The 6GK7343-1EX30-0XE0: The module has an unmanaged switch inside — don't expect VLANs or SNMP write access — but it does support PROFINET IRT (isochronous real-time) on that switch, which is what matters for drives and motion control. Configuration is done through STEP 7 V5.4 SP2 or higher, or TIA Portal V11. The first interface runs 10/100 Mbit/s, so plan your backbone accordingly. Ring redundancy is hardware-based, not managed-switch RSTP, so it works with other PROFINET devices in a ring. Security basics are covered: IP-based ACL (but not for PLC/routing), MIB support for SNMP monitoring, and lock-down of non-required services. No login logging, though.
Siemens 6GK7343-1EX30-0XE0 CP 343-1 PROFINET, Ring Redundanc
MPN6GK7343-1EX30-0XE0
Siemens CP 343-1, 6GK7343-1EX30-0XE0, compact S7-300 PROFINET controller with integrated 2-port switch, DCP, NTP, LLDP, ring redundancy, IP20.
$979.00 – $1,047.75Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| TCP/IP support | Yes |
| Parameter | Value |
|---|---|
| IP protection degree | IP20 |
| Storage temperature range | -40 ... +70 °C |
| Transport temperature range | -40 ... +70 °C |
| Parameter | Value |
|---|---|
| Width | 40 mm |
| Height | 125 mm |
| Depth | 120 mm |
Product details
Frequently asked questions
Does the module support DCP?
Yes, DCP (Discovery and Configuration Protocol) is supported, allowing IP address assignment and device identification on PROFINET.
Does it support NTP?
Yes, NTP client is supported for time synchronization across the network.
Can it be used in a ring topology?
Yes, ring redundancy is supported, so it can participate in a PROFINET ring for failover without an external managed switch.
MPN
6GK7343-1EX30-0XE0