Features:
- Executes standard and fail-safe programs in one SIMATIC S7-300 CPU.
- Separates MPI/PROFIBUS DP traffic from switched PROFINET communication.
- Uses a Micro Memory Card for battery-free program and data retention.
The isolated X1 port can be assigned to MPI or PROFIBUS DP master/slave operation.
Two X2 Ethernet ports form the integrated PROFINET switch and support IO controller and device functions.
Diagnostic messages and retained buffer entries support commissioning across the controller and its connected networks.
The Siemens 6ES7317-2FK14-0AB0 CPU 317F-2 PN/DP Fail-Safe Central Processing Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6ES7317-2FK14-0AB0 CPU 317F-2 PN/DP 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.
How the two network paths divide control traffic
- MPI mode: X1 carries programming, operator-panel, global-data, and S7 communication on the RS-485 path.
- DP master mode: The same X1 interface controls assigned PROFIBUS slaves and supports synchronized bus operation.
- DP slave mode: X1 can instead present the CPU as an active or passive PROFIBUS station with transfer-memory areas.
- PROFINET path: X2 keeps Ethernet services and PROFINET IO on two switched ports independent of the selected X1 role.
Where the project and runtime data are held
- Work area: Integrated work memory supplies the execution space used by program blocks and runtime data.
- Load area: The removable MMC carries the load memory rather than relying on an internal battery-backed device.
- Retention: Selected data blocks remain available in the dedicated retentive portion of work memory.
- Project transfer: Programming stores the project on the MMC before the CPU uses it for execution.
Commissioning evidence available inside the CPU
- Event history: The diagnostic buffer records controller events, with a retained portion preserved through power loss.
- Process messages: Diagnostic message handling reports configured process conditions to connected engineering or operator systems.
- Program inspection: Block status and breakpoints expose execution behavior during commissioning.
- Variable checks: Status, control, and forcing functions address configured inputs, outputs, memory bits, timers, counters, and data blocks.
Software boundaries for the controller project
- STEP 7: The CPU is configured with STEP 7 V5.5 or a later supported release.
- Safety project: Distributed Safety V5.4 SP4 provides the documented engineering level for the fail-safe program.
- Languages: LAD, FBD, STL, SCL, CFC, GRAPH, and HiGraph are listed for supported program creation.
- Program protection: Password protection and S7 block privacy limit access to protected user blocks.