6ES72266BA320XB0 — Siemens SIMATIC S7-1200 Digital Input Module
Overview
The 6ES72266BA320XB0 follows the Siemens 6ES7 numbering scheme: 6ES7 identifies SIMATIC automation hardware, 22 denotes digital I/O modules, 66 indicates the high-density form factor, BA signals a 24V digital input type, and 320XB0 encodes the revision and package identifier.
This Siemens device is a 16-channel digital input module rated for 24V DC operation. It is designed for use with the SIMATIC S7-1200 PLC family, mounts on a DIN rail inside a control cabinet, and carries IP20 enclosure protection. The operating temperature range is 0°C to 55°C. Certifications on record include CE, FM, and UL. RoHS status is listed as ROHS3 Compliant.
Key Parameters
| Parameter | Value |
|---|---|
| MPN | 6ES72266BA320XB0 |
| Brand | Siemens |
| Number of Inputs and Type | 16 – Digital |
| Voltage | 24V (implied by title / family) |
| Ingress Protection | IP20 |
| Mounting Type | DIN Rail |
| Operating Temperature | 0°C ~ 55°C |
| For Use With | SIMATIC S7-1200 |
| Approval Agencies | CE, FM, UL |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
| Encapsulation / Package | Bulk |
Similar Catalog Parts
The following parts share the SIMATIC S7-1200 platform, 24V voltage class, IP20 rating, and DIN Rail mounting. All require the reader's own qualification before use in a specific control architecture.
| MPN | Type | I/O Count | Operating Temp | Encapsulation |
|---|---|---|---|---|
| 6ES72211BH320XB0 | Digital Input | 16 DI | 20°C~60°C | Bulk |
| 6ES72221BH320XB0 | Digital Output | 16 DO | 20°C~60°C | Bulk |
| 6ES72221BF320XB0 | Digital Output | 8 DO | 20°C~60°C | Bulk |
| 6ES72266DA320XB0 | Digital Output | 4 DO | 0°C~55°C | Bulk |
| 6ES72231BH320XB0 | Digital I/O | 8 DI / 8 DO | 20°C~60°C | Box |
| 6ES72231BL320XB0 | Digital I/O | 16 DI / 16 DO | 20°C~60°C | Box |
| 6ES72233BD300XB0 | Digital I/O | 2 DI / 2 DO | 20°C~60°C | Box |
| 6ES72266RA320XB0 | F-DQ Output | 2 DO | 0°C~55°C | Box |
Why they appear in this comparison:
- 6ES72211BH320XB0: Same 16-digital-input count, 24V class, IP20, DIN Rail — differs by wider operating temperature (20°C~60°C) and additional CSA certification.
- 6ES72266DA320XB0: Matches voltage class, IP20, DIN Rail, and 0°C~55°C temperature — a 4-channel digital output from the same 66-series high-density family.
- 6ES72266RA320XB0: Same 66-series, same IP20, same temperature, DIN Rail — a 2-channel fail-safe (F-DQ) output module with CE and cULus markings; different output count and safety function.
All eight alternates share the same 6ES7 family prefix, the same S7-1200 compatibility field, and identical mounting and IP ratings. Differences in I/O count, temperature range, and package style are evident in the table above.