MicroLogix 1200 Memory Module

Trying to download my first program to my first PLC job. Stupid question, is it required to have a memory / real time clock module installed to download your program to the PLC? I get a message "DiagnosticStatus failed Ox4" and no LED's but power "on".

Strech

the memory module is probably not your problem ...

first question: can you "see" the processor in RSLinx before trying to download?

I can now

Yes, went back through it and can see it. Got the program downloaded. Thanks