S7300 plc

I've written a program on an S7 300 plc. I just want to know what the bit range is. i.e. how high can I go, m256.7 or can I go higher. It's a 314 (1) cpu. If 256.7 is the max, is there anything I can do to create more bits ( other than upgrading the cpu).
Thanks

Due to the limitation of general data memory I put most of my data into data blocks. You can create stand alone data blocks for this however I have found it useful to use function blocks for major subroutines and associate a data block with it. If you write smaller blocks as multiple instance function blocks you can include their data in the main function block data tables as well.

The address range is always limited. The limitations depend on teh type of CPU you're using. The limits are:

• S7-312: 128 bytes - from M0.0 to M127.7
• S7-300 except S7-312: 256 bytes - from M0.0 to M255.7 ( not M256.7 !!! )
• S7-412/413: 512 bytes - from M0.0 to M511.7
• S7-414: 1024 bytes - from M0.0 to M1023.7
• S7-416: 2048 bytes - from M0.0 to M2047.7

I don't have info yet about the other available CPU's. As you see it's always best to check. If you have the CPU online, you can check the controller properties (performance data) to see what's possible.

DesertDog's suggestion is THE solution if the memory bits are not sufficient for your application.

Kind regards,