EUCHNER FSA Light - Manual (Page 9)

Manual EKS Light and Light FSA
3 Function
3.1 Functional Description
3.1.1 Functions of EKS Light
EKS Light is used on control systems or parts of control systems for access control and monitoring.
Instead of passwords, coded Electronic-Keys are assigned. In this way, unauthorized system access (e.g. to
control and visualization systems) is prevented to the greatest possible extent.
EKS Light uses a non-contact, inductive read identification system.
It consists at least of:
 Electronic-Key
 Electronic-Key adapter EKS Light compact or Electronic-Key adapter FHM with interface adapter EKS Light
modular
For configuration, you will require at least the following items:
 A commercially available Windows ® PC
 EKS Electronic-Key adapter with USB interface or serial interface
 Electronic-Key-Manager EKM Light software
Programming of the application and the integration into an overall system are organized by the user.
EKS Light is characterized by simple integration into the control system environment. After the Electronic-Key is
placed, the Electronic-Key's data are evaluated within the device as the first step, which permits automatic
Electronic-Key recognition without the aid of the control system. Once the internal check of the data integrity is
complete, an access level is issued at the data outputs.
The EKS Light read station is a read-only system with integrated evaluation electronics and interface. The
access level is output via a 4-bit parallel interface. The parallel interface offers the advantage of transparent
depiction of the data and therefore simple connection directly to the inputs of a control system or a switching
device.
An EKS operating state (OS), an access level (AL), an access code (AC), a checksum (CRC) and a serial
number are stored on the Electronic-Key. When an Electronic-Key is inserted, the data range relevant for the
respective operating state is automatically read from the Electronic-Key into the device, temporarily stored there
and evaluated. If a valid Electronic-Key is detected, the outputs on the read station are set to High depending on
the stored values of the access level. All outputs are reset to Low when the Electronic-Key is withdrawn.
The read station and Electronic-Key are separately parameterized with values which have to match. Parameter
assignment to the Electronic-Key adapter is performed exclusively via the DIP switch.
Figure 1: DIP switch setting and access code on the Electronic-Key.
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