The CIOM-A family provides a large selection of I/O modules and field level network gateways in a compact chassis-based design. It provides a flexible and robust solution where module redundancy is not an essential requirement.

The CIOM-A family comes with the following features:
Large selection of traditional I/O module types
Comprehensive coverage for field networks and smart device protocols (HART, FOUNDATION fieldbus, ProfiBus, DeviceNet)
Comprehensive set of chassis types (4, 7, 10, 13, and 17 module slot types)
Modules are powered through an integrated power supply (optionally redundant) 
I/O communicates over hi-speed ControlNet (optionally redundant) using a deterministic publish/subscribe methodology.
CIOM-A modules can be placed local or remote to the control processor. Field wiring can be landed on a removable terminal block that mounts at the front of the module or through factory wired remote terminal assemblies.

The following table provides a listing of the specification documents associated with the various I/O families and solutions.
These documents provide details, capacities, implementation rules and specifications.
See Specification   Description
EP03-300-rrr CEE-based Experion Controllers and Network Capacities and Specifications
EP03-400-rrr CIOM-A (Chassis Series-A I/O and platform)
EP03-410-rrr RIOM-A (Rail I/O Series-A I/O)
EP03-420-rrr RIOM-H (Rail I/O Series-H I/O) (GI/IS)
EP03-430-rrr PMIO
EP03-490-rrr Series C I/O
EP03-440-rrr DeviceNet Integration
EP03-450-rrr ProfiBus Integration
EP03-460-rrr HART Integration
EP03-470-rrr FOUNDATION Fieldbus Integration
EP03-480-rrr Field Device Manager (FDM)
EP03-610-rrr Honeywell OneWireless
EP03-200-rrr Experion Server
Note-1: rrr in the specification document number is the Experion release number. Example, 301 would indicate a specification
document that covers functionality for Experion R301