How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
- Part number
- 6BK1700-0BA20-0AA0
Siemens has announced the end of 6BK1700-0BA20-0AA0
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LOGO! 8Siemens 6BK1700-0BA20-0AA0 LOGO! 8 CMK2000 KNX Communication Module 24V DC PLC Communication Module
LOGO! CMK2000 KNX communication module for LOGO! 8, 24V DC, RJ45 Ethernet, 50 communication objects.
Description
About the 6BK1700-0BA20-0AA0
About the 6BK1700-0BA20-0AA0
The Siemens 6BK1700-0BA20-0AA0 is a LOGO! CMK2000 communication module that integrates the LOGO! 8 logic module into a KNX building-system bus. It mounts on a 35 mm DIN rail, connects at 24 V DC drawing 0.04 A, adds one RJ45 Ethernet port, supports 50 communication objects, and provides time-of-day synchronization with web-based configuration and diagnostics through its built-in web server.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- KC
- EAC
Selection Notes
The CMK2000 is the LOGO! 8 gateway onto KNX/EIB building-bus systems; choose it when a LOGO! program needs to publish or receive up to 50 KNX communication objects on the same panel that already runs standard LOGO! Ethernet communication. The single RJ45 port carries LOGO! communication on the PLC side while the KNX terminal handles the field-bus side, so no separate gateway device is required.
Specification
Full specification
General information 1
| Firmware version: FW update possible | Yes |
|---|
Installation type/mounting 1
| Mounting | on 35 mm DIN rail, 4 spacing units wide |
|---|
Supply voltage 3
| Rated value (DC) | 24 V |
|---|---|
| permissible range, lower limit (DC) | 19.2 V |
| permissible range, upper limit (DC) | 28.8 V |
Show all 54 specifications ↓ Show less ↑49 more values in Identification, Input current, Storage, Time of day, Interfaces, Protocols, Communication functions, Interrupts/diagnostics/status information, EMC, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Connection method, Dimensions, Weights, Logistics.
Identification 9
| Part number | 6BK1700-0BA20-0AA0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4047618066406 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
Input current 1
| Current consumption, max. | 0.04 A |
|---|
Storage 1
| Flash | Yes |
|---|
Time of day 1
| Clock synchronization: supported | Yes |
|---|
Interfaces 4
| Number of industrial Ethernet interfaces | 1; Ethernet, 1 port, RJ45 |
|---|---|
| Number of other interfaces | 1; EIB/KNX |
| Transmission rate, max. | 100 Mbit/s over Ethernet, 9 600 bit/s over KNX |
| Design of plug-in connection | KNX terminal 0.6 mm2 - 1.0 mm2 |
Protocols 2
| EIB/KNX | Yes |
|---|---|
| Web server: supported | Yes |
Communication functions 2
| S7 basic communication: supported | No |
|---|---|
| LOGO! communication: supported | Yes |
Interrupts/diagnostics/status information 1
| Diagnostics indication LED: RUN/STOP LED | Yes |
|---|
EMC 1
| Emission of radio interference acc. to EN 55 011: Limit class B, for use in residential areas | Yes; In accordance with EN 61000-6-3 |
|---|
Degree and class of protection 1
| IP degree of protection | IP20 |
|---|
Standards, approvals, certificates 10
| CE mark | Yes |
|---|---|
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | No |
| RCM (formerly C-TICK) | No |
| KC approval | Yes |
| EAC (formerly Gost-R) | Yes |
| according to VDE 0631 | No |
| Marine approval | No |
Ambient conditions 5
| Ambient temperature during operation: min. | 0 °C |
|---|---|
| Ambient temperature during operation: max. | 55 °C |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Relative humidity: Operation, max. | 95 % |
Connection method 1
| Design of electrical connection for supply voltage | 2 screw-type terminals: L+, M 0.5 mm2 - 2.5 mm2 Screw-type terminal: FE 0.5 mm2 ... 6.0 mm2 |
|---|
Dimensions 3
| Width | 71.5 mm; 4TE |
|---|---|
| Height | 90 mm |
| Depth | 58.5 mm |
Weights 1
| Weight, approx. | 0.14 kg |
|---|
Logistics 6
| Net weight | 0.18 kg |
|---|---|
| Country of origin | DE |
| Shipping weight | 0.68 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6BK1700-0BA20-0AA0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- CSA approval
- UL approval
- cULus
- KC approval
- EAC (formerly Gost-R)
Quick answers
Questions about the 6BK1700-0BA20-0AA0
What is the rated current of 6BK1700-0BA20-0AA0?
The rated current of 6BK1700-0BA20-0AA0 is 0.04 A.
Which supply voltage is 6BK1700-0BA20-0AA0 rated for?
The rated operational voltage of 6BK1700-0BA20-0AA0 is 24 V AC.
What is the HS code of 6BK1700-0BA20-0AA0 for customs?
The tariff (HS) code on file for 6BK1700-0BA20-0AA0 is 85389091.
What is the EAN of 6BK1700-0BA20-0AA0?
The EAN (GTIN) of 6BK1700-0BA20-0AA0 is 4047618066406.
Where does 6BK1700-0BA20-0AA0 ship from, and how fast?
6BK1700-0BA20-0AA0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Reviews
Customer reviews
Series
Siemens LOGO! 8
- Brand
- Siemens
- Series
- LOGO! 8
