About-S7-1200-PLC

PROFINET interface of SIMATIC S7-1200 PLC

PROFINET interface

The integral PROFINET interface permits communication with:

  • Programming device
  • HMI devices
  • Other SIMATIC controllers
  • PROFINET?IO automation components

The following protocols are supported:

  • TCP/IP
  • ISO-on-TCP
  • S7 communication

The following can be connected:

  • Field PG programming device and PCs via standard CAT5 cable.


Connection between PG and CPU of SIMATIC S7-1200

  • SIMATIC HMI Basic Panels


Connection between Basic Panel and CPU of SIMATIC S7-1200

  • Further SIMATIC S7-1200 controllers


Connection of several devices via CSM 1277 Ethernet switch
Point-to-point interface, freely-programmable interface mode
Communication modules permit communication via point-to-point connections. The RS 232 and RS 485 physical transmission media are used. Data transmission is carried out in the “Freeport” mode of the CPU. A user-specific, bit-oriented communication protocol is used (e.g. ASCII protocol, USS, or Modbus).
Any terminal equipment with a serial interface can be connected, e.g. drives, printers, bar code readers, modems, etc.

Point-to-point connection via CM 1241 in programmable interface mode

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