Features:
- One 9-pin RS485 interface connects the S7-300 station to PROFIBUS.
- Selectable rates from 9.6 kbit/s to 12 Mbit/s support different segment designs.
- FMS, S5-compatible, PG/OP, and S7 services share the processor.
Siemens 6GK7343-5FA01-0XE0 assigns PROFIBUS communication to a dedicated CP 343-5 module in the S7-300 rack.
The 6GK7343-5FA01-0XE0 bus rate must be matched to cable length, connector wiring, shielding, and end termination.
Status LEDs and the mode switch on 6GK7343-5FA01-0XE0 provide the first checks when a configured connection does not enter data exchange.
The Siemens 6GK7343-5FA01-0XE0 CP 343-5 PROFIBUS Communication Processor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK7343-5FA01-0XE0 CP 343-5 PROFIBUS Communication Processor Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
PROFIBUS Segment Checks
- Connector: The 9-pin Sub-D socket is the physical connection point for the PROFIBUS cable.
- Electrical layer: RS485 carries the differential bus signal between 6GK7343-5FA01-0XE0 and the connected stations.
- Rate selection: The configured rate spans 9.6 kbit/s to 12 Mbit/s and must match every station on the segment.
- Segment integrity: Cable reach, shield bonding, and end termination must be planned for the selected transmission rate.
Communication Resource Use
- FMS: Configured FMS connections exchange structured variables with partners using the same service.
- S5-compatible: SEND/RECEIVE services provide open data paths to configured communication partners.
- PG/OP: Engineering and operator devices use the processor for programming and visualization traffic.
- S7 communication: S7 connections share the CP resources with FMS, S5-compatible, and PG/OP services.
Module Supply Paths
- Backplane supply: The S7-300 rack supplies 5 V DC to the module electronics through the backplane connector.
- External feed: A separate 24 V DC source enters through the four-pole terminal block.
- Combined dependency: 6GK7343-5FA01-0XE0 requires correct rack seating and the external feed before communication can operate.
- Thermal load: The documented 5 W loss becomes cabinet heat and must be included in enclosure planning.
Front-Panel Diagnosis
- Mode switch: The selected operating mode determines whether the communication processor can start data exchange.
- Module state: The front indicators show whether 6GK7343-5FA01-0XE0 is running or reporting a processor condition.
- Bus state: Bus-related indication separates a PROFIBUS communication problem from a rack-power problem.
- Fault isolation: After checking the module state, verify station addresses, cable continuity, shielding, and end termination.