Brand :
SiemensThe 6GK7443-1EX30-0XE0 is a communication processor (model CP 443-1) from Siemens' SIMATIC NET series, specifically designed for S7-400 series PLCs to connect to industrial Ethernet.
It features two 10/100 Mbit/s RJ45 interfaces and built-in industrial Ethernet switching functionality, supporting connections of the S7-400 to PROFINET IO controllers or as intelligent devices. This module supports multiple communication protocols and is a key component in building factory automation networks.

| Brand |
SIEMENS |
| Model / Part Number | 6GK7443-1EX30-0XE0 |
| Transmission Rate | 10/100 Mbit/s |
| Number and Type of Interfaces | 2 x RJ45 (Industrial Ethernet Switch) |
| Power Supply | Powered via S7-400 backplane bus (DC 5V) |
| Current Consumption | Typical 1.4 A |
| Power Dissipation | Typical 7.25 W |
| Dimensions (W x H x D) | 25 mm x 290 mm x 210 mm |
| Protection Rating | IP20 |
| PROFINET IO Devices | Max 128 |
| S7 Connections | Max 128 |
| Open Communication Connections | Max 64 |
| Operating Temperature | 0°C to 60°C |
Q: In which application scenarios can this module be used?
A: It is mainly used in scenarios where an S7-400 PLC needs to be connected to an upper-level industrial Ethernet or PROFINET network, such as serving as a communication hub between the control layer and field devices (such as remote I/O, drives, HMIs) in a factory automation production line. In practical cases, engineers have used it to solve the problem of accessing lower-level drive devices through the S7-400.
Q: What should be noted when using this module as a PROFINET IO controller?
A: First, each S7-400 CPU can be configured with a maximum of 14 CP modules, but as a PN IO controller, a maximum of 4 are allowed. Second, it has requirements for the CPU firmware version; it needs to be used with a CPU with firmware V4.1 or higher.
Q: Can the old model CP 443-1 be directly replaced by this new model?
A: Yes. The 6GK7443-1EX30-0XE0 is designed as an upgrade replacement for the older CP 443-1 (such as the 6GK7443-1EX20-0XE0), but note that the firmware version of the upgraded CPU must be V4.1 or higher.
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