Page 562: ...Advant Controller 450 User s Guide Index iv 3BSE 002 415R701 Rev A ...
Page 563: ......
Page 564: ...3BSE 002 415R701 Rev A March 2000 ...