Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 477)

Quick Reference
Appendix E
E-33
Set Switches 6 and 7
If And Then
Without and EEPROM installed in your processor
Switch 6 is OFF Switch 7 may be either
ON or OFF
With a battery installed and a program stored in RAM memory, your processor
powersĆup in the mode identified by the position of the mode select switch. If
the mode select switch is in the RP position, the processor will powerĆup in
the remote program mode.
Without a battery installed and without a program stored in RAM memory,
your processor powersĆup in the program mode or remote program mode
(depending on the keyswitch position) and a
PROCESSOR MEMORY
INVALID
message appears on the 1770ĆT3 terminal.
Switch 6 is ON Switch 7 may be either
ON or OFF
If the mode select switch is in RP position with valid memory, the processor
powers up in the same mode (run/program, remote test or remote test or
remote program) that it powered down in. If the switch is not in the R/P
position, then the power up mode is determined by the position of the switch
(run or program).
If And Then
With an EEPROM installed in your processor
Switch 6 is OFF Switch 7 may be either
ON or OFF
Contents of the EEPROM memory module area transferred to RAM memory
whether or not RAM memory is valid. If switch 6 is OFF, your processor
powersĆup in the mode selected by the keyswitch.
2
Switch 6 is ON Switch 7 is ON Contents of the EEPROM memory module are not transferred to RAM
memory is RAM memory is valid.
Contents of the EEPROM memory module are transferred to RAM memory if
RAM memory is not valid.
1
2
Switch 6 is ON Switch 7 is OFF With a battery installed and a program stored in RAM memory, your processor
powersĆup in the mode identified by the position of the mode select switch.
Contents of the EEPROM memory module are not transferred to RAM
memory. Without a battery installed and without a program stored in RAM
memory, your processor powersĆup in the program mode and a
PROCESSOR
MEMORY INVALID
message appears on the 1770ĆT3 terminal.
1
If the mode select switch is in the RP position, then the processor powersĆup in the last programmed mode or operation,
i.e. Run/Program, Remote Test, Remote Program.
1
2
If the mode select switch is in the RP position, then the processor powersĆup running (RUN/PROG mode). We recommend
that you put the mode select switch in the PROG position so that the processor will powerĆup in the program mode.