Skip to main content
Log in
Siemens 6ES7540-1AD01-0AA0 — PLC Communication Modules

Siemens 6ES7540-1AD01-0AA0 CM PtP RS232 BA, Active

MPN6ES7540-1AD01-0AA0
Active

Siemens SIMATIC S7-1500, CM PtP RS232 BA communications module for serial connection RS-232, freeport/3964(R)/USS, 19200 bit/s, 9-pin D-sub plug, RoHS compliant.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6ES7540-1AD01-0AA0 — Specifications
ParameterValue
Group codeR135
Product group4502
Product classA: Standard product which is a stock item could be returned within the returns guidelines/period.
SeriesCM PtP
Export control regulationsAL : N / ECCN : 9N9999
Compliance with the substance restrictions according to RoHS directiveSince: 13-09-24

Product details

The Siemens 6ES7540-1AD01-0AA0 is an active-production CM PtP RS232 BA module for the S7-1500 platform. It provides one RS-232 serial port on a 9-pin D-sub, supporting freeport, 3964(R), and USS protocols at a maximum of 19200 bit/s. That baud rate is fixed for the protocol modes – match it to your downstream device before specifying the BOM line. The module plugs directly into the S7-1500 backplane and is powered from the backplane bus. The 9-pin D-sub is pinned per standard RS-232; standard straight-through cables work.

Integration notes

Spring-cage terminals are not used – the RS-232 port is a fixed 9-pin D-sub. Strip length and termination are per standard RS-232 practice: shield grounded at the panel end only. The module is hot-swappable in S7-1500 racks; no power down is needed for replacement. Protocol selection (freeport, 3964(R), USS) and baud rate (19200 bit/s) are configured in TIA Portal. This module uses RS-232 on a 9-pin D-sub.

Frequently asked questions

What protocols and baud rate does this module support?

It supports freeport, 3964(R), and USS protocols, all at 19200 bit/s via RS-232 on a 9-pin D-sub connector.

MPN
6ES7540-1AD01-0AA0