Selecting a CompactLogix controller
There are many factors to consider when selecting a CompactLogix controller due to their module nature and wide range of form factors which are available:
Supported Logix Designer software versions
Cabinet size restrictions
CompactLogix form factors or I/O module scalability
Processing the requirements of your current application and future expansion
Memory requirements of your current application and future expansion
The CompactLogix controllers and their software version compatibilities are shown in the following table:
CompactLogix controllers |
Logix Designer software (RSLogix 5000) | ||
---|---|---|---|
Controller |
Memory |
Minimum version |
Maximum version |
Bulletin 1768 | |||
1768-L43 |
2 MB |
v16 |
v20 |
1768-L45 |
3 MB |
v16 |
v20 |
Bulletin 1769 L23x Packaged controllers with embedded I/O | |||
1769-L23 |
512 KB |
v16 |
v20 |
Bulletin 1769-L3x Modular controllers | |||
1769-L3x |
1.5 MB |
v16 |
v20 |
Bulletin 1769 5370 | |||
5370 1769-L16 |
384 KB |
v20 | |
5370 1769-L18 |
512 KB |
v20 | |
5370 1769-L24 |
750 KB |
v20 | |
5370 1769-L27 |
1 MB |
v20 | |
5370 1769-L30 |
1 MB |
v20 | |
5370 1769-L33 |
2 MB |
v20 | |
5370 1769-L36 |
3 MB |
v20 |
It is also important to consider that some of the CompactLogix 5730 controllers are slated as direct replacements for some of the older CompactLogix controllers (although the older controllers are still available for purchase):
5370 1769-L24 replaces 1769-L23
5370 1769-L3x replaces 1769-L3x