How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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The Siemens CP 443-1 Advanced (6GK7443-1GX30-0XE0) is a communications processor that connects a SIMATIC S7-400 CPU to Industrial Ethernet with one Gigabit RJ45 port and a 4-port 10/100 Mbit/s integrated switch, operating as a PROFINET IO controller for up to 128 IO devices with IRT support. It adds S7 routing, IP access control lists, and FTP/email/web server functions, drawing 1.8 A typical from the backplane bus.
The 4-port switch plus a separate Gigabit uplink let this CP terminate a local PROFINET IO line on the integrated switch while carrying backbone traffic over the Gigabit port, and up to 4 units per S7-400 CPU can each run as an independent PROFINET IO controller for 128 devices. Select it over a Lean or non-Advanced CP 443 when the station needs Gigabit backbone speed, VPN/firewall security, or multiple parallel PROFINET IO controller instances on the same rack.
Fits S7-400 stations that need a marine-classified PROFINET IO controller (ABS, BV, CCS, DNV, LRS, NK approvals) for process and marine automation, plus FTP, email, and web-based diagnostics for plant-wide integration.
| product type designation | CP 443-1 Advanced Communications processor CP 443-1 Advanced 1x 10/100/1000 Mbps, 4x 10/100 Mbps (IE switch) RJ45 ports; ISO; TCP; UDP; PROFINET IO controller; S7 communication; Open communication (send/receive) S7 routing; IP configuration via DHCP/block; IP access control list; time-of-day synchronization; extended web diagnostics; Fast Startup; PROFIenergy support; IP routing; FTP; Web server; email; please note SIOS ID: 109799025 |
|---|---|
| product brand name | SIMATIC NET |
| transfer rate: at the 1st interface | 10 ... 1000 Mbit/s |
|---|---|
| transfer rate: at the 2nd interface | 10 ... 100 Mbit/s |
| number of interfaces / according to Industrial Ethernet | 5 |
|---|---|
| number of electrical connections: at the 1st interface / according to Industrial Ethernet | 1 |
| number of electrical connections: at the 2nd interface / according to Industrial Ethernet | 4 |
| type of electrical connection: at the 1st interface / according to Industrial Ethernet | RJ45 port |
| type of electrical connection: at the 2nd interface / according to Industrial Ethernet | RJ45 port |
| design of the removable storage: C-PLUG | Yes |
| Part number | 6GK7443-1GX30-0XE0 |
|---|---|
| Type designation | CP 443-1 Advanced Communications processor CP 443-1 Advanced 1x 10/100/1000 Mbps, 4x 10/100 Mbps (IE switch) RJ45 ports; ISO; TCP; UDP; PROFINET IO controller; S7 communication; Open communication (send/receive) S7 routing; IP configuration via DHCP/block; IP access control list; time-of-day synchronization; extended web diagnostics; Fast Startup; PROFIenergy support; IP routing; FTP; Web server; email; please note SIOS ID: 109799025 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4019169206693 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
| type of voltage / of the supply voltage | DC |
|---|---|
| supply voltage / 1 / from backplane bus | 5 V |
| relative symmetrical tolerance / at DC: at 5 V | 5% |
| consumed current: from backplane bus / at DC / at 5 V / typical | 1.8 A |
| power loss [W] | 9 W |
| ambient temperature: during operation | 0 ... 60 °C |
|---|---|
| ambient temperature: during storage | -40 ... +70 °C |
| ambient temperature: during transport | -40 ... +70 °C |
| relative humidity: at 25 °C / without condensation / during operation / maximum | 95 % |
| protection class IP | IP20 |
| module format | Compact module S7-400 single width |
|---|---|
| width | 25 mm |
| height | 290 mm |
| depth | 210 mm |
| number of units: per CPU / maximum | 14 |
|---|---|
| number of units: note | max. 4 as PN IO ctrl. |
| number of possible connections / for open communication / by means of SEND/RECEIVE blocks / maximum | 64 |
|---|---|
| data volume: as user data per ISO connection / for open communication / by means of SEND/RECEIVE blocks / maximum | 8 Kibyte |
| data volume: as user data per ISO on TCP connection / for open communication / by means of SEND/RECEIVE blocks / maximum | 8 Kibyte |
| data volume: as user data per TCP connection / for open communication / by means of SEND/RECEIVE blocks / maximum | 8 Kibyte |
| data volume: as user data per UDP connection / for open IE communication / by means of SEND/RECEIVE blocks / maximum | 2 Kibyte |
| number of possible connections / for S7 communication: maximum | 128; when using several CPUs |
|---|---|
| number of possible connections / for S7 communication: with PG connections / maximum | 2 |
| number of active connections / with multi-protocol mode | 128 |
|---|
| number of possible connections: as client / by means of FTP / maximum | 20 |
|---|---|
| number of possible connections: as server / by means of FTP / maximum | 10 |
| number of possible connections: as server / by means of HTTP / maximum | 4 |
| number of possible connections: as email client / maximum | 1 |
| data volume / as user data for email / maximum | 8 Kibyte |
| storage capacity / of the user memory: as flash memory file system | 30 Mibyte |
| storage capacity / of the user memory: as RAM | 16 Mibyte |
| storage capacity / of the user memory: additionally buffered as RAM via central backup battery | 512 Kibyte |
| number of possible write cycles / of the flash memory cells | 100000 |
| product function / PROFINET IO controller | Yes |
|---|---|
| number of PN IO devices / on PROFINET IO controller / operable / total | 128 |
| number of PN IO IRT devices / on PROFINET IO controller / operable | 64 |
| number of external PN IO lines / with PROFINET / per rack | 4 |
| data volume: as user data for input variables / as PROFINET IO controller / maximum | 4 Kibyte |
| data volume: as user data for output variables / as PROFINET IO controller / maximum | 4 Kibyte |
| data volume: as user data for input variables per PN IO device / as PROFINET IO controller / maximum | 1433 byte |
| data volume: as user data for output variables per PN IO device / as PROFINET IO controller / maximum | 1433 byte |
| product function / MIB support | Yes |
|---|---|
| protocol / is supported: SNMP v1 | Yes |
| protocol / is supported: SNMP v3 | Yes |
| protocol / is supported: DCP | Yes |
| protocol / is supported: LLDP | Yes |
| configuration software: required | STEP 7 V5.5 SP3 or higher / STEP 7 Professional V12 (TIA Portal) or higher |
| product function / is supported / identification link | Yes; acc. to IEC 61406-1:2022 |
| product function / web-based diagnostics | Yes |
|---|
| product feature / switch | Yes |
|---|---|
| product function: switch-managed | No |
| product function: with IRT / PROFINET IO switch | Yes |
| product function: configuration with STEP 7 | Yes |
| product function: ring redundancy | Yes |
|---|---|
| product function: redundancy manager | Yes |
| protocol / is supported / Media Redundancy Protocol (MRP) | Yes |
| firewall version | stateful inspection |
|---|---|
| product function / with VPN connection | IPSec |
| type of encryption algorithms / with VPN connection | AES-256, AES-192, AES-128, 3DES-168, DES-56 |
| type of authentication procedure / with VPN connection | Preshared key (PSK), X.509v3 certificates |
| type of hashing algorithms / with VPN connection | MD5, SHA-1 |
| number of possible connections / with VPN connection | 32 |
| product function: password protection for Web applications | Yes |
| product function: ACL - IP-based | Yes |
| product function: ACL - IP-based for PLC/routing | Yes |
| product function: switch-off of non-required services | Yes |
| product function: blocking of communication via physical ports | Yes |
| product function: log file for unauthorized access | No |
| product function / SICLOCK support | Yes |
|---|---|
| product function / pass on time synchronization | Yes |
| protocol / is supported: NTP | Yes |
| certificate of suitability / CE marking | Yes |
|---|---|
| certificate of suitability / UKCA marking | Yes |
| certificate of suitability / cULus approval | Yes |
| certificate of suitability / KC approval | Yes |
| certificate of suitability / Regulatory Compliance Mark (RCM) | Yes |
| certificate of suitability / RoHS conformity | Yes |
| certificate of suitability / EAC approval | Yes |
| certificate of suitability / ATEX | Yes |
|---|---|
| certificate of suitability / IECEx | Yes |
| certificate of suitability / ULhazloc approval | Yes |
| certificate of suitability / CCC / for hazardous zone according to GB standard | Yes |
| certificate of suitability / FM registration | Yes |
| Marine classification association / American Bureau of Shipping | Yes |
|---|
| Marine classification association / French marine classification society (BV) | Yes |
|---|---|
| Marine classification association / Chinese Classification | Yes |
| Marine classification association / Det Norske Veritas (DNV) | Yes |
|---|---|
| Marine classification association / Lloyds Register of Shipping | Yes |
| Marine classification association / Nippon Kaiji Kyokai (NK) | Yes |
|---|
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 350.22 kg |
| global warming potential [CO2 eq]: during manufacturing | 65.61 kg |
| global warming potential [CO2 eq]: during operation | 281.89 kg |
| global warming potential [CO2 eq]: after end of life | 2.72 kg |
| Net weight | 0.867 kg |
|---|---|
| Package dimensions | 129 × 35 × 142 mm |
| Country of origin | DE |
| Shipping weight | 1.367 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe tariff (HS) code on file for CP 443-1 Advanced Communications processor CP 443-1 Advanced 1x 10/100/1000 Mbps, 4x 10/100 Mbps (IE switch) RJ45 ports; ISO; TCP; UDP; PROFINET IO controller; S7 communication; Open communication (send/receive) S7 routing; IP configuration via DHCP/block; IP access control list; time-of-day synchronization; extended web diagnostics; Fast Startup; PROFIenergy support; IP routing; FTP; Web server; email; please note SIOS ID: 109799025 is 85176200.
The EAN (GTIN) of CP 443-1 Advanced Communications processor CP 443-1 Advanced 1x 10/100/1000 Mbps, 4x 10/100 Mbps (IE switch) RJ45 ports; ISO; TCP; UDP; PROFINET IO controller; S7 communication; Open communication (send/receive) S7 routing; IP configuration via DHCP/block; IP access control list; time-of-day synchronization; extended web diagnostics; Fast Startup; PROFIenergy support; IP routing; FTP; Web server; email; please note SIOS ID: 109799025 is 4019169206693.
CP 443-1 Advanced Communications processor CP 443-1 Advanced 1x 10/100/1000 Mbps, 4x 10/100 Mbps (IE switch) RJ45 ports; ISO; TCP; UDP; PROFINET IO controller; S7 communication; Open communication (send/receive) S7 routing; IP configuration via DHCP/block; IP access control list; time-of-day synchronization; extended web diagnostics; Fast Startup; PROFIenergy support; IP routing; FTP; Web server; email; please note SIOS ID: 109799025 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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