User's Manual

Table Of Contents
July 23, 2002 2-3
CreataLink2 XT Hardware Integrator’s Guide General
Product Description
Product Description
The CreataLink2 XT device is a two-way data transceiver that supports the
ReFLEX protocol. The CreataLink2 XT device can initiate transmissions into a
ReFLEX Narrow Band Personal Communications System (NBPCS) network, re
-
ceive and decode data, and store it. It can forward messages it receives from the
ReFLEX network to an interconnected host device via an RS-232 level or Transistor-
Transistor Logic (TTL) level serial port. The CreataLink2 XT device performs all
necessary ReFLEX protocol processing to maintain connection to the ReFLEX
network, accurately receives and acknowledges messages, and delivers messages
in conformance with protocol requirements.
The CreataLink2 XT provides an 8-bit, bi-directional parallel Input/Output (I/O)
port. Each bit can be configured individually as an input or output by the integrator
or end-user. The product also has two Analog-to-Digital (A/D) input ports for
customer use.
An additional pin is provided for a secondary battery source. This secondary source
can be used to back-up RAM contents in the event of a power failure and can be
selected through software to power the transmitter.
The CreataLink2 XT device can support an off-board application configuration (see
Figure 2-1 below). Off-board applications communicate with the CreataLink2 XT
using the Communications Linking Protocol (CLP).
The CreataLink2 XT also supports an on-board application configuration which
enables third parties to write custom resident applications. This usually eliminates
the need for an external application board.
990441
Figure 2-1. Off-board Configuration
990442
Figure 2-2. On-board Configuration
Interface
Board for
protocol
translation
CLP
Data collection
pt -machine,
meter, car, etc.
Discrete signals
CreataLink2 XT
SMA
CLP
APP
I/O, A/D Port
SERIAL
Off-board host control over serial
port interface. Platform acts as
modem. Parallel I/O and A/D port
control via host over serial link.
On-board host operation via 3rd party
application.
Custom Serial
Interface
CreataLink2 XT
SMA
3rd
PARTY
APP
I/O, A/D Port
SERIAL
Data collection
pt -machine,
meter, car, etc.
Discrete signals