Spectrum Controls 1756sc-CTR8 - Manual (Page 12)

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ControlLogix ™ Counter Module
Input Types
The 1756-CTR supports both AC and DC input signal types. The module
input type is configured on a channel pair basis. Each pair must be
configured for the same input type.
Hardware Features
The module fits into any single slot for I/O modules in a ControlLogix
modular system. The module has a unique generic profile which may be
configured using your RSLogix 5000 programming software.
The module utilizes one removable terminal block, that provides
connections for the eight input channels. The module is configured
through RSLogix 5000 software, defining input type, counter control and
signal filtering.
Table 1.1 Hardware Features
Hardware Function
OK LED Displays communication and fault status of the module
SYS LED Displays a fault condition
Side Label (Nameplate) Provides module information
Removable Terminal Block Provides electrical connection to input devices
Door Label Permits easy terminal identification
Self Locking Tabs Secure module in chassis slot
Terminal Block Switch Locks the RTB to the module.
Diagnostic LEDs
The module contains diagnostic LEDs that help you identify the source of
problems that may occur during power-up or during normal operation.
Power-up and diagnostics are explained in Chapter 7, Testing Your
Module.
System Overview
The module communicates with the ControlLogix processor and receives
+5 Vdc and +24 Vdc power from the system power supply through the
parallel backplane interface. You may install as many counter modules in
the system as the power supply can support.
Channels (0 through 7) can receive AC or DC input signals. Input types
must be configured in channel pairs. Each channel reports both count data
and rate data in independent registers. Extended status information is also
available for each channel.