User's Manual

english

Selecting System

Components

The BIS L-6002 processor has a plastic housing.

The BIS L-6022 processor has a metal housing.

Connection is made through round connectors. Two read/write heads can be cable con-

nected.

Series BIS L-60_2 processors have in addition a digital input. The input has various functions

depending on the configuration (see Parametering).

The read/write distances depend on which data carriers are used. Additional information on the

read/write heads in series BIS L-3_ _ including all the possible data carrier/read-write head

combinations can be found in the manuals for the respective read/write heads.

The system components are electrically supplied by the processor. The data carrier represents

a free-standing unit and needs no line-carried power. It receives its energy from the read/write

head. The latter constantly sends out a carrier signal which supplies the code head as soon as

the required distance between the two is reached. The read/write operation takes place during

this phase. Reading and writing may be dynamic or static.

BIS L-60_2 Processor

Basic knowledge for application

L60_2-019_828132_1007-e.p65

english8

BIS L-60_2 Processor

Basic knowledge for application

The processor writes data from the host system to the data carrier or reads data from the data

carrier through the read/write head and prepares it for the host system. Host systems may

include:

– a host computer (e.g. industrial PC) or

– a programmable logic controller (PLC)

For applications requiring high security against bad data, CRC_16 checking can be used.

Here a check code is written to the data carrier which allows the data to be checked for

integrity at any time or location.

Advantages to CRC_16: Very high data integrity, even during the non-active phase (data

carrier outside the active zone of the r/w head)

Disadvantages to CRC_16: Longer read/write times, some user data space is taken up on

the data carrier.

Use of CRC_16 can be parameterized by the user. (see

25)

Control Function

Data checking with

CRC_16