External storage of user data?

[skj1402]

Is it possible to use an external storage device (eeprom or hard disk) to store user data that then could be readily retrieved back into a control program that would reside within the PLC, if and when the power is removed from the PLC?
If so, what devices would be recommended, and how would these be connected and controlled? i.e. what protocols would be used?javascript:replaceText(' ')
Huh

[support]

There are already built-in 1700 words of EEPROM memory in the M-series PLC which can be used to store the user's data using the SAVE_EEP or SAVE_EEP$ command. Upon power on you can use the LOAD_EEP command to load the data back into the PLC.

If you purchase the optional M2018P module, you can have access to 7700 words of EEPROM data memory and 8190 words of program memory.

One other way is to connect the PLC to the PC using RS232 port and run the TLServer. You can then use the PRINT #1 <WRITE filename> to open a file on the PC and save the data to the PC. The data can be read back into the PLC using the <READ filename> command.