ProSoft Technology MVI56-AFC - Manual (Page 210)

MVI56-AFC Sample Logic MVI56-AFC ♦ ControlLogix Platform
User Manual Liquid and Gas Flow Computer
Page 210 of 316 ProSoft Technology, Inc.
February 25, 2011
12.1.4 Sample MVI56-AFC Logic Tasks
The sample ladder performs several important tasks for the MVI56-AFC
operation. For most of the applications, you should not have to perform any
modifications to the sample ladder logic.
The sample ladder logic performs the following tasks:
1 Transfer the process variables from the processor to the MVI56-AFC for all
16 meters.
2 Transfer the calculation results from the MVI56-AFC to the processor for all
16 meters.
3 Write the Wallclock from the processor to the MVI56-AFC
4 Enable all 16 meters
5 Disable all 16 meters
6 Displays the current enable/disable status of all 16 meters
7 Transfer the molar analysis data (gas only) for each meter
8 Reset all 4 Resettable Accumulators for each meter
9 Write a Daily or Hourly Archive
10 Select a meter stream
11 Read each meter profile (meter type, product group and selected stream)
12 Transfer up to 2000 words of data between the processor and the Primary or
Virtual Modbus Slaves.
13 Set the processor date and time information using a controller tag as source
14 Read the meter alarms
15 Read the site status
16 Request Modbus master commands to remote connected Modbus slaves
17 Read Modbus pass-through messages from the module