Mouser Adds Banner RSio Remote Safe I/O Blocks for CIP Safety Installations

Mouser announces RSio availability

Mouser Electronics said August 27 that it is now stocking Banner Engineering’s RSio Remote Safe I/O Block. The announcement gives U.S. machine builders, panel shops and industrial integrators a distributor source for Banner’s distributed safety I/O platform, intended for CIP Safety applications on EtherNet/IP-based automation systems.

The availability announcement concerns a product already documented by Banner Engineering earlier in 2026. For procurement teams, the practical development is the addition of Mouser as an authorized channel rather than a newly introduced safety-I/O architecture. Mouser’s product page lists the RSio family as a Banner Engineering offering and provides supporting product literature and model information.

Distributed safety I/O with ISD device diagnostics

RSio is a machine-mountable remote safety I/O block with six independently configurable hybrid I/O ports. Banner states that the inputs can be used with dry-contact or solid-state safety devices, standard control signals, or In-Series Diagnostics-enabled devices. The platform also has two configurable outputs for single- or dual-channel control of final switching devices, safety-rated devices or standard devices.

Its differentiator is In-Series Diagnostics, or ISD. A single RSio input can connect either to one directly monitored safety device or to an ISD chain containing as many as 32 compatible devices. Across six inputs, Banner specifies capacity for up to 192 devices on one block. ISD carries diagnostic information over the same wiring used for OSSD signals, allowing the controller application to identify the device associated with a stop condition rather than only reporting a shared circuit fault.

That architecture may be useful where a conveyor line, palletizer or guarded cell has several access points, emergency stops or other field safety devices. It can reduce homerun wiring compared with individually bringing every device back to a control cabinet, while retaining device-level status where compatible ISD equipment is used.

CIP Safety integration and configuration considerations

Banner specifies CIP Safety support and configuration through Rockwell Automation Studio 5000. Its RSio documentation describes an included electronic data sheet and add-on profile resources with selectable presets for common devices such as emergency stops, light curtains and safety switches. Integrators should confirm controller firmware, Studio 5000 version, device profile installation and the planned safety-network configuration before standardizing on a bill of materials.

CIP Safety is the functional-safety extension of the Common Industrial Protocol. According to ODVA, it enables certified safety communications over standard industrial networks and supports applications requiring up to SIL 3 under IEC 61508. That network capability does not eliminate the need for normal functional-safety engineering: the safety function, wiring, response time, reset behavior, fault handling and validation remain application-specific responsibilities.

Banner lists the RSio component at Category 4, PL e and SIL 3 capability. Those ratings should not be read as an automatic rating for an entire machine. The completed safety function must be designed and validated under the applicable machine-safety requirements, including consideration of connected devices, logic, output elements and stopping performance.

Power and field-installation details

The family is available in versions using Mini power connections with up to 10 A pass-through capacity or M12 L-code power connections with up to 16 A pass-through. Both options use M12 A-code I/O ports and retain the same core I/O function. This choice matters early in design, since connector and downstream-power strategy affect field cabling, spare-parts planning and enclosure or machine-layout decisions.

Banner identifies the enclosure as IP65/IP67 rated and machine mountable, with a listed operating range of -25°C to +70°C. The product is specified for indoor use. It can therefore fit distributed I/O designs that place the block on machinery rather than inside a panel, but installation teams should still assess washdown exposure, cable routing, connector protection, vibration, grounding and service access against the actual environment.

What buyers and integrators should confirm

For new builds, buyers should distinguish the selected RSio power variant and verify the exact part number, required cordsets, compatible safety devices and any network accessories. A design that expects the full 192-device figure also needs to use compatible ISD-enabled devices or ISD Connect arrangements; conventional safety devices do not inherently gain chain-level diagnostics merely by being wired to the block.

For retrofit projects, the strongest fit is likely a machine already using a Rockwell Automation control environment and CIP Safety where distributed wiring and clearer field diagnostics are priorities. Engineering teams should calculate the complete safety response time, review output loading and final switching-device requirements, and perform documented commissioning and validation before putting a modified safety system into service.