ProSoft Technology MVI69-S3964R - Manual (Page 31)

Ladder Logic MVI69-S3964R ♦ CompactLogix or MicroLogix Platform
Siemens 3964R Protocol
ProSoft Technology, Inc. Page 31 of 80
October 31, 2008
3 Ladder Logic
In This Chapter
™ Introduction............................................................................................ 31
™ Module Data Object............................................................................... 33
™ Commands ............................................................................................ 36
™ Adding the Module to an Existing CompactLogix Project ...................... 37
™ Adding the Module to an Existing MicroLogix Project............................ 40
Ladder logic is required for application of the MVI69-S3964R module. Tasks that
must be handled by the ladder logic are module data transfer, special block
handling and status data receipt. Additionally, a power-up handler may be
needed to handle the initialization of the module's data and to clear any
processor fault conditions.
The sample ladder logic, on the ProSoft Solutions CD-ROM, is extensively
commented, to provide information on the purpose and function of each rung. For
most applications, the sample ladder will work without modification.
3.1 Introduction
The example programs mentioned in the following paragraphs illustrate the
principle of how to communicate between an MVI69-S3964R and a
CompactLogix or MicroLogix processor. All programs mentioned were tested with
appropriate communication partners.
It is up to the programmer to examine the programs in detail and integrate them
into the CompactLogix or MicroLogix processor application.
The following setups/limitations are to be observed in the example
programs:
Changes according to the requirements of your CompactLogix or MicroLogix
system are recommended for setups only. Limitations must not be changed.
ƒ Setup: The MVI69-S3964R resides in slot 1 of the CompactLogix chassis.
ƒ Setup: The 1769-L series controller resides in slot 0 of the CompactLogix
chassis.
ATTENTION: You must be trained in programming and operating Rockwell
Automation 1769-L series controllers and CompactLogix or MicroLogix
environment. Otherwise, incorrect use may lead to personal injury or death,
property damages or economic loss.