Fanuc Ot 900 Parameter List May 2026

Complete Guide: Fanuc OT-900 Parameter List

The Fanuc OT 900 parameter list is essential for several reasons:

  • Bit 1-7: Usually reserved for specific servo types depending on the generation (Model A vs Model B servo amps).

    • (Important) Many online OT-900 lists show which bit maps to which option but exact mapping can differ by firmware version, OEM build, or installed option board. Use the table above as the common/default mapping; verify against your machine's service manual. fanuc ot 900 parameter list

    | Bit | Function | |------|-----------| | 7-6 | PMC model: 00 = PMC-L, 01 = PMC-M, 10 = PMC-R (most OT) | | 5 | Number of PMC I/O slots | | 4 | I/O link mode (0 = normal, 1 = high speed) | | 3-0 | Diagnostic memory size: 0010 = 4K, 0100 = 8K, 1000 =16K | Complete Guide: Fanuc OT-900 Parameter List The Fanuc

    To enable Macro B (MA2) on parameter 903, bit 0:

    You need bit 0 = 1. If current is 0, change it. The display will update automatically. Bit 1-7: Usually reserved for specific servo types

    These parameters are used to customize the system's behavior, optimize performance, and ensure accurate machining operations.