341
Publication 1763-RM001B-EN-P - April 2007
Chapter
20
Communications Instructions
This chapter contains information about the Message (MSG) and Service
Communications (SVC) communication instructions. This chapter provides
information on:
•
Messaging Overview on page 341
•
SVC - Service Communications on page 344
•
•
The Message Element on page 347
•
Timing Diagram for the MSG Instruction on page 356
•
MSG Instruction Ladder Logic on page 360
•
•
Configuring a Local Message on page 363
•
Local Messaging Examples on page 373
•
•
Configuring a Remote Message on page 391
•
Configuring a Multi-hop Remote Message on EtherNet/IP
Communication Channel on page 394
•
Configuring a MicroLogix 1100 CIP Generic Message via Ethernet
(OS Series B FRN 4 or later) on page 21-62
•
MSG Instruction Error Codes on page 414
•
Special Function with MSG instruction (OS Series B FRN 4 or later)
on page 416
The communication instructions read or write data to another station.
Messaging Overview
The communication architecture is comprised of three primary
components:
•
Ladder Scan
Instruction
Used To:
Page
SVC
Interrupt the program scan to execute the service communications
part of the operating cycle. The scan then resumes at the instruction
following the SVC instruction.
MSG
Transfer data from one device to another.
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive