Home Programmable Logic Controller (PLC) Siemens CM PTP Serial Interface

Siemens CM PTP Serial Interface

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Siemens CM PTP Serial Interface
Manufacturer: Siemens

The standard BaseUnits of the ET 200SP are available for connection. The individual signals of the serial connection are connected with appropriate terminals.

A light BaseUnit opens a new load group. The power supply must be fed in via this BaseUnit. The first BaseUnit next to the interface module must always be a light BaseUnit.

A dark BaseUnit forwards the power supply of the adjacent light BaseUnit on the left via self-assembling voltage buses. A new infeed is therefore only required on the next light BaseUnit to the right.

All variants that correspond to BaseUnit type A0 can be used as BaseUnits.

For a space-saving and EMC technically optimized connection of cable shields, a shield connection is available that is quick and easy to mount. This consists of one shield connection element that can be plugged onto the BaseUnit and one shield terminal for each module. The low-impedance connection to the functional ground (DIN rail) is carried out by the user and requires no additional wiring.

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Features Applications Model
  • CM PtP communication module; module for serial communication connections with RS232 and RS422 interfaces. RS485 for the Freeport, 3964(R), Modbus RTU, and USS protocols, max. 115.2 kbit/s, 2 KB frame length, 4 KB receive buffer.
  • Protocols supported
  • Freeport: User-parameterizable frame format for universal communication
  • 3964(R) for improved transmission reliability
  • Modbus RTU master (requires instructions in SIMATIC S7)
  • Modbus RTU slave (requires instructions in SIMATIC S7)
  • USS, implemented through instructions
  • Interface properties
  • RS232 with auxiliary signals
  • RS422 for full-duplex connections
  • RS485 for half-duplex and multi-point connections
  • Transmission rates from 300 to 115200 bit/s
  • Can be plugged into Type A0 BaseUnits (BU) with automatic coding
  • LED display for errors, operation, and supply voltage
  • Communication display for sending and receiving
  • Clear labeling on front of module
  • Plain text identification of the module type and function class
  • 2D matrix code (order and serial number)
  • Connection diagram
  • Color coding of the CM module type: Silver
  • Hardware and firmware version
  • Communication modules connect the controller with an external communication partner to exchange data.
  • Comprehensive parameterization options make it possible to adapt the controller flexibly to the communication partner.
  • Modbus RTU master creates a Modbus RTU network for up to 30 Modbus slaves.
Mfr. Part No. Description
6ES7137-6AA00-0BA0 ET 200SP, CM PTP

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