Siemens SIMATIC TI525 Hardware And Installation Manual page 77

D Be sure that all I/O interface cables are properly connected to I/O
D All the configured bases are properly connected, there are no crimps
D The cable to the programming unit (where applicable) is secure.
D PLC battery polarity is correct.
3. Initialize PLC.
For TI535 models —
For TI525 models —
4. If
EPROM/EEPROM according to the instructions given in Chapter 4.
5. Connect the programming device to the RS-232-C/RS-423 port of the
PLC. Place the PLC in PROGRAM mode. If you have installed a
pre-programmed EPROM/EEPROM, go to step 8.
Hardware and Installation User Manual
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STARTUP / TROUBLESHOOTING
interface connectors.
or breaks in the cable, and base addresses are correct.
If you have not already done so, disable the PLC battery by turning
off switch 1 on DIP 2. Make certain that a programmed
EPROM/EEPROM is not installed.
Turn on power to the PLC.
With the battery disabled and no programmed EPROM/EEPROM
installed, the TI535 clears memory and enters PROGRAM mode.
Enable the battery by turning on DIP 2, switch 1. The Battery Good
LED should light. The TI535 is now initialized.
Turn on power to the PLC. The TI525 is initialized during
power-up.
you intend to use
The PLC should be in PROGRAM mode at this
point, not in RUN mode. Instructions that you enter
in the RLL program are executed immediately if the
PLC is in RUN mode.
5-2
an EPROM/EEPROM,
NOTE
install the