Brand :
SiemensThe 6GK7443-1EX30-0XE0 is a Siemens SIMATIC NET series CP 443-1 communication processor designed for S7-400 PLCs, used for connecting to industrial Ethernet.
It features two 10/100 Mbit/s RJ45 ports (integrated switch), supporting PROFINET IO controllers, S7 communication, and open communication (SEND/RECEIVE). This module includes S7 routing, IP access control lists, clock synchronization, and extended Web diagnostics, and supports the PROFIenergy energy-saving protocol, making it suitable for medium to large-scale automation control systems.

| Brand |
SIEMENS |
| Model / Part Number | 6GK7443-1EX30-0XE0 |
| Transmission Rate | 10/100 Mbit/s |
| Interfaces | 2 RJ45 ports (Industrial Ethernet Switch) |
| Supply Voltage | 5V DC (from backplane bus) |
| Current Consumption | Typical 1.4 A |
| Power Consumption | 7.25 W |
| Supported Modules | Up to 14 per CPU, including up to 4 as PN IO controllers |
| S7 Connections | Maximum 128 |
| Protection Rating | IP20 |
| Dimensions | 25 x 290 x 210 mm |
| Operating Temperature | 0°C to 60°C |
Q: Does this module support the Modbus TCP protocol?
A: Yes, but there are firmware version limitations. This module supports Modbus TCP in versions V3.0 and higher, but note that version V3.2.9 does not support port 502; you need to upgrade the firmware to version 3.2.12 or higher for it to work properly.
Q: What should I do if I encounter a "Hardware offline/online mismatch" alarm when using this module?
A: This is usually caused by a mismatch between the firmware version and the hardware configuration. A common solution is to set the firmware version of CP 443-1 in the STEP 7 hardware configuration to match the actual firmware of the module (which can be checked on the module casing or read online).
Q: Which CPUs can be used with this module? Can older models be upgraded?
A: This module only supports S7-400 CPUs with firmware V4.1 and above. Early CP 443-1 processors (such as 6GK7443-1EX20) can be upgraded to this model, provided that the CPU firmware version used is V4.1 or higher. If the CPU firmware is V4.0 or lower, the CPU firmware must be upgraded first.
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