The SIMATIC S7-1200 family consists of the following modules:

• Compact controllers with graded performances in different versions as wide-range AC or DC controllers.
• Signal boards (analog and digital) for low-cost modular controller expansion directly on the CPU, with retention of the mounting space.
• Different digital and analog signal modules.
• Different communication modules and processors.
• Ethernet switch with 4 ports for implementation of many different network topologies
• SIWAREX weighing systems terminal module
• PS 1207 stabilized power supply units, line voltage 115/230 V AC, rated voltage 24 V DC

Mechanical features

• Easy mounting of the modules on a standard DIN rail or in a control panel
• Rugged, compact plastic enclosure
• Easily accessible connection and control elements, protected by front flaps
• Removable connection terminals, also for analog or digital expansion modules

Device features

• International standards:
  SIMATIC S7-1200 complies with the standards according to VDE, UL, CSA and FM (Class I, Category 2; Danger zone groups A, B, C and D, T4A). The quality management system used during production is certified according to ISO 9001.

Communication

The SIMATIC S7-1200 is equipped with different communication mechanisms:

• Integrated PROFINET IO Controller interface
• Communication module with PROFIBUS DP master interface
• Communication module with PROFIBUS DP slave interface
• GPRS module for connection to GSM/G mobile phone networks
• LTE module for communication in mobile phone networks of the fourth LTE generation (Long Term Evolution).
• Communications processor for connection to TeleControl Server Basic control center software control center software via Ethernet, and for safe communication via IP-based networks.
• Communications processor for connection to control centers for telecontrol applications.
• RF120C for connection to SIMATIC Ident systems.
• Module SM1278 for connecting IO-Link sensors and actuators.
• Point-to-point connection via communication modules.

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