Rockwell Automation 1756-CFM ControlLogix Configurable Flowmeter Module - Manual (Page 34)

34 Rockwell Automation Publication 1756-UM010B-EN-P - December 2011
34 Configurable Flowmeter Module Features and Operational Modes
Module Status Information
The ControlLogix CFM module has status indicators on the front of the
module that allow you to check the module health and operational status.
The following status can be checked with the LED indicators:
 Input point status - display indicates a particular points status,
including specific indicators for the input F and Z points for each
channel
 Output point status - display indicates the status of two output points
on the module
For an example of the status indicators, see page 115 .
Configurable Flowmetering Channels
The CFM module offers two configurable Flowmetering channels. Each
channel uses two Flowmeter inputs (F0 & F1) and two corresponding gate
inputs (Z0 & Z1).
Flowmeter Inputs
Two Flowmeter inputs (F0 & F1) are available on your CFM module. The
inputs are capable of receiving the following input signals:
 +/- 30V peak from passive Magnetic Pickups
 5V DC logic (TTL compatible)
 12-24V DC powered preamp outputs
Gate Inputs
The CFM module offers two gate inputs (Z0 & Z1). You can wire the inputs
for single-ended or differential applications and can accept signals at 5V DC or
12-24V DC.
IMPORTANT
The Z0 and Z1 inputs can have different voltages
connected to them simultaneously.