6GK7443-1EX11-0XE0 - Communication Processor - SIEMENS

The CP 443-1 communications processor is designed for operation in an S7-400 (standard) and S7-400H (fault-tolerant system) programmable logic controller. It allows the S7-400 / S7-400H to be attached to Industrial Ethernet.

The CP 443-1 supports the following communication services:

S7 communication with
- PG functions
- Operator monitoring and control functions
- Data exchange on S7 connections (fault-tolerant S7 connections also possible)

S5-compatible communication with

- SEND/RECEIVE interface via ISO transport connections
- SEND/RECEIVE interface via ISO-on-TCP and UDP connections
- SEND/RECEIVE interface via TCP connections
- With the SEND/RECEIVE interface via TCP connections, the CP 443-1 supports the socket interface to TCP/IP available on practically every end system.
- Multicast over UDP connection
The multicast mode is made possible by selecting a suitable IP address when configuring connections.
- FETCH/WRITE services (server; corresponding to S5 protocol) via ISO transport connections, ISO-on-TCP connections and TCP connections
Here, the SIMATIC S7-400 with the CP 443-1 is always the server (passive connection establishment) while the fetch or write access (client function with active connection establishment) is always initiated by a SIMATIC S5 or a device from another range.
- LOCK/UNLOCK with FETCH/WRITE services (depending on the CPU)

Time-of-day synchronization over Industrial Ethernet according to the following defined procedure:

- SIMATIC mode
The CP receives MMS time-of-day messages and synchronizes its local time;
or
- NTP mode (NTP: Network Time Protocol)
The CP sends time queries to an NTP server at regular intervals.

- Can be addressed using a factory-set MAC address
The CP can be reached using the factory-set MAC address to allow IP address assignment; the CP supports the PST function (Primary Setup Tool).