Rockwell Automation 1771-CFM,D17716.5.99 CONFIGURABLE FLOWMET - Manual (Page 11)

Chapter
1
Publication 1771Ć6.5.99 - December 1995
Overview of the CFM Module
Read this chapter to familiarize yourself with the CFM module.
For information on See page
How You Use the CFM Module . . . . . . . . . . . . . . . . . . . . . . . 1-1
What's Next . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2
What the CFM Module Does . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Typical Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Input Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Selecting the Mode(s) of Operation . . . . . . . . . . . . . . . . . 1-5
Using a Prover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Storing Current Count Values . . . . . . . . . . . . . . . . . . . . . 1-6
Output Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Implementing Application Features . . . . . . . . . . . . . . . . . 1-8
The CFM module is designed to operate in one of three ways:
Important: If you use the CFM module as a replacement for a QRC or QRD module,
the CFM module operates like a QRC or QRD module. You do not use
any of the CFM module's features; therefore, you cannot configure outputs
to any of the four input channels.
as a replacement for a QRC module
Set the module operation jumper in
the QRC position.
2
Wire inputs to the new swing arm
(1771ĆWN).
Replace the QRC module with the
CFM module.
Continue to program BTRs as before
(no changes to ladder logic).
as a replacement for a QRD module as a CFM module
3 1
Set the module operation jumper in
the QRD position.
Wire inputs to the new swing arm
(1771ĆWN).
Replace the QRD module with the
CFM module.
Continue to program BTWs and BTRs
as before (no changes to ladder logic).
Make sure the module operation
jumper is set in the CFM position.
Edit your ladder logic to contain
BTW and BTR instructions for the
CFM module.
Wire input and outputs to swing arm
(1771ĆWN).
Install the CFM module.
Edit CFM module's BTW configuration
block and send configuration BTW to
the CFM module.
What This Chapter
Contains
How You Use the
CFM Module