The 6ES7141-5BF00-0BL0 is a compact IO-Link digital input module from the SIMATIC ET 200AL family. At 30mm wide and 145g, it provides 8 Type 3 inputs through M8 connectors in an IP65/67 housing. It connects directly to any standard IO-Link master port and draws power from the master 1Us+ supply, eliminating the need for a separate power feed or ET 200AL interface module.

Why choose IO-Link over the PROFINET variant for digital inputs?

The IO-Link variant (0BL0) simplifies standalone sensor clusters. Connect it to any IO-Link master port and it appears as an IO-Link device with 8 inputs, no backplane or interface module required. The PROFINET variant (0BA0) requires an ET 200AL interface module and backplane bus but supports multi-module stations and safety-rated tripping. Choose IO-Link for isolated sensor groups; choose PROFINET for larger modular I/O stations.

How does the M8 form factor serve space-constrained applications?

The M8 variant saves 33% width and 28% weight over the M12 version. M8 connectors suit applications where sensor density is high and space is tight, such as end-of-arm robot tooling, compact assembly cells, and packaging machine sensor arrays. The tradeoff is a shared 0.7A encoder supply versus per-channel 100mA on the M12 variant.

Frequently Asked Questions

Does the IO-Link variant support safety-rated tripping?

No. The 0BL0 IO-Link variant does not support safety functions. For applications requiring safety-rated tripping of standard actuators up to PL d / SIL 2, select the PROFINET variant 6ES7141-5BF00-0BA0, which supports safety-related tripping when used within an ET 200AL station with a suitable safety controller.

How many sensors can the encoder supply power simultaneously?

The module provides a shared 0.7A encoder supply from the IO-Link master 1Us+ rail. All eight connected sensors draw from this common pool. For typical 3-wire sensors consuming 50-80mA each, eight sensors fit comfortably within the 0.7A budget. Verify total sensor consumption against the 0.7A limit during planning.