6ES7540-1AB00-0AA0

Communication Module, 35 mm x 127 mm x 147 mm, RS422 Serial Connection

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Manufacturer: SIEMENS
Product type: Controller Accessories
SVHC: To Be Advised

Delivery and price
Units per pack	1
Price	508.08 €
Current stock	10+
Lead time	30 days

Datasheet

**6ES7540-1AB00-0AA0** 

**Data sheet** 

SIMATIC S7-1500, CM PTP RS422/485 BA Communication module for Serial connection RS422,RS485 Freeport, 3964 (R), USS, 19200 Kbit/s, 15-Pin D-sub socket 

|**General information**||
|---|---|
|Product type designation|CM PtP RS 422 / 485 BA|
|Product function||
|● I&M data|Yes; I&M 0|
|● Fast startup|Yes|
|Engineeringwith||
|● STEP 7 TIA Portal configurable/integrated from version|V12 / V12|
|● STEP 7 configurable/integrated from version|V5.5 SP2 with GSD file|
|● PROFIBUS from GSD version/GSD revision|- / -|
|● PROFINET from GSD version/GSD revision|V2.3|
|**Installation type/mounting**||
|Rail mounting|Yes; S7-1500 mountingrail|
|**Input current**||
|Current consumption(rated value)|43 mA; From the backplane bus|
|**Power**||
|Power consumption from the backplane bus|0.65 W|
|**Power loss**||
|Power loss, typ.|0.6 W|
|**Address area**||
|Address spaceper module||
|● Inputs|8 byte|
|**Interface types**||
|RS 485||
|● Transmission rate, max.|19.2 kbit/s|
|● Cable length, max.|1 200 m|
|RS 422||
|● Transmission rate, max.|19.2 kbit/s|
|● Cable length, max.|1 200 m|
|● 4-wire full duplex connection|Yes|
|● 4-wire multipoint connection|No|
|**Protocols**||
|Integratedprotocols||
|Freeport||
|— Telegram length, max.|1 kbyte|
|— Bits per character|7 or 8|



6ES75401AB000AA0 Page 1/3 

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|— Number of stopbits|1 or 2 bit|1 or 2 bit|1 or 2 bit|
|---|---|---|---|
|— Parity|None, even, odd, always 1, always 0, any|||
|3964(R)||||
|— Telegram length, max.|1 kbyte|||
|— Bitsper character|7 or 8|||
|— Number of stopbits|1 or 2 bit|||
|— Parity|None, even, odd, always 1, always 0, any|||
|Telegram buffer||||
|● Buffer memoryfor telegrams|2 kbyte|||
|● Number of telegrams which can be buffered|255|||
|**Interrupts/diagnostics/status information**||||
|Diagnostics function|Yes|||
|Alarms||||
|● Diagnostic alarm|Yes|||
|● Hardware interrupt|No|||
|Diagnoses||||
|● Wire break|Yes|||
|Diagnostics indication LED||||
|● RUN LED|Yes;green LED|||
|● ERROR LED|Yes; red LED|||
|● Receive RxD|Yes; Yellow LED|||
|● Transmit TxD|Yes; Yellow LED|||
|**Potential separation**||||
|between backplane bus and interface|Yes|||
|**Isolation**||||
|Isolation tested with|707 V DC(type test)|||
|**Ambient conditions**||||
|Ambient temperature duringoperation||||
|● horizontal installation, min.|0 °C|||
|● horizontal installation, max.|60 °C|||
|● vertical installation, min.|0 °C|||
|● vertical installation, max.|40 °C|||
|Altitude duringoperation relatingto sea level||||
|● Installation altitude above sea level, max.|5 000 m; restrictions for installation altitudes > 2 000 m, see ET 200MP system<br>manual|||
|**Decentralized operation**||||
|to SIMATIC S7-300|Yes|||
|to SIMATIC S7-400|Yes|||
|to SIMATIC S7-1500|Yes|||
|to standard PROFINET controller|Yes|||
|**Dimensions**||||
|Width|35 mm|||
|Height|147 mm|||
|Depth|127 mm|||
|**Weights**||||
|Weight, approx.|0.22 kg|||
|**Classifications**||||
|||**Version**|**Classification**|
||eClass<br>eClass<br>eClass<br>eClass<br>eClass<br>eClass<br>eClass<br>ETIM<br>ETIM|14<br>12<br>9.1<br>9<br>8<br>7.1<br>6<br>10<br>9|27-24-22-08<br>27-24-22-08<br>27-24-22-08<br>27-24-22-08<br>27-24-22-08<br>27-24-22-08<br>27-24-22-08<br>EC001423<br>EC001423|



||**Version**|**Classification**|
|---|---|---|
|eClass|14|27-24-22-08|
|eClass|12|27-24-22-08|
|eClass|9.1|27-24-22-08|
|eClass|9|27-24-22-08|
|eClass|8|27-24-22-08|
|eClass|7.1|27-24-22-08|
|eClass|6|27-24-22-08|
|ETIM|10|EC001423|
|ETIM|9|EC001423|



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5/19/2026 

|||||ETIM|8|EC001423|
|---|---|---|---|---|---|---|
|||||ETIM|7|EC001423|
|||||IDEA|4|3564|
|||||UNSPSC|15|32-15-17-05|
|**Approvals / Certificates**<br>**General Product Approval**<br>~~a~~|||||||
|||®||FAL|«ce|«=OUK|
||**Test Certificates**|**Maritime application**||||**other**|
||Type Test Certific-|||||Confirmation|
||ates/Test Report||||||
||**other**|**Environment**|||||
|||Environmental Con-|||||
||QCPASS|firmations|EcoTech|EPD|||
||**last modified:**|||10/23/2025|||



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Subject to change without notice © Copyright Siemens 

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Updated at April 10, 2026

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