6GK7543-1AX00-0XE0.

**6GK7543-1AX00-0XE0** 

**Data sheet** 

**product type designation** 

**CP 1543-1** - - spare part - - communications processor CP 1543-1 for connection of SIMATIC S7-1500 to Industrial Ethernet; TCP/IP, ISO, UDP, S7 communication, IP broadcast/ multicast, security (VPN, firewall) diagnostics SNMPv1/v3, DHCP, FTP client/server, email, IPv4/IPv6, IEEE 802.1X (radius), time synchronization via NTP, 1x RJ45 (10/100/1000 Mbit). 

|**product type designation**|**CP 1543-1**|
|---|---|
||- - spare part - - communications processor CP 1543-1 for connection of SIMATIC<br>S7-1500 to Industrial Ethernet; TCP/IP, ISO, UDP, S7 communication, IP<br>broadcast/ multicast, security (VPN, firewall) diagnostics SNMPv1/v3, DHCP, FTP<br>client/server, email, IPv4/IPv6, IEEE 802.1X (radius), time synchronization via<br>NTP, 1x RJ45 (10/100/1000 Mbit).|
|product brand name|SIMATIC NET|
|**transfer rate**<br>~~|~~||
|transfer rate<br>~~|~~|~~|~~|
|● at the 1st interface|10 ... 1000 Mbit/s|
|**interfaces**<br>~~|~~||
|number of interfaces / accordingto Industrial Ethernet<br>~~|~~|1<br>~~|~~|
|number of electrical connections||
|● at the 1st interface / accordingto Industrial Ethernet|1|
|type of electrical connection||
|● at the 1st interface / accordingto Industrial Ethernet|RJ45 port|
|**supply voltage, current consumption, power loss**<br>~~ee~~||
|type of voltage / of the supplyvoltage<br>~~ee~~|DC<br>~~ee~~|
|supplyvoltage / 1 / from backplane bus|15 V|
|relative symmetrical tolerance / at DC||
|● at 15 V|3 %|
|consumed current||
|● from backplane bus / at DC / at 15 V / typical<br>~~—_~~|0.35 A<br>~~—_~~|
|power loss [W]<br>~~—_~~|5.3 W<br>~~—_~~|
|**ambient conditions**||
|ambient temperature||
|● for vertical installation / duringoperation|0 ... 40 °C|
|● for horizontallyarranged busbars / duringoperation|0 ... 60 °C|
|● duringstorage|-40 ... +70 °C|
|● duringtransport|-40 ... +70 °C|
|relative humidity||
|● at 25 °C / without condensation / during operation /<br>maximum<br>~~_~~|95 %<br>~~_~~|
|protection class IP<br>~~_~~|IP20<br>~~_~~|
|**design, dimensions and weights**||
|module format|Compact module S7-1500 single width|
|width|35 mm|
|height|142 mm|
|depth|129 mm|
|net weight|0.35 kg|
|fasteningmethod||
|● S7-1500 rail mounting|Yes|
|**product features, product functions, product components / general**<br>~~ee~~||
|number of units<br>~~ee~~|~~ee~~|



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||●per CPU / maximum|8||
|---|---|---|---|
||● note|dependingon CPU type||
||**performance data / open communication**|||
||number ofpossible connections / for open communication|||
||● bymeans of T blocks / maximum|118; dependingon the system upper limit||
||data volume|||
||● as user data per ISO on TCP connection / for open<br>communication / bymeans of T blocks / maximum|65536 byte||
||number of Multicast stations|118||
||**performance data / S7 communication**|||
||number ofpossible connections / for S7 communication|||
||● maximum|118; dependingon the system upper limit||
||**performance data / multi-protocol mode**|||
||number of active connections / with multi-protocol mode|118||
||**performance data / IT functions**|||
||number ofpossible connections|||
||● as client / bymeans of FTP / maximum|32||
||● as server / bymeans of FTP / maximum|16||
||number ofpossible connections|||
||● as server / bymeans of HTTP / maximum|4||
||● as email client / maximum|1||
||data volume / as user data for email / maximum|64 Kibyte||
||**performance data / telecontrol**|||
||protocol / is supported|||
||● TCP/IP|Yes||
||**product functions / management, configuration, engineering**|||
||product function / MIB support|Yes||
||protocol / is supported|||
||● SNMP v1|Yes||
||● SNMP v3|Yes||
||● DCP|Yes||
||● LLDP|Yes||
||configuration software|||
||● required|STEP 7 Professional V14(TIA Portal)or higher||
||identification & maintenance function|||
||● I&M0 - device-specific information|Yes||
||● I&M1 - higher level designation/location designation|Yes||
||product function / is supported / identification link|Yes; acc. to IEC 61406-1:2022||
||**product functions / diagnostics**|||
||product function / web-based diagnostics|Yes; via S7-1500 CPU||
||**product functions / routing**|||
||service / routing/ note|IP routingupto 1 Mbps||
||product function|||
||● static IP routing|Yes||
||● static IP routingIPv6|No||
||● dynamic IP routing|No||
||● dynamic IP routingIPv6|No||
||protocol / is supported|||
||● RIP v1|No||
||● RIPv2|No||
||● RIPnG for IPv6|No||
||● OSPFv2|No||
||● OSPFv3 for IPv6|No||
||● VRRP|No||
||● VRRP for IPv6|No||
||● BGP|No||
||● PPP|No||
||● PPoE via DSL|No||
||**product functions / security**|||



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|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 authenticationprocedure / with VPN connection|Preshared key (PSK), X.509v3 certificates|
|type of hashingalgorithms / with VPN connection|MD5, SHA-1, SHA-256, SHA-384, SHA-512|
|number ofpossible connections / with VPN connection|16|
|product function||
|● IEEE 802.1x(radius)|Yes|
|●passwordprotection for Web applications|No|
|● ACL - IP-based|No|
|● ACL - IP-based for PLC/routing|No|
|● switch-off of non-required services|Yes|
|● blockingof communication viaphysicalports|No|
|● logfile for unauthorized access|Yes|
|**product functions / time**||
|product function / SICLOCK support|No|
|product function /pass on time synchronization|Yes|
|protocol / is supported||
|● NTP|Yes|
|**standards, specifications, approvals**||
|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/ RegulatoryCompliance Mark(RCM)|Yes|
|certificate of suitability/ RoHS conformity|Yes|
|certificate of suitability/ EAC approval|Yes|
|**standards, specifications, approvals / hazardous environments / header**||
|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<br>GB standard|Yes|
|certificate of suitability/ FM registration|Yes|
|**standards, specifications, approvals / Environmental Product Declaration**||
|Environmental Product Declaration|Yes|
|global warming potential[CO2 eq]||
|● total|187.84999 kg|
|● duringmanufacturing|21.24 kg|
|● duringoperation|166.25999 kg|
|● after end of life|0.35 kg|
|**further information / internet links**||
|internet link||
|● to website: Selectionguide for cables and connectors|https://support.industry.siemens.com/cs/ww/en/view/109766358|
|● to webpage: selection aid TIA Selection Tool|https://www.siemens.com/tstcloud|
|● to website: Industrial communication|https://www.siemens.com/simatic-net|
|● to webpage: SiePortal|https://sieportal.siemens.com/|
|● to website: Image database|https://www.automation.siemens.com/bilddb|
|● to website: CAx-Download-Manager|https://siemens.com/cax|
|● to website: IndustryOnline Support|https://support.industry.siemens.com|
|**security information**||
|security information|Siemens provides products and solutions with industrial cybersecurity functions<br>that support the secure operation of plants, systems, machines and networks.<br>In order to protect plants, systems, machines and networks against cyber<br>threats, it is necessary to implement - and continuously maintain - a holistic,<br>state-of-the-art industrial cybersecurity concept. Siemens’ products and<br>solutions constitute one element of such a concept. Customers are responsible<br>for preventing unauthorized access to their plants, systems, machines and<br>networks. Such systems, machines and components should only be connected<br>to an enterprise network or the internet if and to the extent such a connection is<br>necessary and only when appropriate security measures (e.g. firewalls and/or<br>network segmentation) are in place. For additional information on industrial|



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cybersecurity measures that may be implemented, please visit www.siemens.com/cybersecurity-industry. Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to cyber threats. To stay informed about product updates, subscribe to the Siemens Industrial Cybersecurity RSS Feed under https://www.siemens.com/cert. (V4.7) ~~a~~ **Approvals / Certificates General Product Approval** Declaration of ConChina RoHS formity ce ~~O~~ S ! **General Product Approval** ® Miscellaneous & Ce Ef China RoHS **For use in hazardous locations Environment** €x) ~~ee~~ FM CCC-Ex | **last modified:** 5/5/2026 

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