Rockwell Automation 1757-SWKIT5000 ProcessLogix R500.1 Installation and Upgrade Guide User Manual
Page 260
Publication 1757-IN500A-EN-P - September 2002
11-20 Performance and Capacity Specifications
Table 11.Q Typical IOM/CM/SCM Processing and Memory Resource Requirements
Typical IOM/CM/SCM Processing and Memory Resource Requirements
Typical Module Types
(FB Content in Parenthesis)
Processing Resource Consumption
(Per Module)
Memory
Resource
Usage
50/5 ms CEE Non-Redundant
(PU/Module Execution)
50 ms CEE Redundant
(PU/Module Execution)
50/5 ms CEE
(MU/Mod)
Typical I/O Module
(Average consumption of available IOMs)
0.3
0.19
0.6
Analog Digital Acquisition Module
(10 AI, 10 DataAcq FBs)
2.9
3.8
7.4
Small Analog Data Acquisition Module
(1 AI, 1 DataAcq FB)
0.47
0.43
1.0
Regulatory Control Module
(1 AI, 1 DataAcq, 1 PID, 1 AO, 6 Logic FBs)
2.8
2.8
3.9
Auxiliary Function Module
(10 Aux. FBs, such as AuxCalc, Totalizer)
4.2
5.1
13.1
Digital Data Acquisition Module
(10 DI, 10 Flag FBs)
1.2
1.2
3.1
Small Digital Data Acquisition Module
(1 DI, 1 Flag FBs)
0.22
0.14
0.6
Device Control Module
(2 DI, 2 DO, 1 DevCtl, 5 Logic FBs)
1.3
1.3
3.1
Logic Control Module
(20 Logic FBs)
1.0
1.0
3.5
Sequence Control Module A
(1)
2.0
3.0
28.9
Sequence Control Module B
(2)
2.0
3.0
35.7
Sequence Control Module with an alias
table of size 45 rows by 100 columns
(3)
2.0
3.0
128.5
Sequence Control Module with an alias
table of size 500 rows by 9 columns
(4)
2.0
3.0
124.5
These Block Libraries will consume the following extra memory when the first block is loaded to the 1757-PLX52
Controller:
• EXCHANGE – 70 MUs
• 1757-PIM – 100 MUs
• 1797-FLEX EX + 1794- FLEX I/O – 125 MUs
• FBUSIF – 90 MUs
(1)
1 each of Main, Hold, Stop and Abort Handlers, 10 Steps with 8 Outputs each, 10 Transitions with 5 Conditions each, 10 Recipe items, 5 History items.
SCM has a total of 10 Steps and 10 Transitions among the 4 Handlers.
(2)
1 Main Handler, no other Handlers, 20 Steps with 4 Outputs each, 20 Transitions with 3 Conditions each, 10 Recipe items, 5 History items. SCM has a
total of 20 Steps and 20 Transitions.
(3)
1 each of Main, Hold, Stop and Abort Handlers, 10 Steps with 8 Outputs each, 10 Transitions with 5 Conditions each interspersed in all handlers, 10
Recipe items, 5 History items. SCM has a total of 10 Steps and 10 Transitions among the 4 Handlers.
(4)
1 each of Main, Hold, Stop and Abort Handlers, 10 Steps with 8 Outputs each, 10 Transitions with 5 Conditions each interspersed in all handlers, 10
Recipe items, 5 History items. SCM has a total of 10 Steps and 10 Transitions among the 4 Handlers.
Total Processing Resources (PU/sec)
Processing Resource Consumption (PU/module execution)
Execution Period (sec/module execution)
=