D3 Library and SDK
At the heart of the
flexibility of C_wiz is the D3 (data device driver)
What is a D3
Current D3 Library
All D3s listed below are
included with the Evaluation Edition
As D3s are not
particularly hard to write, our intention is to provide
any D3s developed in the future by ForTotalRecall free
of charge. This statement of intent obviously can not
cover any D3s written by third parties.
All D3s have inbuilt
diagnostics tools, a 60 second trace capability and
fully utilize the C_wiz Test Drive facility to provide
context sensitive online documentation.
if you think we don't have your requirement covered.
The COM On-Off D3 monitors
a COM port for changes in the state of On-Off devices
connected to the COM port.
Every 10 seconds, or when
the state of one of these devices changes, the state of
all devices on the COM port are sent to C_wiz.
An On-Off device is a
simple switch across the two pins of a COM port that
form an On-Off sensor. When the switch closes the On-Off
sensor is on.
The TIA/EIA-232 standard
defines several pins which can be used for various forms
of “hardware handshaking” during data transmission.
These techniques are typically used by modems and
similar devices to prevent message buffer overflows and
These pins are used by the
COM On-Off D3 to provide two separate On-Off sensors to
which On-Off devices can be connected.
If the COM port is a 9 pin
male Sub-D plug then:
The CTS On-Off sensor uses
pins 7 and 8 (RTS/CTS - Request To Send/Clear To Send).
The DSR On-Off sensor uses
pins 4 and 6 (DTR/DSR - Data Terminal Ready/Data Set
COM Patch Panel
Frame Grabber (S2255)
Software Development Kit (SDK)