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Publication 1756-UM001A-EN-P - September 2000
15-12
Communicate Over a Remote I/O Network
Step 6: Create Aliases
In this step, you convert tags in your programs to aliases for I/O
points (devices). As an alias for an I/O point, each tag:
•
provides a descriptive name for the device that is wired to the
point
•
represents the value of the point. When one changes, the other
reflects the change.
A.
From the
Logic
menu, select
Edit Tags
.
EXAMPLE
Create aliases
The following logic was initially programmed using descriptive tag names, such as
start
and
motor
. Later, the tags were converted to aliases for the corresponding I/O devices.
start is an alias for the push button that is wired to point 1 of group
0 in the chassis named
conveyor. When the push button is on, start
is on.
motor is an alias for the starter contactor that is wired to point 0 of
group 0 in the chassis named
conveyor. When motor turns on, the
starter contactor turns on.
motor
<conveyor:O.Data[0].0>
motor
<conveyor:O.Data[0].0>
start
<conveyor:I.Data[0].1>
stop
<conveyor:I.Data[0].0>
42435
B.
C.
42421
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 ...