Siemens 6GK7343-2AH11-0XA0
CP 343-2P AS-Interface master for S7-300 and ET 200M
Image is for illustrative purposes only. Please refer to product description.
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Siemens SIMATIC NET CP 343-2P communications processor: AS-Interface master (specification V3.0, profile M4) for the S7-300 and ET 200M, up to 62 AS-i devices.
- Manufacturer
- Siemens
- Manufacturer part no.
- 6GK7343-2AH11-0XA0
- Product family
- SIMATIC S7-300 PLC Modules
- Type
- Communications processor
- Lifecycle
- Discontinued
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Siemens
- Manufacturer part no.
- 6GK7343-2AH11-0XA0
- Type
- Communications processor
- Application
- AS-Interface master
- Used with
- SIMATIC S7-300 rack (S7-300 backplane bus)
- General technical data / product designation
- AS-Interface Master
- General technical data / product type designation
- CP 343-2 P (AS-i V 3.0)
- General technical data / protection class IP
- IP20
- General technical data / type of electrical connection of the AS-Interface
- S7-300, front connector, 20-pin
- General technical data / type of voltage supply power loss [W] insulation voltage rated value
- via backplane bus
- General technical data / product feature redundancy capability
- Yes
- product feature redundancy capability / note
- in connection with redundant IM153
- General technical data / product function suitable for AS-i Power24V
- Yes
- product function suitable for AS-i Power24V / note
- from product status 2 / firmware V3.1
- product function / web-based management
- No
- product function / diagnostics via email
- No
- product function / galvanic isolation
- Yes
- display version / as status display by LED
- RUN, APF, CER, AUP, CM, SF
- General technical data / type of configuration of the AS-Interface
- Set pushbutton on device, STEP7, command interface
- Communication/ Protocol / version of the AS-Interface specification
- V 3.0
- Communication/ Protocol / AS-Interface master profile is supported
- M4 (in acc. with AS-interface specification V 3.0)
- Communication/ Protocol / type of data transmission
- S7-300 / ET 200M backplane bus
- Communication/ Protocol / number of units per CPU maximum note
- Limited only by current draw from backplane bus
- number of interfaces / as AS-Interface
- 1
- number of interfaces / according to RS 485
- 0
- number of interfaces / according to Industrial Ethernet
- 0
- number of interfaces / according to PROFINET
- 0
- number of interfaces / according to wireless
- 0
- number of interfaces / according to USB
- 0
- number of interfaces / other
- 0
Show all 53 specificationsShow fewer
- Communication/ Protocol / product component optical interface
- No
- protocol is supported / ASIsafe (Safety at work) protocol
- No
- protocol is supported / PROFIsafe protocol
- No
- protocol is supported / PROFIBUS protocol
- No
- protocol is supported / PROFINET IO protocol
- No
- protocol is supported / PROFINET CBA protocol
- No
- protocol is supported / TCP/IP
- No
- protocol is supported / SNMP
- No
- Communication/ Protocol / standard for wireless communication IEEE 802.11
- No
- Inputs/ Outputs / number of inputs for AS-Interface maximum
- 496
- Inputs/ Outputs / number of outputs for AS-Interface maximum
- 496
- Inputs/ Outputs / number of AS-i devices per AS-Interface maximum
- 62
- Inputs/ Outputs / access to digital I/O data
- via process image/peripheral addresses
- Inputs/ Outputs / access to analog I/O data width height depth
- via data record transfer
- Mechanical data / fastening method
- S7 mounting rail
- Mechanical data / module format relative humidity at 25 °C during operation maximum installation altitude at height above sea level maximum
- S7-300 modular system
- suitability for use safety-related function explosion protection marking for intrinsic safety of related
- No
- equipment / EEx ia
- No
- equipment / EEx ib
- No
- Safety related data / explosion protection category for gas
- II 3 G Ex ec IIC T4 Gc
- Safety related data / explosion protection category for dust
- none
- Certificates/ approvals / General Product Approval
- EMV
- Certificates/ approvals / For use in hazardous locations
- Test Certificates ate firmations
Technical documents (1)
Key features
- AS-Interface master to specification V3.0, master profile M4
- Up to 62 AS-i devices, 496 inputs and 496 outputs
- Configured with STEP 7, the SET pushbutton or the command interface
- For an S7-300 rack or an ET 200M station; AS-i connected through a 20-pin front connector
- Discontinued by Siemens on 1 October 2025
About the Siemens 6GK7343-2AH11-0XA0
The Siemens 6GK7343-2AH11-0XA0 is the CP 343-2P, the AS-Interface master that connects an S7-300 or an ET 200M station to an AS-i network. Siemens's data sheet gives AS-i specification V3.0 with master profile M4, up to 62 devices with 496 inputs and 496 outputs, configuration by STEP 7, a SET pushbutton or the command interface, and power from the backplane bus. SiePortal shows its product cancellation on 1 October 2025 and suggests conversion to the CM AS-Interface master ST for SIMATIC ET 200SP (3RK7137-6SA00-0BC1), a different system rather than a direct replacement.
What is the 6GK7343-2AH11-0XA0 used for?
It links an S7-300 CPU to the AS-i sensors, actuators and modules on a machine's AS-Interface cable.
Lifecycle and successor
Discontinued.
Before you order
What to photograph or confirm so the right unit is quoted.
Check the order number and the product status or firmware on the label: Siemens's data sheet ties AS-i Power24V support to product status 2 or firmware V3.1.
Other parts in the Siemens SIMATIC S7-300 family
Listed for reference. They differ from the 6GK7343-2AH11-0XA0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.
| Product | Type | Lifecycle | Qty Available | Price | Action |
|---|---|---|---|---|---|
| Siemens 6GK7343-1CX10-0XE0CP 343-1 Lean communications processor, Industrial Ethernet | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6GK7343-1EX30-0XE0CP 343-1 communications processor, Industrial Ethernet, PROFINET IO controller | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6GK7342-5DA03-0XE0CP 342-5 communications processor, PROFIBUS DP master/slave | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6ES7340-1AH02-0AE0CP 340 communications processor, RS 232C | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6ES7332-7ND02-0AB0SM 332 analog output, 4 AO, 16 bit, isolated per channel | Analog output module | Discontinued | On Request | On request | View |
| Siemens 6ES7338-4BC01-0AB0SM 338 position input module, 3 SSI encoders | Position input module | Discontinued | On Request | On request | View |
| Siemens 6ES7341-1CH02-0AE0CP 341 communications processor, RS 422/485 | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6ES7341-1AH02-0AE0CP 341 communications processor, RS 232C | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6GK7343-1GX31-0XE0CP 343-1 Advanced communications processor, gigabit and PROFINET | Communications processor | Discontinued | On Request | On request | View |
| Siemens 6ES7351-1AH02-0AE0FM 351 positioning module for rapid/creep traverse drives | Positioning module | Discontinued | On Request | On request | View |
| Siemens 6ES7352-1AH02-0AE0FM 352 electronic cam controller, 13 cam tracks | Cam controller module | Discontinued | On Request | On request | View |
| Siemens 6ES7355-0VH10-0AE0FM 355 C controller module, 4 continuous control channels | Controller module | Discontinued | On Request | On request | View |
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