l
(
r
r
(
5.2.3 Serial Interface Operation
5.2.3.1 User Terminal Requirements
Start-Up
and
Adjustments
The BRU-Series serial interface is factory configured for RS-232 compatibility, but RS-422 operation is
possible by making jumper changes. Refer
to
Figure 5-2
for
jumper locations and configurations. The
BRU-Series serial interface is designed
to
work with the Tandy 1 02 computer, but should interface to
VT
-52
compatible terminals with at
ieast
·an ·eight ·line
40
character display. The terminal should be set for full
duplex, 8 bit words,
no
parity, 1 stop bit, with
XON
/ XOFF (software handshake) enabled. Refer
to
drawing
9101-0136 for serial interface connection details. Appendix A is a step-by-step guide on
how
to
set up the
Tandy 102 for operation with the BRU-Series drive. Appendix B contains the communication codes sent
to
and received from the BRU-Series drive and the user terminal. Appendix C
is
a step-by-step guide on
using an IBM PC terminal and Appendix
0 covers common communication problems and possible cures.
The default baud rate is stored in the
PM
(personality module) and is set
by
the factory
to
9600 baud. An
autobaud function has been included in the BAU-Series drive
to
allow terminals with 1200, 2400,
4800,
9600,
or
19200 baud
to
communicate by over-riding the default value. The autobaud function, however,
only works during the first second after power
is
applied, after which the baud rate
is
set
to
the default
value as stored
in
the
PM.
To use the autobaud function, after power is applied and the red LEOs on the
drive module
tum
on, press <Enter> immediately. The Help page should then be displayed on the user
terminal
as
shown
in
Figure
5-3
. The default baud rate may be changed
to
the baud rate calculated during
the autobaud function
by
turning
to
the status page by pressing <ESC> and then pressing
<S>
to
save
parameters (refer to Section
5.2
.3.2.
3).
5.2.3.2 Operating the User Terminal
The BRU-Series drive communicates information
to
the user through 3 pages. The Help Page provides
useful information
to
get the first time user started and shows software release and personality module
information. The Status Page indicates the status of the BRU-Series drive, and the Setup Page allows the
user
to
change the tuning parameters for optimal performance. There are four modes
of
operation:
velocity, torque, tune and auto-tune mode. Each of these modes has a Status and Setup page.
5.2.3.2.1 Help Page
If the user terminal
is
plugged into
OM
connector P6 when power is applied
to
the BRU-Series drive, a help
message will appear on the terminal screen when power
up
diagnostics and autobaud have been
completed (see Figure
5.3)
. The Help page shows the software part number
(91
01- 095-XXX, where
XXX
refers
to
the software release number), the personality module identification, and a brief description of
how
to
use the termina
l.
If the power
up
diagnostic tests fail, the BRU-Series drive automatically turns
to
the
STATUS
page which d isplays a description
of
the error (refer
to
Section 5.2.3.2.2).
From the Help page, you can press the <ESC> key
to
enter the Status page
or
press the < P > key
to
tum
to the Setup page. After pressing the <ESC>
or
< P > key
to
tum
to
the Status or Setup page, you will not
be able
to
return
to
the Help Page except by resetting the
BRU
-Series drive through the external reset
or
by
cycling power.
BRU-200/ BRU-500 Brushless Drives Instructi
on
Manual
27
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