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Honeywell hardware documentation includes FS-IOBUS-HBS in the non-redundant IOCHAS-0001S assembly.
Product overview:
FS-IOBUS-HBS carries non-redundant Safety Manager I/O bus signals horizontally across the IOCHAS-0001S module positions.
Connector alignment is essential because the assembly links every module slot to the single slot-21 IO-0001 extender.
Verified resources for FS-IOBUS-HBS:
Verified specifications for FS-IOBUS-HBS:
Typical applications:
The assembly is a chassis-specific signal interconnect and is not intended for external field wiring.
Safety and compliance:
De-energize and document every flat-cable position before service to avoid slot-to-slot connection errors.
Performance and efficiency:
The bus backplane reduces individual wiring while providing a consistent communication path across all non-redundant I/O slots.
FS-IOBUS-HBS is a non-conformal-coated non-redundant horizontal i/o bus backplane for the Honeywell Safety Manager platform. FS-IOBUS-HBS provides eighteen flat-cable connections for I/O modules in slots 1 through 18 and one connection for the IO-0001 extender in slot 21.
A 20-pin flat-cable assembly connects the horizontal backplane to the middle connector of the IO-0001 module. Verify the S chassis, cable orientation, slot numbering and connector condition before fitting or replacing this bus component.





