3980xpi Users Manual - Data I/O Corporation

B Computer Remote Control
System Setup
The programmer can be controlled via a host computer using Computer
Remote Control (CRC) protocol. CRC commands have been designed to be
incorporated into a remote computer software program (driver) that will allow
an operator to control the programmer. The driver generates commands and
sends them to the programmer, which executes the commands. The
programmer then returns a response character, and in some cases, data. The
driver reacts to the response and uses it to generate messages and prompts
for the user.
Note: You do not need to use CRC if you are using TaskLink or are
accessing the programmer's built-in menu system (using HiTerm or
a similar product to communicate with the programmer). CRC
commands offer you an alternative, allowing you to create your own
custom interface with the programmer.
This chapter is not intended to be a complete guide to using CRC commands.
For a more detailed explanation of CRC commands, refer to the “UniSystem
Computer Remote Control” Application Note (983-0490) available from
Customer Support.
This chapter contains the following information:
� System Setup — Explains how to set up the programmer for remote
control operation. Includes information on entering and exiting CRC mode.
� CRC Summary — Lists the available CRC commands.
If you are using CRC commands, you must use a driver program to send the
CRC commands and receive the programmer's responses. You can either write
your own software driver or use an already created driver (such as the
terminal.exe program included with Windows).
The programmer receives CRC commands and sends responses to the host
computer through an RS-232C port using a 25-pin D connector in two possible
configurations: either DTE or DCE. Only the Remote port supports CRC
operation.
The pin designations for the Remote port are shown on page 2-9. Included in
that section is a table of pin definitions that describes the function of each pin
for the two serial port configurations.
To ensure correct operation of the Remote port with the host computer, set the
parameters for the Remote port according to the host computer requirements.
3980xpi/3980/3900/2900 User Manual B-1