Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 144)

Chapter
Commands 10
10 -14
Start
Erase RAM
Is
battery back-up
enabled?
program
Has
PROG1 or PROG2
been executed?
Is
battery backed
RAM MTOP and
Print sign-on
message
Enter command
mode
Has
PROG2 been
executed
Is
user EEPROM
checksum correct?
Power turn–on
No
Yes
No
Yes
Erase MTOP and port
information in
battery backed RAM
Copy EEPROM MTOP and
port information to
battery backed RAM
Yes
port information
valid?
Store default MTOP and
port information in
battery backed RAM
No
Yes
Initialize ports using
battery backed RAM
No Print sign-on message
Print checksum error message
Enter command mode
Yes
Execute ROM 1
Is
RAM program
present?
Yes
Execute RAM program
No
No