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Siemens SIMATIC S7-1500 6ES7541-1AB01-0AB0 CM PtP RS422/485 HF Communication Module

Siemens SIMATIC S7-1500 6ES7541-1AB01-0AB0 CM PtP RS422/485 HF Communication Module

SIEMENS | SIMATIC S7-1500

6ES7541-1AB01-0AB0

CM PtP RS422/485 HF Serial Communication Module

KEY CONFIGURATION

RS-422 / RS-485 | Freeport, 3964(R), USS, Modbus RTU master/device | up to 250 kbit/s | 15-pin D-sub socket

LEAD TIME: In stock

WARRANTY: 1 year

Email Inquiry [email protected]

WhatsApp +86 18159889985

Appurtenance:

siemens 6es7541 1ab01 0ab0 cm ptp rs422 rs485 hf-1

Overview
Technical Data
Inquiry
Features
Interfaces
Installation
Environment
FAQ
Recommend Models
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Siemens SIMATIC S7-1500 CM PtP RS422/485 HF

6ES7541-1AB01-0AB0 Serial Communication Module

The 6ES7541-1AB01-0AB0 provides a high-feature point-to-point serial interface for SIMATIC S7-1500 systems. It supports RS-422 and RS-485 connections with Freeport, 3964(R), USS and Modbus RTU protocols for flexible integration of serial devices.

Selection highlights: maximum RS-485 transmission rate 250 kbit/s, maximum cable length 1,200 m, 15-pin D-sub socket, 8 kbyte telegram buffer and diagnostics LEDs for RUN, ERROR, RxD and TxD.

Technical Data

Official configuration for the exact complete model 6ES7541-1AB01-0AB0.

Complete model	6ES7541-1AB01-0AB0
Product family	SIMATIC S7-1500
Product type	CM PtP RS422/485 HF communication module
Hardware functional status	FS02
Firmware version	V3.0.0
Mounting	S7-1500 mounting rail
Backplane current	43 mA rated
Power consumption	0.65 W from the backplane bus
Power loss	0.6 W typical
Serial interface	RS-422 and RS-485; 15-pin D-sub socket
Maximum data rate	RS-485: 250 kbit/s; RS-422: 115.2 kbit/s
Maximum cable length	1,200 m
Protocols	Freeport, 3964(R), USS, Modbus RTU master and device
Telegram buffer	8 kbyte; up to 255 buffered telegrams
Dimensions	35 x 147 x 127 mm (W x H x D)
Weight	Approx. 0.22 kg
Operating temperature	Horizontal: -30 to 60 C; vertical: -30 to 40 C
Installation altitude	Up to 5,000 m; restrictions apply above 2,000 m
Approvals	CE, UKCA, UL, RCM, KC, ATEX, IECEx and maritime approvals shown in the Siemens data sheet

Inquiry

CONTACT

STELLA

Email Inquiry

[email protected]

+86 18159889985

Features

High-feature point-to-point communication

Adds one configurable serial channel to a SIMATIC S7-1500 station for direct connection of RS-422 and RS-485 devices.

Flexible protocol support

Supports Freeport, 3964(R), USS and Modbus RTU master/device communication. Modbus addressing covers 1 to 247, with extended addressing up to 65535.

Buffered and diagnostic operation

Provides an 8 kbyte telegram buffer, stores up to 255 telegrams and reports operating, error, receive and transmit status through dedicated LEDs.

Interfaces

RS-485

Up to 250 kbit/s and 1,200 m cable length.

RS-422

Up to 115.2 kbit/s and 1,200 m cable length.

Physical connection

The module uses a 15-pin D-sub socket and supports RS-422 four-wire full-duplex operation. The interface is electrically isolated from the backplane bus.

Configurable framing

Freeport and 3964(R) telegrams support 7- or 8-bit characters, 1 or 2 stop bits and selectable parity settings.

Installation

Mechanical installation

Mount 6ES7541-1AB01-0AB0 on the SIMATIC S7-1500 mounting rail. The module width is 35 mm, with a height of 147 mm and depth of 127 mm.

Engineering

The module is configurable in STEP 7 TIA Portal from V21.1 and can also be integrated using the Siemens GSDML V2.42 description where applicable.

Commissioning checks

Verify the 15-pin D-sub pin assignment, interface mode, baud rate, telegram format and protocol role before enabling communication. Confirm termination and shielding for the selected RS-422 or RS-485 topology.

Environment

Operating environment

Horizontal installation: -30 to 60 C. Vertical installation: -30 to 40 C. Installation altitude is up to 5,000 m, with restrictions above 2,000 m.

Diagnostics and isolation

Diagnostic alarms and wire-break diagnostics are supported. Isolation between the backplane bus and serial interface is tested at 707 V DC.

Approvals

The official Siemens data sheet lists CE, UKCA, UL, RCM, KC, ATEX, IECEx and multiple maritime approvals. Confirm the required regional approval against the exact delivery documentation.

FAQ

1. How can a buyer verify that the quotation is for the exact complete model?

Require the quotation, label photo and Siemens data sheet to show 6ES7541-1AB01-0AB0 in full. Confirm that the description states CM PtP RS422/485 HF, a 15-pin D-sub socket and support for serial protocols up to 250 kbit/s.

2. How can New, Used and Refurbished condition be distinguished?

Ask for current photos of the housing, terminal area, label and packaging. A new unit should not show mounting marks, connector wear or altered labels; used or refurbished stock may show handling, rail or D-sub connection marks and should be declared clearly.

3. How should a purchaser check whether the supplier is legitimate and reliable?

Verify the supplier legal name, registration, business address, payment beneficiary and traceable company contact details. Request a written quotation that identifies Siemens 6ES7541-1AB01-0AB0 and states the declared condition and supplied accessories.

4. Which specifications should an engineer verify before purchase?

Check S7-1500 compatibility, STEP 7 engineering version, RS-422 or RS-485 topology, 15-pin D-sub wiring, protocol role, maximum data rate, cable length and the 35 x 147 x 127 mm installation envelope.

5. What physical evidence should be requested before payment?

Request dated photos or video showing the full Siemens label, complete part number 6ES7541-1AB01-0AB0, housing, D-sub interface and packaging. Ask for serial or traceability details and confirmation that the quoted unit matches the photographed item.

6. Can a similar suffix or another CM PtP module replace this model?

Do not assume interchangeability. A different suffix may change hardware status, supported interface, protocol capability or engineering requirements. Replacement is acceptable only after the project engineer confirms the exact electrical, mechanical and software compatibility.

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