Entry type: Product note, Entry ID: 67763217, Entry date: 02/27/2013
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Delivery Release for S7-1500 Point-to-Point, USS and Modbus RTU Communications Modules

  • Entry
  • Associated product(s)
 These 4 communications modules (CM) for the S7-1500 and ET 200MP systems for serial connections and communication with diverse partners are herewith released for delivery.
The modules come in two performance classes and each has one serial interface (RS232 or RS422/485). All modules support the protocols Freeport, 3964(R) and USS. The high feature modules additionally support Modbus RTU.

Overview

The SIMATIC S7-1500 has been designed for use in many different industries and applications. Several communications modules (CM) are available for the communication with components outside the SIMATIC spectrum. They provide the necessary interfaces and the required protocol support and enable the user to easily and flexibly build the necessary connections to the respective components.

Four different modules are available which together cover nearly all applications.

There are two performance classes for each physical version (RS232 and RS422/485) that differ in transmission speed, quantity structure and the supported protocols.

The programming interface (instructions) and the assignment in the I/O data is the same for all modules.

Common functions

The following functions are identical in all modules:

  • Interface parameters
  • Setting of the communication parameters in Hardware-Config.
  • Selection of the character frame with 7 or 8 data bits, as well as 1 or 2 stop bits
  • Optional adaptation of the communication parameters by means of instructions from the user program
  • Freeport protocol (ASCII)
  • Flexible adaptation the start and end criteria of message frames for universal adjustment to the most different partners
  • Flexible data flow control with HW or SW for adjustment to components with different performance
  • Receive buffer for intermediate storage and decoupling from the controller cycle
  • 3964(R) Protocol
  • Automatic processing of the 3964(R) protocol on the module
  • Adjustable protocol parameters, e.g. priority, repetition trials or delay times
  • With or without block check
  • USS
  • Automatic processing of the USS protocol by means of instructions in the CPU
  • For up to 16 axes
  • Modbus RTU (only High Feature versions)
  • Master or slave
  • Up to 30 slaves on one master
  • Extended addressing with possible addresses up to 65 535

Instructions in Step 7 enable easy integration into the user program for controlling the data exchange.

Physical interfaces

The RS232 interface is suitable for full-duplex point-to-point connections. It comes with the additional auxiliary signals RTS, CTS, DTR, DSR, RI and DCD for controlling the data flow and the connection establishment between the communication partners.

The version for RS422/485 can be used in the RS422 mode for four-wire full-duplex connections. The RS485 mode enables a two-wire half-duplex connection or a bus operation with several participants. The data transfer by means of differential voltage signals enables longer cable lengths than RS232.

Differences between the modules

Feature CM PtP
RS232 BA
CM PtP
RS232 HF
CM PtP
RS422/485 BA
CM PtP
RS422/485  HF
Number of interfaces 1 1 1 1
RS232 yes yes - -
RS485 - - yes yes
RS422 - - yes yes

Type of connection on the module

Sub-D, 9-pole, male

Sub-D, 9-pole, male

Sub-D
15-pole female

Sub-D
15-pole female

Max. transmission rate bit/s

19 200

115 200

19 200

115 200

Max. message frame length kByte

1

4

1

4

Message frame buffer kByte

2

8

2

8

Freeport

yes

yes

yes

yes

3964(R)

yes

yes

yes

yes

USS (via instructions)

yes

yes

yes

yes

Modbus RTU (requires instructions)

-

yes

-

yes

Applications

The modules enable the implementation of universal communication connections in many different applications, e.g. connection of:

  • Barcode readers
  • 2D Data Matrix readers
  • Scales
  • Serial modems
  • Existing control systems
  • Process control devices that can only be connected via Modbus RTU

Types of connection

The modules have one Sub-D connector. The preassembled cables that are already available for the corresponding modules from the SIMATIC S7-300 and S7-400 systems can be used for connection here as well.

S7-1500 System integration

The modules are fully integrated in the Step 7 V12 ( TIA-Portal) and require no additional optional packages. They are controlled from the user program by means of instructions.
More information on Step 7 V12, as well as the forms of delivery and system requirements, can be found in the relevant delivery release, see entry ID 67851956
More information on the system S7-1500 can be found in the relevant delivery release, see entry ID 67856446

Application in the ET 200MP distributed I/O system

The communications modules can be employed in the ET 200MP I/O system without any restrictions and provide all the benefits of this system.
The protocols Freeport and 3964(R) can be used with any Profinet IO Controller, the protocols USS and Modbus RTU require instructions in SIMATIC S7-300/400 or S7-1500.

Alternatively the modules can also be controlled with third party controllers via standard mechanisms such as input/output data and data records. A detailed description can be found in the function manual "CM PtP operation with PROFINET controller"

For more information please read the delivery release for ET 200MP at entry ID 67885422.

TIA Selection Tool:

At the time of the delivery release of SIMATIC ET 200MP a new version of the SIMATIC Selection Tool will be available which will permit a faster and simpler configuration, plus the generation of a parts list. Starting march 2013 this tool is available as a free download on www.siemens.com/tia-selection-tool

Documentation:

The documentation of the SIMATIC ET 200MP comes in a modular form. It consists of various documents which provide instructions, contain reference information or explain functions independent of the product.
The documentation comprises the following:

  • System manual S7-1500 and ET 200MP (includes information on the whole system)
  • Topic-oriented function manuals (general assembly guidelines, functions and parameters for communication, etc.)
  • Device manuals with the respective descriptions of the modules

Support with the configuration and programming of SIMATIC ET 200MP is also provided by the information system in the TIA-Portal (online help system).

System Manuals

System 

Entry ID

S7-1500 Automation system 59191792
ET 200MP distributed I/O system 59193214

Function manuals

Function 

Entry ID

Communication modules CM PtP - Configurations for point‑to‑point connections 59057093
Communication modules CM PtP - operation with PROFINET controller 59062563

Device Manuals

Device 

Entry ID

Communication module CM PtP RS232 BA  59057152
Communication module CM PtP RS232 HF 59057160
Communication module CM PtP RS422/485 BA  59057390
Communication module CM PtP RS422/485 HF  59061372

More manuals for S7-1500 and the TIA-Portal are available on the Customer Support pages:
http://support.automation.siemens.com

 

Ordering data

Type 

Order Number

CM PtP RS232 BA

Communication module with RS232 interface (Freeport, 3964(R), USS); 9-pin D-sub male connector, 19.2 kbps

6ES7 540-1AD00-0AA0
CM PtP RS422/485 BA

Communication module with RS422/485 interface (Freeport, 3964(R), USS); 15-pin D-sub female connector, 19.2 kbps

6ES7 540-1AB00-0AA0
CM PtP RS232 HF

Communications module with RS232 interface (Freeport, 3964(R), USS, Modbus); 9-pin D-sub male connector, 115.2 kbps

6ES7 541-1AD00-0AB0
CM PtP RS422/485 HF

Communications module with RS422/485 interface (Freeport, 3964(R), USS, Modbus); 15-pin D-sub female connector, 115.2 kbps

6ES7 541-1AB00-0AB0

Accessories

Type 

Order Number

S7 Cable RS232 - RS232, 5m

Cable for point to point connections RS232 - RS232 9-pole submin. D sockets, length 5m

6ES7 902-1AB00-0AA0
S7 Cable RS232 - RS232, 10m

Cable for point to point connections RS232 - RS232 9-pole submin. D sockets, length 10m

6ES7 902-1AC00-0AA0
S7 Cable RS232 - RS232, 15m

Cable for point to point connections RS232 - RS232 9-pole submin. D sockets, length 15m

6ES7 902-1AD00-0AA0
S7 Cable RS422 - RS422, 5m

Cable for point to point connections RS422 - RS422 15-pole submin. D pins, length 5m

6ES7 902-3AB00-0AA0
S7 Cable RS422 - RS422, 10m

Cable for point to point connections RS422 - RS422 15-pole submin. D pins, length 10m

6ES7 902-1AC00-0AA0
S7 Cable RS422 - RS422, 50m

Cable for point to point connections RS422 - RS422 15-pole submin. D pins, length 50m

6ES7 902-1AG00-0AA0

You will find more information under the following links:

Internet website for SIMATIC S7-1500 and SIMATIC ET 200MP with general information:
http://www.siemens.com/s7-1500
http://www.siemens.com/et200mp

For further questions please speak to your partner at your local Siemens branch office:
Siemens Partners on the Internet