STARTUP / TROUBLESHOOTING
5-17
Hardware and Installation User Manual
5.2.5
Troubleshooting the EPROM/EEPROM
From the Status Chart or WORDS display of the programming device, you can
check the values in the status words STW06, STW07, STW08, and STW09 for
problems with the EPROM/EEPROM. You should also check for the following:
The EPROM used in the TI520/TI530 PLCs is not compatible with
the TI525/TI535. A TI520C/TI530C EPROM may be used in a
TI525/TI535, however.
If you transfer an EPROM/EEPROM from one TI525/TI535 model to
another, remember that the program in the EPROM/EEPROM has to
be compatible with the model in which it is used.
If the program that you loaded in RAM fails to copy to the EEPROM,
check the EPROM/EEPROM jumpers to be sure that you have them set
for an EEPROM, not an EPROM.
Refer to Chapter 4 of this manual for instructions on installing and
programming the EPROM/EEPROM.
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