ABB KRAFT-DC2 CIRCUIT BOARD

Addressing, and IOM Group and Channel Numbering

A single Gateway can handle communications with up to eight IOM’s (I/O Modules) in any combination of available module types. Using a thumb wheel setting on the Gateway, each Gateway is given a unique address on the I/O ControlNet. Each IOM then assumes a unique IOM Group number from 0 through 7 based on its physical position relative to the gateway. The IOM connected to the Gateway is always IOM Group zero, the next IOM is one, and so on up to seven. According to the IOM type selected, each IOM will provide a number of field Inputs or Outputs. Each input/output is identified as an I/O channel. Channel numbers begin at zero and go to the maximum number provided by the particular IOM.

Simple assembly

The ControlNet Gateway is snapped onto the Din rail. The first Terminal Base is then snapped onto the rail and connects to the right side of the Gateway. The user can then interconnect up to (7) more Terminal Bases allowing a maximum of (8) per Gateway. The communication bus is formed as the Gateway and Terminal Base units are connected together. The user can then complete the field wiring and power connections to each Terminal Base unit. Power (module and field) is supplied by external power supplies. · Once the Terminal Base units are in place, the user then snaps the desired I/O module onto the correct base. Each Terminal Base features a mechanical key to ensure the correct I/O module is plugged into the correct base. I/O modules can be quickly removed and inserted without disturbing the field wiring. RIOM-A Modules can be mounted horizontally or vertically. The optional Terminal Base Extender Cable allows for even greater mounting flexibility. The Extender Cable can be installed between any two Terminal

Bases allowing for different mounting configurations to meet the needs of different cabinets.

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