Duemmegi Contatto ModKB Manual

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ModKB: Module for PIN code access control
ModKB module has been specially developed for the con-
nection to third-party numerical keypads using WIEGAND
standard protocol.
ModKB module interfaces, through MCP XT controller, to
the well tested Contatto world, thus integrating it with an
easy to use PIN code based access control system. The
main features are the following:
2 generic Contatto inputs
•
1 relay output for electrical door lock control
•
2 LED outputs for OK and NOK codes
•
WIEGAND 32 or 26 protocol (SITE code and PIN)
•
programmable pulse duration on door lock relay
•
"SITE code" management for keypad identification
•
PIN code management
•
up to 30 different PIN codes can be defined and stored
•
for each PIN it is possible to define the days of the
•
week during which the access is granted
for each PIN it is possible to define up to 2 time slots
•
during which the access is granted (provided that the
access occurs during one of the allowed days)
the module takes 1 input address reporting on the bus
•
the entered PIN code, the status of the generic inputs
and other information for diagnostic
the module takes 1 optional output address allowing to
•
separately lock each one of the 30 PIN codes and to
drive the relay
ModKB module features a 12-way removable terminal
block for the connection to the keypad (not provided), to the
generic inputs and to the LEDs reporting the granted or
denied access information. The normally opened contact of
the internal relay of ModKB is available on a separated 2-
way removable terminal block, allowing the connection to
the electrical door lock or similar devices.
An additional 5-way removable terminal block allows the
connection to the Contatto bus.
ModKB module housing is a reduced-height 3 modules box
for DIN rail mounting.

Operation

ModKB module allows the access control through the en-
tering by the user, on a keypad, of one of the 30 codes pre-
viously stored in the module.
ModKB is compatible with keypads having serial WIE-
GAND protocol; the data transmitted by the keypad is
made by the SITE code (identifying the keypad) and the
PIN code. The SITE code is a 16-bit number for WIEGAND
32 and it is a 8-bit number for WIEGAND 26; in both cases
the PIN code is a 16-bit number.
The SITE code must be set in the keypad during the setting
up of the plant using the procedure defined by the manu-
facturer of the keypad.
Since the PIN code is a 16-bit number, then it will be in the
range 00001 e 65535.
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The module can be set to recognize up to 30 different PIN
codes, for instance each one related to different categories
of personnel; if the entered code corresponds to one of the
stored 30 ones, ModKB will check if the access has been
required in a allowed day and in an allowed time slot. The
time slots that can be set for each PIN code are two and,
once set, they are valid for each allowed day of the week.
All evaluations for deciding if the entered PIN code is valid
will be fully executed by ModKB module; the control of the
electrical door lock (or similar devices) will be also automat-
ically performed by the module itself.
In this way, the Contatto MCP XT controller does not need
any specific programming, thus drastically reducing the
times needed for the development and the setting up of the
access control system. In this way, therefore, the operation
of the access control system is guaranteed also in case of
temporary failure of the bus.
It is however possible to set ModKB module in order to it
does not take autonomous decisions, thus leaving the
management of the access to MCP XT controller or to the
supervisor of the system; in this case ModKB module will
be limited to transmit on the bus the entered OIN code.

Address programming

ModKB module takes one 4-channel / 16-bit input address ;
as option, one 1-channel / 16-bit output address can be ac-
tivated in order to executed some commands as will be de-
scribed in the following.
The input and output addresses are equal each one to the
other, so only a base address is needed; this one must be
assigned by FXPRO programmer.

Digital inputs

ModKB module features 2 Contatto generic digital inputs,
which can be therefore used for the connection to potential-
free contacts supplied by the module itself.
These two inputs can be separately configured both for NO
and NC logic during the setting up.
Rel.: 1.1 July 2012
Contatto
ModKB
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