Delta Tau Turbo PMAC PCI-Lite, Справочник по аппаратуре

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Turbo PMAC PCI Lite
20 Software Setup
SOFTWARE SETUP
Communications
Delta Tau provides communication tools that take advantage of the PCI bus Plug and Play feature of 32-
bits Windows
®
based computers. With Pewin 32 Pro, a Turbo PMAC PCI Lite board plugged in a PCI
bus slot will be recognized by the operating system when the computer is boot up. The available PCI
address, dual-ported RAM address and interrupt lines are set automatically by the operating system and
can be checked (but not modified) in the resources page of the device manager.
Turbo PMAC I-Variables
Turbo PMAC has a large set of Initialization parameters (I-variables) that determine the personality of the
card for a specific application. Many of these are used to configure a motor properly. Once set up, these
variables may be stored in non-volatile flash memory (using the
SAVE
command) so the card is always
configured properly (PMAC loads the flash I-variable values into RAM on power-up).
The easiest way to program, setup and troubleshoot Turbo PMAC is by using the PMAC Executive
Program Pewin 32 Pro and its related add-on packages Turbo Setup and PMAC Plot. These software
packages are available from Delta Tau, ordered through the appropriate software accessory.
The programming features and configuration variables for the Turbo PMAC are fully described
in the Turbo PMAC User and Software manuals.
Operational Frequency and Baud Rate Setup
Variable I52 determines the actual operating frequency of the Turbo CPU. The operational frequency is
set to 10MHz * (I52 + 1). I52 should be set to 7 to operate an Option 5Cx board at its maximum rated
frequency of 80 MHz; it should be set to 9 to operate an Option 5Dx board at its maximum rated
frequency of 100 MHz; it should be set to 15 to operate an Option 5Ex board at is maximum rated
frequency of 160 MHz.
I52 is used only at power-up/reset. To change the operational frequency, set a new value of I52, issue a
SAVE
command to store this value in non-volatile flash memory, then issue a
$$$
command to reset the
controller. I54 controls the baud rate for communications on the main serial port. Turbo PMAC uses I54
only at power-up/reset to set up the frequency of the clocking circuit for the serial port. To change the
baud rate, it is necessary to change the value of I54, store this value to non-volatile flash memory with the
SAVE
command, and reset the card. At this time, Turbo PMAC will establish the new baud rate.
The possible settings of I54 and the baud rates they define are:
I54 Baud Rate I54 Baud Rate
0 600 8 9600
1 900 9 14,400
2 1200 10 19,200
3 1800 11 28,800
4 2400 12 38,400
5 3600 13 57,600
6 4800 14 76,800
7 7200 15 115,200