Intelligent output module for use in control cabinets

April 2000 Enclosures, Cabling & Connectors

IFM Electronic now offers its intelligent SmartLogic module from the SmartLine series. These new input/output modules for the AS-Interface integrate an internal microprocessor which allows fast data pre-processing, irrespective of the bus cycle.

The SmartLogic module is suitable for rail mounting in the usual control cabinets or for local connection boxes. The module contains an AS-Interface slave with four digital inputs and four outputs within a space that is only 50 mm wide. An analog output and four fast inputs for the connection of incremental encoders are available. Addressing is done via the addressing socket on the front of the module and can be done in the control cabinet before mounting and after wiring.

All binary peripheral signals are indicated via light domes in the front display. The supply voltage and the sensors or actuators are connected via three-row Combicon connections at the top and bottom which can be individually fitted with screw terminals, cage clamps or isolation displacement terminals. Since all connections are of the plug-in type, the modules can be replaced without using a special tool.

SmartLogic's internal microprocessor has an 8 KB program memory which can be programmed by the user in the same way as a PLC.

The programming language (to IEC 61131-3) supports the common languages such as LD, FBD, IL and structured text. Up to eight inputs can be linked with four outputs. For program download and debugging, a serial RS232C interface is available. Data from the ASi master can be processed directly for peripheral equipment or via a logical program function. This, for example, allows a fast processing of encoder signals irrespective of the ASi bus cycle. In order to do so, SmartLogic uses integrated hardware counters with an input frequency of 200 kHz.

Typical SmartLogic applications include position control, cam sequencers, logical modules, timers and storage elements. An additional feature is the freely programmable serial interface for the connection of external peripheral equipment such as bar code scanners, frequency converters or HMIs.

SmartLogic can also be used as a decentralised logical module that can also be operated without ASi. Subsequent networking of several modules is possible at any time.

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