The Siemens 6GT2821-4BC32 is an SIMATIC RF240R RFID reader from the RF200 family, designed to read and write to ISO 15693 and ISO 18000-3 transponders at 13.56 MHz. It communicates via an IO-Link V1.1 interface to a master, with a maximum cable length of 20 m between reader and master. The integrated antenna gives a read/write range up to 65 mm, though actual range depends on the transponder type — Siemens application note 67384964 covers the pairing.

Siemens 6GT2821-4BC32 SIMATIC RF240R RFID Reader, IO-Link, I
Siemens SIMATIC RF200 RF240R RFID reader, 6GT2821-4BC32, IO-Link V1.1, 13.56 MHz, IP67, 50 x 50 x 30 mm, 24 VDC, 0.05 A.
Specifications
| Parameter | Value |
|---|---|
| Operating frequency (rated) | 13.56 MHz |
| Supported RF protocols | ISO 15693, ISO 18000-3 |
| Compatible transponders / systems | ISO 15693 transponder (MDS Dxxx), for connecting to IO-Link Master V1.1 |
| Read/write range, max. | 65 mm; Range is dependent on transponder type: observe http://support.automation.siemens.com/WW/view/en/67384964 |
| Air-interface data rate, max. | 26.5 kbit/s |
| Multitag capable | No |
| Parameter | Value |
|---|---|
| Read time per byte (typ.) | 2.4 ms |
| Write time per byte (typ.) | 3.3 ms |
| MTBF | 430 a |
| Parameter | Value |
|---|---|
| Communication interfaces | IO-Link V1.1 |
| Electrical connector type | M12, 4-pin |
| Voltage range (DC) | 20.4 ... 28.8 V |
| Rated value (DC) | 24 V |
| Current at 24 V (typ.) | 0.05 A |
| Status indicators (LEDs) | 3-color LED |
| Parameter | Value |
|---|---|
| Mounting / fastening method | 2 x M5 screws |
| Width | 50 mm |
| Height | 30 mm |
| Depth | 50 mm |
| Material | PA6.6 |
| Color | anthracite |
| Parameter | Value |
|---|---|
| Degree of protection (IP) | IP67 |
| Operating temperature range | -20 ... +70 °C |
| Storage temperature range | -25 ... +80 °C |
| Transport temperature range | -25 ... +80 °C |
| Shock acceleration | 500 m/s² |
| Vibration acceleration | 200 m/s² |
| Shock resistance standard | EN 60721-3-7 Class 7 M2 |
| Parameter | Value |
|---|---|
| IECEx certified | No |
Product details
Frequently asked questions
What is the MTBF of the 6GT2821-4BC32?
The listed MTBF is 430 a (years). This is a reliability figure for the reader under rated operating conditions.
What colour is the 6GT2821-4BC32 housing?
The housing colour is anthracite.
Will the 6GT2821-4BC32 drop into a panel specified for the 6ES7222-1BF22-0XA0?
No. The 6GT2821-4BC32 is an RFID reader with an M12 connector and IO-Link interface, while the 6ES7222-1BF22-0XA0 is a digital output module for a SIMATIC S7-200 PLC with screw terminals. They serve completely different functions and are not mechanically or electrically interchangeable.
What compliance documentation is available for the 6GT2821-4BC32?
The evidence does not list RoHS, REACH, UL, or IEC certifications for this specific order code. The reader is designed for operation with ISO 15693 transponders and IO-Link V1.1 masters, and its shock/vibration ratings reference EN 60721-3-7. For full compliance declarations, consult Siemens documentation or request them with an RFQ.