Common ground first

Shared Role, Then Model Differences

IC655APU500 / IC655APU510 / IC655APU521

ASCII/BASIC communications, high-speed counting and single-axis positioning under three distinct APU catalog numbers.

Shared technical scope

These modules are intelligent Series Five options, but their applications are unrelated. IC655APU500 runs resident BASIC to communicate with serial devices. IC655APU510 counts high-speed pulses. IC655APU521 controls one positioning axis.

Difference boundary

A replacement must preserve the correct application program and external interface. The APU500 may hold BASIC code in RAM/EPROM; the APU510 uses 16 input and 16 output references; the APU521 combines command data with 16 input and 16 output points.

Verified technical data

Common Specifications and Model-Specific Data

Shared context

SystemSeries Five PLC intelligent module

InstallationSingle-slot module

ProgrammingModule-specific setup beyond ordinary discrete I/O

ReplacementRetain program, switches, references and cabling

AcceptanceTest the actual device or motion function

Distinct applications

IC655APU500ASCII/BASIC; serial CRT, printer, barcode reader or scale interface

IC655APU510High-Speed Counter; two count channels; 50 kHz

IC655APU521Axis Positioning Module; one axis; quadrature feedback to 100 k pulses/s; ±10 V servo output

APU510 referencesOccupies 16 input and 16 output references

APU521 commandsIncremental/absolute position, velocity and acceleration

Functional position

Application Data Must Travel with the Hardware

A blank or wrongly configured intelligent module does not reproduce the installed machine function. Archive code, parameters, DIP switches and connected-device details first.

IC655APU500

Save BASIC program, port parameters and memory cartridge.

IC655APU510

Save counter mode, presets, input mode and references.

IC655APU521

Save scaling, motion limits, velocity/acceleration and servo setup.

Controlled replacement

Records to Preserve Before Removal

Step 1

Identify the module application and capture its program/parameter set.

Step 2

Record every switch, connector, reference and external-device rating.

Step 3

Restore the exact APU model and its module-specific configuration.

Manual-driven decisions

Technical Questions

Why must the exact application identity be preserved across IC655APU500 / IC655APU510 / IC655APU521?

They are intelligent Series Five modules requiring application-specific configuration and testing.

Which application role belongs to IC655APU500 within IC655APU500 / IC655APU510 / IC655APU521?

It runs resident BASIC and exchanges data with serial devices such as printers, barcode readers, scales or terminals.

How is IC655APU510 used within IC655APU500 / IC655APU510 / IC655APU521?

It is a high-speed counter with two count channels, a 50 kHz count rate and a fast external output.

Which function separates IC655APU521 from the other modules in IC655APU500 / IC655APU510 / IC655APU521?

It is a single-axis positioning controller using quadrature feedback and a ±10 V servo command.

Can configuration be copied between IC655APU500 / IC655APU510 / IC655APU521?

No. BASIC code, counter parameters and motion parameters are different data sets for different applications.

What is the correct acceptance test for IC655APU500 / IC655APU510 / IC655APU521?

Exercise the exact installed function with limits and interlocks active, then confirm its PLC data exchange.

Moore Automation

Product and Delivery Commitments

Moore Automation offers 100% original products, fast delivery and a 12-month warranty for supplied automation parts.

100% original productsFast delivery12-month warrantyOrder coordination

Product Name	GE Fanuc IC655APU500 / IC655APU510 / IC655APU521 Series Five Intelligent Module
Item NO.	2906107
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	GE
Brand	GE
Creation Time	2026-09-07

GE Fanuc IC655APU500 / IC655APU510 / IC655APU521 Series Five Intelligent Module Item NO.: 2906107

GE Fanuc IC655APU500 / IC655APU510 / IC655APU521 Series Five Intelligent Modules

Shared Role, Then Model Differences