Publication 1756-UM001A-EN-P - September 2000
19-6
Configure Dial-Up Communications
Step 4: Send the Message
A.
Enter the following logic:
B.
If your message is to a PLC-5
®
or SLC 500
™
controller
and
it
reads or writes integers (not REALs), use a buffer of INTs in the
message.
•
ControlLogix controllers execute more efficiently and use less
memory when working with 32-bit integers (DINTs). Use the
DINT data type for integers whenever possible.
•
PLC-5 and SLC 500 controllers require 16-bit integers.
•
Use an INT buffer in the message and move the data into or
out of the buffer as required.
Serial_port
[1] contains the status of the modem signals. When bit 3 is on (DCD is high), the
modem is receiving the carrier from the remote modem and communication is established. At this
point, the message is sent to the remote controller.
42387
serial_port[1].3
/
message.EN
EN
DN
ER
Type - Unconfigured
Message Control
message ...
MSG
Where:
Is:
serial_port
array of 19 INTs (INT[19]) that stores the status of the serial
port
message
tag that controls the execution of the message
(MESSAGE data type)
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 ...
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Страница 307: ...ControlLogix System User Manual ...