Rockwell-automation MMCL Using the Mining, Mineral, and Cement Library Manuel d'utilisateur télécharger pdf (Page 14)

Publication RA-UM002B-EN-P - November 2010

14 Developing an RSLogix 5000 Application

Program Design and Application Tips

• User Programs can be called by the Continuous or Period Tasks. When

Periodic Tasks are used, certain rules have to be followed because the

MMCL Add-On Instruction Standard Functions are originally designed

for Continuous Tasks.

• Setup the I/O module, or device parameters, immediately after a new

module is installed.

• The System Group Module, SysGrp_AOI, must be called only once in

the application. Its input, ApplyPar, signals all analog modules to read

changed parameters on-line.

• The User Program, ap_Network, is an example that shows how to get

the Network Status from an I/O Module and make it visible to the

HMI.

• The main program, MainRoutine, contains some System Rungs. These

rungs may be extended and/or adapted as required.

• Analyze the desired functions before programming. Outline the Control

and Machine Groups. Specify the calling order and start and stop

sequences of Modules within a Group.

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Rockwell-automation MMCL Using the Mining, Mineral, and Cement Library Manuel d'utilisateur Page 14