Components and Architecture - Hardware Components
Revision 19 HC900 Process Controller Installation and User Guide 25
06/14
Scanner 2 Port Module (C75 only)
The Scanner 2 Port Module is shown in Figure 15.
The dual ports provide redundancy through the 2 CPUs. Features at
the front of the module include:
1. LED status/diagnostic indicator for scanner functions.
2. I/O port A. Private Ethernet 10Base-T Port. Connects directly to
I/O port on CPU-A (or indirectly through a switch).
3. I/O port B. Private Ethernet 10Base-T Port. Connects directly to
I/O port on CPU-B (or indirectly through a switch).
4. LED status/diagnostic indicators for communications functions
Figure 15 – Scanner 2 Module
Input/Output Modules
I/O module types:
• 16 point high level analog input module: each point is configurable for V or mA. Point-to-point
isolation.
• 4 point isolated analog output module: Supports from 0 to
20mA each.
• 8 or 16 point analog output module: Supports from 0 to
20mA each. Isolated in groups of 4 channels.
• 16 point digital input modules: Contact closure type, DC
voltage and AC voltage types.
• 32 point digital input module: DC voltage.
• 8 point AC or 16 point DC digital output modules (sinking
type).
• 32 point digital output: DC voltage (sourcing type)
• 8 point relay output module: four form C type and four form
A type relays.
• 8 point Universal Analog Input module
• 4 channel Pulse/Frequency/Quadrature I/O module
Figure 16 – I/O Module Terminal Blocks
Each I/O module includes a status indicator for the module. Digital Input and Digital Output modules also
include a status indicator for each channel. Terminal blocks available include the Euro style (Figure 16
left) and the Barrier style (Figure 16 right).
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