User's Manual

GAT Access 6100, GAT Access 6100 F BIO, GAT Access 6100 F Enrollment Station, GAT TimeAxx 6150
Communication
www.gantner.com HB_GAT-ACCESS6100--EN_12 65
6. COMMUNICATION
During operation and for configuration the GAT Access 6100 communicates with a server/host computer. For this
communication, the terminal uses certain protocols that are described in separate manuals. For regular use of the
GAT Access 6100 devices, it is not necessary to know the details of these protocols because the software package
GAT DIRECT.Connect from GANTNER Electronic GmbH offer a comfortable way for operation and configuration of
the GAT Access 6100 terminals. Please refer to the documentation of GAT DIRECT.Connect for implementation
details of the GANTNER devices.
Note: The GAT Access 6100 F Enrollment Station does also work offline without network connection. This chapter
describes the communication of the GAT Access 6100 and GAT Access 6100 F BIO terminals.
6.1 Online Mode
This is the standard operation mode of the GAT Access 6100. Online mode means that when a data carrier is read,
the GAT Access 6100 automatically sends the information of the data carrier over the interface to the server/host
and waits for an appropriate reaction from the server/host. The server evaluates the data and sends commands and
data to the GAT Access 6100 to control the function and set the data to be displayed.
Master and Slave:
In Online mode the GAT Access 6100 is in Master mode and the server/host computer is in Slave mode. The host is
queried cyclically by the GAT Access 6100 as to whether it wishes to transfer to the Master mode (for example in
order to carry out a configuration of the GAT Access 6100 or to upload events). If the host changes to Master mode
the GAT Access 6100 changes into the Slave mode. If during this mode no command has been received from the
host after a certain time, the GAT Access 6100 automatically changes back to the Master mode.
If the host does not respond to the queries of the GAT Access 6100 the access terminal changes, depending on
configuration, either into the Out Of Operation mode or into the Emergency mode.
6.2 Emergency Mode
Emergency Mode can be enabled or disabled in the functionality settings of a GAT Access 6100 (see "4.3.3. List of
Configuration Settings").
If Emergency Mode is enabled and if the communication to the server/host is lost, the GAT Access 6100 will switch
into Emergency mode. In this mode the terminal only checks the site key of a data carrier (company identification
number of FID) and if this is the same as the site key of the GAT Access 6100, access will be granted.
If the Locker Check-In function is activated, the GAT Access 6100 will also perform the locker Check-In by writing or
deleting certain data on the data carriers.
A GAT Access 6100 F Enrollment Station is usually operated in the Offline Emergency mode (see chapter “5.5.
User Operation at a GAT Access 6100 F Enrollment Station”).
As soon as communication is active again the GAT Access 6100 will switch back into normal Online mode.
6.3 Out of Operation Mode
If, after an identification at a GAT Access 6100, the host computer does not respond within a certain time after the
GAT Access 6100 read and sent the data carrier information, the access terminal will switch to the Out Of Operation
mode. In this mode, the GAT Access 6100 does not respond to any user action until the communication is restored.