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A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI
  • A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI
  • A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI
  • A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI

A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI

Place of Origin JAPAN
Brand Name FANUC
Certification CE RoHS
Model Number A16B-1211-0901
Product Details
Condition:
NEW / USED
Item No.:
A16B-1211-0901
Origin:
JAPAN
Certificate:
CE
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Payment & Shipping Terms
Minimum Order Quantity
1 pcs
Packaging Details
Original packing
Delivery Time
0-3 days
Payment Terms
T/T,PayPal,Western Union
Supply Ability
100 pcs/day
Product Description

A16B-1211-0901 | FANUC PMC-M ROM Board — Series 0-B / 0-C / 0-D / 0-F / Extended PLC Ladder EPROM / Half or Full Width


PMC-M vs PMC-L — Why This Board Matters

DNC Electronics explains the key distinction: "This board is an extended PLC ladder (programmable machine controller) which is loaded up onto the board containing many more EPROMs than the cheaper PMC-L on the memory card can offer."


In FANUC's Series 0-C CNC architecture, PMC (Programmable Machine Controller) ladder programmes come in two tiers:


PMC-L (PMC Light): A compact ladder programme stored on the standard CNC memory card. Limited in programme step count — suitable for machines with relatively simple sequence logic.


PMC-M (PMC Medium): An extended ladder programme stored on the dedicated A16B-1211-0901 ROM board — physically more EPROM capacity than the memory card approach. DNC confirms: "These boards are normally fitted on more complicated 0-C, 0-D, 0-F machine tool installations, allowing 0-C PMC-M ROM PLC ladder functions beyond PMC-L standard."


The implication is straightforward: the A16B-1211-0901 serves the more complex machines — those with larger operator panels, more machine I/O points, more tool change sequences, more auxiliary machine functions — where the PMC-L's step count is insufficient.


Key Specifications

Parameter Value
PMC Type PMC-M (Medium)
Memory Type ROM (EPROM-based)
Compatible 0-B, 0-C, 0-D, 0-F
Machine Types 0-MC, 0-MD, 0-MF, 0-TC, 0-TTC, 0-TD, 0-TF
Format Half or full width PCB
Weight 0.24 lbs
Type Non-surface-mount PCB

PMC-M ROM and RAM — The Complete PMC-M System

Fanuc-controller.com confirms for the adjacent A16B-1211-0910 (PMC-M RAM board): "Provides extended RAM memory for PMC ladder logic execution, machine sequence control, and MMC communication functions. Plug-in module mounts on the main control unit, often paired with ROM board A16B-1211-0901 or similar."


In the PMC-M architecture:

  • A16B-1211-0901 (ROM board): Holds the PMC ladder programme in non-volatile EPROM. The ladder logic is stored here permanently — it survives power cycles without battery backup.
  • A16B-1211-0910 (RAM board): Provides the working memory where the ROM-stored ladder programme executes — the RAM space for variable data, timers, counters, and intermediate results during PMC execution.

Application Scenarios

PMC-M ROM board fault: A Series 0-C machining centre develops PMC alarms — sequence logic fails, machine functions become unresponsive. The A16B-1211-0901 ROM board is identified as the fault. Replacement (with correct ladder programme content) restores PMC function.


Series 0-C machine tool upgrade from PMC-L: A Series 0-C CNC running PMC-L requires more ladder programme capacity after machine modifications add new sequences. The A16B-1211-0901 PMC-M ROM board is installed to provide the extended EPROM capacity for the larger programme.


FAQ

Q1: What is the PMC-M ROM board's role when the EPROM content is blank?

The A16B-1211-0901 is a hardware board — its EPROM chips store the actual PMC ladder programme for the specific machine tool. A replacement board with blank EPROMs cannot execute any sequence logic until the correct ladder programme is loaded. The machine tool builder or FANUC service engineer holds the original programme content — confirm this before ordering a replacement board without pre-loaded programme content.


Q2: Is A16B-1211-0901 compatible with both half-width and full-width CNC chassis formats?

CNC Electronics confirms: "Can be plugged into 16 or 32 bit 0-C masters half or full width format." The board physically supports both chassis configurations. Confirm the specific chassis format from the machine tool's panel documentation.


Q3: How does A16B-1211-0901 differ from the PMC-M RAM board (A16B-1211-0910)?

A16B-1211-0901 is the ROM board — non-volatile EPROM-based storage for the PMC ladder programme code. A16B-1211-0910 is the RAM board — volatile working memory for PMC execution. Both are needed for the complete PMC-M system. The ROM board stores the programme permanently; the RAM board provides the execution workspace.


Q4: Does replacing A16B-1211-0901 affect CNC axis parameters?

No. CNC axis parameters (servo gains, feedrate limits, coordinate offsets) reside in the CNC's main SRAM — separate from the PMC ROM board. Replacing A16B-1211-0901 does not affect stored axis parameters. Only the PMC ladder programme is affected — which must be present on the replacement board's EPROM.


Q5: What service options are available for A16B-1211-0901?

Multiple suppliers service this board: MRO Electric (exchange and repair), CNC Electronics (exchange, surplus, and repair), 4D Controls (repair service). This board has comprehensive after-market support across three continents.



A16B-1211-0901 Fanuc PCB Board A16B12110901 AI6B-I2II-O9OI 0

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