1734-4IOL - POINT I/O 4-Channel IO-Link Master Module
MPN: 1734-4IOL ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1100 | $1,100.00 |
| 10 | $1075 | $10,750.00 |
| 100 | $1040 | $104,000.00 |
| 500 | $1010 | $505,000.00 |
| 1,000 | $985 | $985,000.00 |
1734-4IOL Overview
An IO-Link master is a fieldbus gateway that provides a point-to-point digital communication channel between a controller and a single IO-Link device (sensor or actuator), serving as the IO-Link backbone in the industrial sensor-to-cloud hierarchy (IO-Link device -> IO-Link master -> fieldbus/industrial Ethernet -> PLC/DCS). IO-Link sits below traditional fieldbus layers, replacing analog and discrete wiring with a standardized 3-wire (or 4-wire for high-power actuators) point-to-point link that delivers process data, diagnostic data, and parameter data on demand. The 1734-4IOL brings this standard into the Allen-Bradley POINT I/O distributed-I/O platform, enabling Logix controllers to read and write IODD-described parameters, configure devices via IODD, and react to real-time diagnostic events.
Key features include four Class A IO-Link ports, per-port short-circuit and overload protection, automatic IODD file storage with revision tracking, and a configurable process-data length per channel. The module draws field power (24V DC) from the POINT I/O backplane through its terminal base, separating it from the backplane communication power so that field-side faults do not affect network connectivity. Configuration is performed in Studio 5000 Logix Designer using the supplied Add-On Profile (AOP), which exposes every port mode, device identity, IODD revision, process-data size, validation policy, and field-power calculation in a structured tree view, simplifying replacement and reuse.
Typical applications include factory-floor sensor aggregation on packaging machinery, robot end-effector tooling identification on assembly cells, condition-monitoring vibration sensor networks, and vision-system lighting controller integration. The compact 12.7 mm-wide housing allows high-density I/O in control cabinets where panel space is limited, and the conformal-coated 1734-4IOLK variant extends operation into harsh-environment applications such as food and beverage washdown areas.
When designing with this module, ensure that the terminal base matches the wiring requirements (1734-TB, 1734-TBS, 1734-TB3, or 1734-TB3S) and that the upstream 1734-AENT(R) adapter firmware revision is compatible with the desired Logix Designer version. Field power budgeting must account for the sum of attached IO-Link device currents, and IODD files must be loaded into the AOP before commissioning to unlock vendor-specific parameters.
Drop-in alternatives for 1734-4IOL — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
1734-4IOLK
✅ Drop-In📋 Reference alternative (not in catalog)
1734-4IOL Series A
✅ Drop-In📋 Reference alternative (not in catalog)
1734 POINT I/O 4ch IO-Link
✅ Drop-In📋 Reference alternative (not in catalog)
1734-4IOL Specifications
| Catalog Number | 1734-4IOL |
| Series | B |
| Module Type | POINT I/O 4-Channel IO-Link Master |
| Number of Channels | 4 |
| IO-Link Specification | v1.0 / v1.1 compliant |
| Port Modes | Standard DI, Standard DO, IO-Link, Fallback, Disabled |
| Upstream Communication | POINT I/O backplane via 1734-AENT or 1734-AENTR adapter |
| Configuration Software | Studio 5000 Logix Designer with Add-On Profile (AOP) |
| Mounting | DIN rail via 1734 terminal base (TB/TBS/TB3/TB3S) |
| Required Adapter | 1734-AENT or 1734-AENTR |
| Conformal Coated Variant | 1734-4IOLK (same specs, conformal coated) |
| Housing Width | 12.7 mm |
| Application Environment | In-cabinet (1734-4IOL), harsh-environment (1734-4IOLK) |
| Accessories | 1734-TB, 1734-TBS, 1734-TB3, 1734-TB3S, 1734-TOP, 1734-TOPS, 1734-TOP3, 1734-TOP3S |
1734-4IOL standard Pin Configuration Guide
Pin configuration for 1734-4IOL (standard package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for 1734-4IOL.
Refer to the datasheet for full pin configuration.
Typical Applications
1734-4IOL is suitable for 7 applications: Packaging Machinery Sensor Aggregation, Robotic End-Effector Tool Identification, Condition Monitoring Vibration Sensor Network, Vision-System Lighting Controller Integration, Food and Beverage Washdown Skid, Automotive Body Shop IO-Link Network, Pharmaceutical Cleanroom Distributed I/O.
Packaging Machinery Sensor Aggregation
The 1734-4IOL aggregates up to four smart packaging-line sensors - such as label-presence, cap-detection, fill-level, and vision-system lighting - on a single POINT I/O node, eliminating parallel discrete wiring harnesses. Each IO-Link channel carries process data, diagnostic data, and parameter data from a vendor-supplied IODD file into Logix Designer, so engineers can read and write parameters without manual HMI screens. The module's 12.7 mm housing width allows high-density placement next to conveyor motors in compact packaging cells, and the per-channel fallback mode provides graceful degradation when an IO-Link device is disconnected or replaced.
Recommended
Robotic End-Effector Tool Identification
On robotic assembly cells, the 1734-4IOL reads tool-ID and condition-monitoring data from IO-Link-tagged grippers, vacuum generators, and torque tools over a single 3-wire M12 cable per channel. The IO-Link master's deterministic cycle time lets the controller validate the tool before each pick, while diagnostic data flags worn gripper pads before they cause scrap. Because the module sits on the POINT I/O backplane next to the robot controller, the same Studio 5000 project handles both motion and IO-Link configuration, simplifying commissioning.
Recommended
Condition Monitoring Vibration Sensor Network
Vibration and temperature sensors with IO-Link interfaces stream high-resolution FFT data and RMS trends into a 1734-4IOL, enabling predictive-maintenance logic inside the Logix controller. The four-channel density allows grouping sensors by machine (motor, pump, gearbox, bearing housing) on a single module, simplifying cabling to the field and reducing the number of POINT I/O nodes in the cabinet. With per-channel IODD management, the AOP tracks firmware revisions of attached sensors and warns when a device's IODD is out of date.
Recommended
Vision-System Lighting Controller Integration
IO-Link-controlled LED lights expose brightness, color temperature, and strobe-timing parameters over a single 3-wire cable, and the 1734-4IOL can manage up to four lighting zones per module. The studio-5000 AOP lets vision engineers tune lighting recipes from the Logix program rather than from vendor-specific configurators, which simplifies recipe-changeover for SKUs in mixed-model production lines. Field-power budgeting through the AOP ensures the total lighting current does not exceed the 24V backplane budget.
Recommended
Food and Beverage Washdown Skid
On washdown-rated food-and-beverage skids, the conformal-coated 1734-4IOLK variant provides the same four IO-Link master channels as the standard module while withstanding caustic cleaning agents, humidity, and condensation. Hygienic IO-Link sensors for temperature, conductivity, level, and flow all run from IODD files managed by the AOP, allowing batch traceability data to flow directly into the Logix recipe. The 12.7 mm housing width keeps the cabinet footprint small, which is critical on compact skid packages.
Recommended
Automotive Body Shop IO-Link Network
In automotive body shops, the 1734-4IOL serves as a four-channel IO-Link master for clamp pressure sensors, weld-current monitors, and RFID tool-ID readers distributed across robotic weld cells. The EtherNet/IP backplane through the 1734-AENT(R) adapter supports deterministic multicast IO, allowing weld-quality data to be aggregated in real time for SPC dashboards. The per-channel validation policy in the AOP prevents unauthorized IO-Link device swaps from silently changing process behavior on safety-relevant weld cells.
Recommended
Pharmaceutical Cleanroom Distributed I/O
The 1734-4IOL supports cleanroom-grade IO-Link sensors for differential pressure, particle counters, and temperature/humidity probes where discrete analog wiring would be costly and noisy. Each channel's IODD file describes the sensor's full parameter set - including calibration date and last-cleaned timestamp - enabling GMP-compliant audit trails inside the Logix controller. The compact DIN-rail housing minimizes cabinet depth, which is valuable in cleanrooms where wall space is dedicated to HEPA filtration rather than enclosures.
Recommended
Recommended Products Summary
Engineering reference data for 1734-4IOL — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 1734-4IOLK | 1734-4IOL Series A |
|---|---|---|---|
| Brand | Rockwell Automation (Allen-Bradley) | Rockwell Automation (Allen-Bradley) | Rockwell Automation (Allen-Bradley) |
| Package | POINT I/O 12.7 mm module | POINT I/O 12.7 mm module (conformal coated) | POINT I/O 12.7 mm module |
| Number of Channels | 4 IO-Link master channels | 4 IO-Link master channels | 4 IO-Link master channels |
| IO-Link Specification | v1.0 / v1.1 | v1.0 / v1.1 | v1.0 / v1.1 |
| Series | Series B (firmware 4.011) | Series B (firmware 4.011) | Series A (legacy firmware) |
| Conformal Coating | No (standard module) | Yes (harsh-environment rated) | No |
| Required Adapter | 1734-AENT or 1734-AENTR | 1734-AENT or 1734-AENTR | 1734-AENT or 1734-AENTR |
Key Differentiators
- Only POINT I/O module with both standard digital I/O and IO-Link on every channel (vs Generic 1734 discrete modules)
- Add-On Profile exposes IODD revision, process-data size, and validation policy per channel (vs Manual IO-Link commissioning via vendor tools)
- Available with conformal coating for harsh-environment washdown zones (vs Standard 1734-4IOL (in-cabinet only))
Design Notes
Field-power budgeting is critical when designing with the 1734-4IOL: the sum of all attached IO-Link device supply currents (per channel, including actuator high-current pulses) must not exceed the 24V DC field-power budget of the upstream 1734-AENT or 1734-AENTR adapter. The Logix Designer AOP exposes a field-power calculation tool that should be filled in during commissioning; ignoring this calculation is a common cause of intermittent field-power brownouts that falsely look like IO-Link device faults.
Mount the 1734-4IOL only on a 1734 terminal base that matches the wiring style (1734-TB / 1734-TB3 for screw, 1734-TBS / 1734-TB3S for spring). Spring bases are strongly preferred in cabinets subject to vibration - such as those mounted on packaging skids or near stamping presses - because screw terminations can loosen over time and produce intermittent IO-Link faults that mimic sensor failures. Always torque screw bases to the value specified in publication 1734-IN043E-EN-E.
Do not migrate from a 1734 discrete I/O module to the 1734-4IOL without preserving every port mode, device identity, IODD revision, process-data size, validation policy, and field-power calculation in the new Logix program. According to the apter.com datasheet mirror, silent mismatches in IODD revision or process-data size are the most common cause of 'no communication' faults after a swap. Always export and re-import the AOP configuration rather than recreating tags by hand.
Series A and Series B 1734-4IOL modules share the same footprint but differ in firmware features. Mixing series inside a single POINT I/O bank may work mechanically but can produce inconsistent behavior if the AOP expects Series B features (such as enhanced IODD revision tracking). Standardize on a single series per cabinet and document the choice in the program comments for future maintainers.
Compliance Information
RoHS, REACH, and lead-free status for the 1734-4IOL were not explicitly present in the provided web data; consult the official Rockwell Automation product environmental compliance documentation for current declarations. AEC-Q100 is not applicable as this is an industrial automation module rather than an automotive-grade semiconductor.
