| File Type | Default File Number | Typical Use | |-----------|---------------------|--------------| | Outputs | O0 | Physical output addresses (O:0/0) | | Inputs | I1 | Physical input addresses (I:0/0) | | Status | S2 | System bits (first scan, clock bits) | | Binary | B3 | Internal logic bits | | Timer | T4 | On‑delay (TON), off‑delay (TOF), retentive (RTO) | | Counter | C5 | Count‑up (CTU), count‑down (CTD), reset (RES) | | Control | R6 | For sequencers (SQL, SQO) and bit shifts | | Integer | N7 | Numeric values (0‑32767 or -32768 to 32767) | | Float | F8 | Floating point (MicroLogix 1100/1400, SLC 5/05) |
Unlike its successor, Studio 5000 (which uses a tag-based system), RSLogix 500 uses . This means every input, output, and internal bit is tied to a specific memory location, such as B3:0/1 or N7:0 . Supported Hardware MicroLogix Family: 1000, 1100, 1200, 1400, and 1500. SLC 500 Family: SLC 5/01 through SLC 5/05. Core Components of the RSLogix 500 Interface plc rslogix 500
If you open RSLogix 500 and look for tags (like in ControlLogix), you won't find them. You will find (N7, B3, T4, C5)—an older, file-based addressing system that requires a different mindset. | File Type | Default File Number |
You cannot talk to your PLC without RSLinx. Ensure your drivers (Ethernet or Serial) are properly configured first. SLC 500 Family: SLC 5/01 through SLC 5/05
You can quickly build rungs by dragging elements directly onto the workspace.
If the PLC has a red "FAULT" light, go to the S2 (Status) file in RSLogix 500 to find the specific error code.
