Publication 1756-UM001A-EN-P - September 2000
C-10
Estimate Memory Use
•
Changing the source and destination data type in the above
examples, increases the instruction’s memory use.
For example:
TagA
DINT
TagC
INT
TagD
SINT
TableC
INT[10]
TableD
SINT[2,4,6]
Example:
Additional Memory Used:
MOV instruction
Source
Destination
TagA
TableC[TagC]
24 bytes for MOV instruction
52 bytes for DINT to INT conversion (TagA into TableC)
60 bytes for INT to DINT conversion (TagC)
84 bytes for DINT tag index (TableC)
220 bytes total
MOV instruction
Source
Destination
TagD
TableC[TagC]
24 bytes for MOV instruction
92 bytes for SINT to INT conversion (TagD into TableC)
60 bytes for INT to DINT conversion (TagC)
84 bytes for DINT tag index (TableC)
260 bytes total
MOV instruction
Source
Destination
TagA
TableD[TagC,0,0}
24 bytes for MOV instruction
52 bytes for DINT to SINT conversion (TagA into TableD)
60 bytes for INT to DINT conversion (TagC)
152 bytes for DINT tag index (TableD)
288 bytes total
MOV instruction
Source
Destination
TagC
TableD[TagC,0,0]
24 bytes for MOV instruction
104 bytes for INT to SINT conversion (TagC into TableC)
60 bytes for INT to DINT conversion (TagC)
152 bytes for DINT tag index (TableD)
340 bytes total
Содержание Allen-Bradley ControlLogix 1756-L Series
Страница 1: ...ControlLogix System 1756 Lx User Manual ...
Страница 10: ...Publication 1756 UM001A EN P September 2000 Table of Contents vi ...
Страница 64: ...Publication 1756 UM001A EN P September 2000 4 16 Communicate with 1756 I O Notes ...
Страница 90: ...Publication 1756 UM001A EN P September 2000 6 16 Communicate with 1794 I O Over a ControlNet Network Notes ...
Страница 108: ...Publication 1756 UM001A EN P September 2000 7 18 Communicate with Another Controller over a ControlNet Network Notes ...
Страница 112: ...Publication 1756 UM001A EN P September 2000 8 4 Route PLC 5 Messages Between ControlNet Networks Notes ...
Страница 119: ...Publication 1756 UM001A EN P September 2000 Communicate with a PanelView Terminal Over a ControlNet Network 9 7 ...
Страница 152: ...Publication 1756 UM001A EN P September 2000 11 4 Monitor Connections Notes ...
Страница 160: ...Publication 1756 UM001A EN P September 2000 12 8 Communicate with a DeviceNet Device Notes ...
Страница 188: ...Publication 1756 UM001A EN P September 2000 14 8 Route PLC 5 or SLC 500 Messages From a DH Network Notes ...
Страница 204: ...Publication 1756 UM001A EN P September 2000 15 16 Communicate Over a Remote I O Network Notes ...
Страница 232: ...Publication 1756 UM001A EN P September 2000 18 18 Configure DF1 Master and Slave Communications Notes ...
Страница 266: ...Publication 1756 UM001A EN P September 2000 21 10 Maintain the Battery Notes ...
Страница 286: ...Publication 1756 UM001A EN P September 2000 B 18 Estimate Execution Time Notes ...
Страница 300: ...Publication 1756 UM001A EN P September 2000 C 14 Estimate Memory Use Notes ...
Страница 305: ......
Страница 307: ...ControlLogix System User Manual ...