Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8 Instrukcja Użytkownika Pobierz pdf (Strona 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 back

Ćup and presence of 115 V

AC 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.

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