S800 I/O Station Data Scanning
Section 3 Technical Data and Performance
138
3BSE015969-600 A
Calculation of Bus Cycle Time
How to calculate the Bus Cycle Time, see documentation for current master.
To calculate the Bus Cycle Time the following parameters for the I/O station shall
be used:
Number of input and output bytes.
MAX T
SDR
Maximum Station Delay of Responder in T
BIT
(Bit Time).
See GSD file.
S800 I/O Station Data Scanning
The ModuleBus data is scanned (read or written) cyclically, depending on the I/O
module configuration. To calculate the I/O scan cycle time in the FCI do as follows:
Totalize (number of module type x) * (used execution time for type x)
) if the value is a multiple of 2, add 2 to the value. Otherwise increase
the total value to the nearest higher multiple of 2 to get the I/O scan cycle time.
If CI810A or C1810B is used, the scan cycle time is increased by 25% and for
CI820 it is increased by 50%. If the value is a multiple of 2, add 2 to the value.
Otherwise increase the value to the nearest higher multiple of 2, to get the I/O cycle
time.
Table 28. I/O Scan Cycle Time in the FCI
Module Type
Execution Time Used in ms
CI801
CI810,
CI820
CI840
Single I/O
Redundant
I/O pair
AI801, AI810, AI890, AI895
3.00
3.00
3.00
-
AI820
1.50
1.50
1.50
-
AI825
1.50
-
1.50
-
AI830, AI830A, AI835, AI835A
0.40
0.40
0.40
-
AI893
0.40
-
0.40
-
Содержание S800
Страница 1: ...Power and productivity for a better world S800 I O Product Guide ...
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Страница 3: ...S800 I O Product Guide ...
Страница 8: ...Table of Contents 8 3BSE015969 600 A ...
Страница 14: ...New in this Release About This Product Guide 14 3BSE015969 600 A ...
Страница 16: ...16 3BSE015969 600 A Safety Summary ...
Страница 78: ...ModuleBus Section 2 Product Description 78 3BSE015969 600 A Figure 30 TB820 TB820V2 ModuleBus Modem ...
Страница 88: ...ModuleBus Section 2 Product Description 88 3BSE015969 600 A Figure 37 Module Outlet Module TB845 ...
Страница 89: ...Section 2 Product Description ModuleBus 3BSE015969 600 A 89 Figure 38 ModuleBus Inlet Module TB846 ...
Страница 93: ...Figure 40 Power Supply Module SD831 Section 2 Product Description Power Supplies 3BSE015969 600 A 93 ...
Страница 94: ...Figure 41 Power Supply Module SD832 Power Supplies Section 2 Product Description 94 3BSE015969 600 A ...
Страница 95: ...Figure 42 Power Supply Module SD833 Section 2 Product Description Power Supplies 3BSE015969 600 A 95 ...
Страница 96: ...Figure 43 Power Supply Module SD834 Power Supplies Section 2 Product Description 96 3BSE015969 600 A ...
Страница 97: ...Section 2 Product Description Power Supplies 3BSE015969 600 A 97 Figure 44 Voting Unit SS823 ...
Страница 98: ...Power Supplies Section 2 Product Description 98 3BSE015969 600 A Figure 45 Voting Unit SS832 ...
Страница 172: ...Certifications Section 3 Technical Data and Performance 172 3BSE015969 600 A ...
Страница 174: ...Product and Price List Structure Section 4 Ordering 174 3BSE015969 600 A ...
Страница 178: ...Appendix A Hardware Units for Essential Automation 178 3BSE020924 600 A ...
Страница 182: ...Index 182 3BSE015969 600 A Index 182 3BSE015969 600 A ...
Страница 184: ...Revision History 184 3BSE015969 600 A ...
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