Rockwell Automation 57C620 AutoMax Programming Executive Version 3.8 - Manual (Page 152)

10Ć4 AutoMax Programming Executive Version 3.x
10.6 Processor Module Serial Ports
There are two RSĆ232 serial ports on the front of each Processor
module. They are accessed through DBĆ25 connectors on the
faceplate. The upper port, labeled PROGRAMMER/PORT B", is
reserved for connection to the personal computer only. When there
are multiple Processor modules in a rack, only the leftmost
PROGRAMMER/PORT B" slot is reserved. All remaining ports on all
Processor modules in the rack can be used by application tasks
running on the respective Processor modules.
The user ports are accessed using the OPEN statement (OPEN
PORTA" or OPEN PORTB") in BASIC tasks. Refer to JĆ3675 for
more information on the OPEN statement. Refer to Appendix A for a
description of the pins on user ports. Unless otherwise programmed
by an application task, the default characteristics of the user ports
are:
9600 baud
8 bit characters
1 stop bit
no parity
echo on
Xon/Xoff handshake enabled
ignore modem control
not hardcopy device
10.7 Status Indicators
The Processor module has four status indicators on the faceplate: a
green LED labeled OK", an indicator light labeled BAT. OK" for the
onĆboard battery backĆup and presence of 115 VAC power, and two
sevenĆsegment LEDs used to display status and error codes. See
10.4 for more information on the onĆboard battery backĆup.
The OK" indicator is controlled by the local hardware watchdog
timer on the Processor. It is on when the timer has been reset within
the timer interval and the Processor module is operating normally.
See 10.5 for more information about the watchdog timer.
See 10.10Ć10.12 for more information on status and error codes that
may be displayed on the sevenĆsegment LEDs.
10.8 PowerĆUp Initialization
Whenever power is cycled, each Processor and UDC module
performs diagnostics to detect any malfunctions on the module. In a
rack with multiple Processors, the leftmost Processor will perform
diagnostics on the Common Memory module.
While the diagnostics are being performed, various status codes are
displayed on the Processor, indicating the particular diagnostic in
progress. Most of these codes are displayed so briefly that they are
not actually visible. Should a failure be detected on a Processor or
Common Memory module, the Processor will be shut down and the
OK" indicator turned off. The status code indicating which
diagnostic failed will remain on the Processor's display. See
Appendix B for a list of status and error codes. A failure on a UDC
module will cause the OK" indicator to be turned off.