Retain the 903 identity
Do not present IC660CBB903 as the automatic-diagnostics controller.
Product Overview
IC660CBB903 is the Phase B Series Six Genius Bus Controller variant without automatic I/O-block diagnostic reporting to the CPU. It still reports its own operating condition and bus condition, and block diagnostics remain available from a Hand-held Monitor.
The controller supports normal I/O service, programmed communications and Phase B Genius bus features. IC660CBB903 must not be described as the diagnostics model; that function belongs to IC660CBB902.
Technical Specifications
ManufacturerGE Fanuc Automation
Official modelIC660CBB903
Product typeGenius bus controller
Host platformSeries Six PLC
Hardware phasePhase B
Automatic block diagnosticsNot sent to CPU
HHM block diagnosticsAvailable
Own/bus diagnosticsReported to CPU
Programmed communicationsSupported
Bus data rates38.4 / 76.8 / 153.6 kbaud
Series Six +5 V load20 load units
Series Six ±12 V load2 load units
Diagnostics Boundary
Bus controlI/O data and programmed messages are exchanged on the Genius bus.
CPU reportingController and bus status reach the CPU; automatic block-diagnostic reports do not.
Local serviceA compatible Hand-held Monitor can still inspect block diagnostics on the bus.
Local Diagnostics and Compatibility
Check host resources
Reserve the documented Series Six slot and power-supply load.
Configure one baud rate
All devices on a Genius bus must share the same rate.
Validate mixed hardware
Review Phase A product restrictions before commissioning a mixed bus.
FAQ
How does IC660CBB903 implement its Diagnostics Boundary role?
IC660CBB903 is the Phase B Series Six Genius Bus Controller variant without automatic I/O-block diagnostic reporting to the CPU. It still reports its own operating condition and bus condition, and block diagnostics remain available from a Hand-held Monitor.
Which Series Six Genius Bus Controller without Automatic Block Diagnostics family context applies to IC660CBB903?
IC660CBB903 belongs to the Genius I/O / Series Six family and should be selected within that documented system context.
Which Hardware phase value defines the Diagnostics Boundary configuration for IC660CBB903?
Hardware phase is documented as Phase B; retain the complete model because adjacent variants can differ.
Before commissioning IC660CBB903, which Retain the 903 identity check matters most?
Do not present IC660CBB903 as the automatic-diagnostics controller.
Can IC660CBB903 be selected without reviewing its Diagnostics Boundary boundary?
No. Confirm the complete IC660CBB903 designation, the associated system configuration and the documented interfaces before replacement.
Why must the full IC660CBB903 identity be retained for the Series Six Genius Bus Controller without Automatic Block Diagnostics enquiry?
The full IC660CBB903 identity separates this configuration from related variants with different hardware, licensing, interfaces or compatibility.
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