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Entry type: FAQ Entry ID: 109755296, Entry date: 02/07/2018
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Which pre-conditions are needed to establish a connection via Open User Communication with S7-1200 CPs?

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Open User Communication is a designation for a software-driven communication procedure for communication via the integrated PN/IE interface of the S7-1200/S7-1500 and S7-300/S7-400 CPUs as well as via the CMs/CPs of the S7-1200/S7-1500.

There are different connection types available for these communication procedures.

  • ISO-on-TCP
  • TCP
  • UDP

A salient feature of the Open User Communication is its high flexibility in the transfer of data structures and it thus permits open data exchange with all sorts of communication partners as long as they support the communication types made available here. Since the communication is controlled exclusively via the instructions in the user program it is possible to have event-controlled establishment and disconnection of connections. Furthermore, connections can be modified during runtime using the user program.

The following CPs of the S7-1200 support the use of instructions for Open User Communication.
 

CPArticle numberFirmware version
CP 1243-16GK7243-1BX30-0XE0

Firmware V2.1.51 and higher

Delivery release: 109482524

CP 1242-7 GPRS V26GK7242-7KX31-0XE0

Firmware V2.1.41 and higher

Delivery release: 109479013

CP 1243-7 LTE6GK7243-7KX30-0XE0
6GK7243-7SX30-0XE0

Firmware V2.1.41 and higher

Delivery release: 109479013

CP 1243-8 IRC
6GK7243-8RX30-0XE0

Firmware V2.1.41 and higher

Sales release: 109477890 

Table 1

You need an S7-1200 CPU firmware version V4.1 or higher to operate the CPs listed in Table 1. Configuration is possible with STEP 7 V13 SP1 and higher.

If you use STEP 7 V13 SP1 to configure the CP 1243-1 V2.1, you also need the Hardware Support Package HSP0170.

If you use STEP 7 V13 SP1 to configure the CP 1243-8 IRC V2.1, you also need the Hardware Support Package HSP0111.

The HSPs are available in Entry 72341852.

Basic examples of Open User Communication are available in Entry 109747710

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