Siemens

S7 Family

The Ewon IO server S73&400 has been designed to communicate with Siemens PLC (such as S7-300, 400, 1200 or 1500) but also VIPA PLC using either the MPI or the Ethernet (ISOTCP) port.

The Ewon IO server S7200 is dedicated to communicating directly with Siemens PLC of family S7-200.

An Ewon Flexy with MPI/Profibus interface is required to connect directly to the MPI/Profibus interface of the PLC.

To perform a remote maintenance on an Operator Panel, the Ethernet interface of the OP or the Ewon VCOM solution must be used.

More information about the S73&400 or the S7200 IO servers can be found in the Reference Guide: IO Servers available in the Resources section, down below.

S7-1200 / 1500 Specifics

This type of PLC is an Ethernet only which is fully compatible* with the Flexy.

Data polling will be done whatever the Ewon type (no need for an MPI port) through ISOTCP protocol from the S73&400 IO server. You will be able to poll Input (I), Output (Q), Internal Memory (M) and data blocks (DB). Timer and counter are not available because they are addressed as an instance data block in the PLC. 

As the remote maintenance is done through Ethernet, the Ewon Flexy will be used as a standard Ethernet router.

S7-300 / 400 Specifics

An Ewon Flexy linked to an S7-300 / 400 Siemens PLC will be using the “S73&400” IO server.

S7-200 Specifics

Using the S7200 IO server, the Ewon Flexy will connect directly to the PLC’s PPI interface.

On a PPI Network, an Ewon Flexy with a serial interface acts as a monoMaster, it must be the only device acting as master on the network. However, an Ewon Flexy with an MPI port is able to communicate on a PPI multiMaster bus.

S5

The IO server S5-AS511 communicates via the front programming port using AS511 protocol**.

Pay attention that this AS511 protocol is specific for each Siemens device.

Resources