The CPU 317-2 PN/DP is a CPU with a large program memory. It is used in installations which have distributed automation structures in addition to a centralized I/O. It can be used, for example, as a central controller in production lines or as a machine controller with stringent requirements on machining speed.

Siemens PLC S7-300 Product Specifications:

Article number		6ES7317-2EK14-0AB0
		CPU317-2 PN/DP, 1 MB
General information
HW functional status		1
Firmware version		V3.2
Product function
● Isochronous mode		Yes; Via PROFIBUS DP or PROFINET interface
Engineering with
● Programming package		STEP 7 V5.5 or higher
Supply voltage
Rated value (DC)		24 V
permissible range, lower limit (DC)		20.4 V
permissible range, upper limit (DC)		28.8 V
external protection for power supply lines (recommendation)		2 A min.
Mains buffering
● Mains/voltage failure stored energy time		5 ms
● Repeat rate, min.		1 s
Input current
Current consumption (rated value)		750 mA
Current consumption (in no-load operation), typ.		150 mA
Inrush current, typ.		4 A
I²t		1 A²·s
Power loss
Power loss, typ.		4.65 W
Memory
Work memory
● integrated		1 024 kbyte
● expandable		No
Load memory
● Plug-in (MMC)		Yes
● Plug-in (MMC), max.		8 Mbyte
● Data management on MMC (after last programming), min.		10 y
Backup
● present		Yes; Guaranteed by MMC (maintenance-free)
● without battery		Yes; Program and data
CPU processing times
for bit operations, typ.		0.025 µs
for word operations, typ.		0.03 µs
for fixed point arithmetic, typ.		0.04 µs
for floating point arithmetic, typ.		0.16 µs
CPU-blocks
Number of blocks (total)		2 048; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.
DB
● Number, max.		2 048; Number range: 1 to 16000
● Size, max.		64 kbyte
FB
● Number, max.		2 048; Number range: 0 to 7999
● Size, max.		64 kbyte
FC
● Number, max.		2 048; Number range: 0 to 7999
● Size, max.		64 kbyte
OB
● Size, max.		64 kbyte
● Number of free cycle OBs		1; OB 1
● Number of time alarm OBs		1; OB 10
● Number of delay alarm OBs		2; OB 20, 21
● Number of cyclic interrupt OBs		4; OB 32, 33, 34, 35
● Number of process alarm OBs		1; OB 40
● Number of DPV1 alarm OBs		3; OB 55, 56, 57
● Number of isochronous mode OBs		1; OB 61 – isochronous mode is possible either on DP or PROFINET IO (not simultaneously)
● Number of startup OBs		1; OB 100
● Number of asynchronous error OBs		6; OB 80, 82, 83, 85, 86, 87 (OB83 only for PROFINET IO)
● Number of synchronous error OBs		2; OB 121, 122
Nesting depth
● per priority class		16
● additional within an error OB		4
Counters, timers and their retentivity
S7 counter
● Number		512
Retentivity
— adjustable		Yes
— lower limit		0
— upper limit		511
— preset		Z 0 to Z 7
Counting range
— adjustable		Yes
— lower limit		0
— upper limit		999
IEC counter
● present		Yes
● Type		SFB
● Number		Unlimited (limited only by RAM capacity)
S7 times
● Number		512
Retentivity
— adjustable		Yes
— lower limit		0
— upper limit		511
— preset		No retentivity
Time range
— lower limit		10 ms
— upper limit		9 990 s
IEC timer
● present		Yes
● Type		SFB
● Number		Unlimited (limited only by RAM capacity)
Data areas and their retentivity
Retentive data area (incl. timers, counters, flags), max.		256 kbyte
Flag
● Size, max.		4 096 byte
● Retentivity available		Yes; From MB 0 to MB 4 095
● Retentivity preset		MB 0 to MB 15
● Number of clock memories		8; 1 memory byte
Data blocks
● Retentivity adjustable		Yes; via non-retain property on DB
● Retentivity preset		Yes
Local data
● per priority class, max.		32 768 byte; Max. 2048 bytes per block
Address area
I/O address area
● Inputs		8 192 byte
● Outputs		8 192 byte
of which distributed
— Inputs		8 192 byte
— Outputs		8 192 byte
Process image
● Inputs		8 192 byte
● Outputs		8 192 byte
● Inputs, adjustable		8 192 byte
● Outputs, adjustable		8 192 byte
● Inputs, default		256 byte
● Outputs, default		256 byte
Subprocess images
● Number of subprocess images, max.		1; With PROFINET IO, the length of the user data is limited to 1600 bytes
Digital channels
● Inputs		65 536
— of which central		1 024
● Outputs		65 536
— of which central		1 024
Analog channels
● Inputs		4 096
— of which central		256
● Outputs		4 096
— of which central		256
Hardware configuration
Number of expansion units, max.		3
Number of DP masters
● integrated		1
● via CP		4
Number of operable FMs and CPs (recommended)
● FM		8
● CP, PtP		8
● CP, LAN		10
Rack
● Racks, max.		4
● Modules per rack, max.		8
Time of day
Clock
● Hardware clock (real-time)		Yes
● retentive and synchronizable		Yes
● Backup time		6 wk; At 40 °C ambient temperature
● Deviation per day, max.		10 s; Typ.: 2 s
● Behavior of the clock following POWER-ON		Clock continues running after POWER OFF
● Behavior of the clock following expiry of backup period		the clock continues at the time of day it had when power was switched off
Operating hours counter
● Number		4
● Number/Number range		0 to 3
● Range of values		0 to 2^31 hours (when using SFC 101)
● Granularity		1 h
● retentive		Yes; Must be restarted at each restart
Clock synchronization
● supported		Yes
● to MPI, master		Yes
● to MPI, slave		Yes
● to DP, master		Yes; With DP slave only slave clock
● to DP, slave		Yes
● in AS, master		Yes
● in AS, slave		Yes
● on Ethernet via NTP		Yes; As client
Digital inputs
Number of digital inputs		0
Digital outputs
Number of digital outputs		0
Analog inputs
Number of analog inputs		0
Analog outputs
Number of analog outputs		0
Interfaces
Number of industrial Ethernet interfaces		1; 2 ports (switch) RJ45
Number of PROFINET interfaces		1; 2 ports (switch) RJ45
Number of RS 485 interfaces		1; Combined MPI / PROFIBUS DP
Number of RS 422 interfaces		0
1. Interface
Interface type		Integrated RS 485 interface
Isolated		Yes
Interface types
● RS 485		Yes
● Output current of the interface, max.		200 mA
Protocols
● MPI		Yes
● PROFIBUS DP master		Yes
● PROFIBUS DP slave		Yes
● Point-to-point connection		No
MPI
● Transmission rate, max.		12 Mbit/s
Services
— PG/OP communication		Yes
— Routing		Yes
— Global data communication		Yes
— S7 basic communication		Yes
— S7 communication		Yes
— S7 communication, as client		No; but via CP and loadable FB
— S7 communication, as server		Yes
PROFIBUS DP master
● Transmission rate, max.		12 Mbit/s
● Number of DP slaves, max.		124
Services
— PG/OP communication		Yes
— Routing		Yes
— Global data communication		No
— S7 basic communication		Yes; I blocks only
— S7 communication		Yes
— S7 communication, as client		No
— S7 communication, as server		Yes
— Equidistance		Yes
— Isochronous mode		Yes; OB 61; isochronous mode can only be used alternatively on PROFIBUS DP or PROFINET IO
— SYNC/FREEZE		Yes
— Activation/deactivation of DP slaves		Yes
— Number of DP slaves that can be simultaneously activated/deactivated, max.		8
— Direct data exchange (slave-to-slave communication)		Yes; as subscriber
— DPV1		Yes
Address area
— Inputs, max.		8 kbyte
— Outputs, max.		8 kbyte
User data per DP slave
— Inputs, max.		244 byte
— Outputs, max.		244 byte
PROFIBUS DP slave
● Transmission rate, max.		12 Mbit/s
● automatic baud rate search		Yes; only with passive interface
● Address area, max.		32
● User data per address area, max.		32 byte
Services
— PG/OP communication		Yes
— Routing		Yes; Only with active interface
— Global data communication		No
— S7 basic communication		No
— S7 communication		Yes
— S7 communication, as client		No
— S7 communication, as server		Yes; Connection configured on one side only
— Direct data exchange (slave-to-slave communication)		Yes
— DPV1		No
Transfer memory
— Inputs		244 byte
— Outputs		244 byte
2. Interface
Interface type		PROFINET
Isolated		Yes
automatic detection of transmission rate		Yes; 10/100 Mbit/s
Autonegotiation		Yes
Autocrossing		Yes
Change of IP address at runtime, supported		Yes
Interface types
● RJ 45 (Ethernet)		Yes
● Number of ports		2
● integrated switch		Yes
Protocols
● MPI		No
● PROFINET IO Controller		Yes; Also simultaneously with IO-Device functionality
● PROFINET IO Device		Yes; Also simultaneously with IO Controller functionality
● PROFINET CBA		Yes
● PROFIBUS DP master		No
● PROFIBUS DP slave		No
● Open IE communication		Yes; Via TCP/IP, ISO on TCP, and UDP
● Web server		Yes
● Media redundancy		Yes
PROFINET IO Controller
● Transmission rate, max.		100 Mbit/s
Services
— PG/OP communication		Yes
— Routing		Yes
— S7 communication		Yes; with loadable FBs, max. configurable connections: 16, max. number of instances: 32
— Isochronous mode		Yes; OB 61; isochronous mode can only be used alternatively on PROFIBUS DP or PROFINET IO
— IRT		Yes
— Shared device		Yes
— Prioritized startup		Yes
— Number of IO devices with prioritized startup, max.		32
— Number of connectable IO Devices, max.		128
— Of which IO devices with IRT, max.		64
— of which in line, max.		64
— Number of IO Devices with IRT and the option “high flexibility”		128
— of which in line, max.		61
— Number of connectable IO Devices for RT, max.		128
— of which in line, max.		128
— Activation/deactivation of IO Devices		Yes
— Number of IO Devices that can be simultaneously activated/deactivated, max.		8
— IO Devices changing during operation (partner ports), supported		Yes
— Number of IO Devices per tool, max.		8
— Device replacement without swap medium		Yes
— Send cycles		250 μs, 500 μs,1 ms; 2 ms, 4 ms (not in the case of IRT with “high flexibility” option)
— Updating time		250 µs to 512 ms (depending on the operating mode, see Manual “S7-300 CPU 31xC and CPU 31x, technical Data” for more details)
Address area
— Inputs, max.		8 kbyte
— Outputs, max.		8 kbyte
— User data consistency, max.		1 024 byte
PROFINET IO Device
Services
— PG/OP communication		Yes
— Routing		Yes
— S7 communication		Yes; with loadable FBs, max. configurable connections: 16, max. number of instances: 32
— Isochronous mode		No
— IRT		Yes
— PROFIenergy		Yes; With SFB 73 / 74 prepared for loadable PROFIenergy standard FB for I-Device
— Shared device		Yes
— Number of IO Controllers with shared device, max.		2
Transfer memory
— Inputs, max.		1 440 byte; Per IO Controller with shared device
— Outputs, max.		1 440 byte; Per IO Controller with shared device
Submodules
— Number, max.		64
— User data per submodule, max.		1 024 byte
PROFINET CBA
● acyclic transmission		Yes
● cyclic transmission		Yes
Open IE communication
● Number of connections, max.		16
● Local port numbers used at the system end		0, 20, 21, 23, 25, 80, 102, 135, 161, 443, 8080, 34962, 34963, 34964, 65532, 65533, 65534, 65535
● Keep-alive function, supported		Yes
Protocols
PROFIsafe		No
Redundancy mode
Media redundancy
— Switchover time on line break, typ.		200 ms; PROFINET MRP
— Number of stations in the ring, max.		50
Open IE communication
● TCP/IP		Yes; via integrated PROFINET interface and loadable FBs
— Number of connections, max.		16
— Data length for connection type 01H, max.		1 460 byte
— Data length for connection type 11H, max.		32 768 byte
— several passive connections per port, supported		Yes
● ISO-on-TCP (RFC1006)		Yes; via integrated PROFINET interface and loadable FBs
— Number of connections, max.		16
— Data length, max.		32 768 byte
● UDP		Yes; via integrated PROFINET interface and loadable FBs
— Number of connections, max.		16
— Data length, max.		1 472 byte
Web server
● supported		Yes
● User-defined websites		Yes
● Number of HTTP clients		5
communication functions / header
PG/OP communication		Yes
Data record routing		Yes
Global data communication
● supported		Yes
● Number of GD loops, max.		8
● Number of GD packets, max.		8
● Number of GD packets, transmitter, max.		8
● Number of GD packets, receiver, max.		8
● Size of GD packets, max.		22 byte
● Size of GD packet (of which consistent), max.		22 byte
S7 basic communication
● supported		Yes
● User data per job, max.		76 byte
● User data per job (of which consistent), max.		76 byte; 76 bytes (with X_SEND or X_RCV); 64 bytes (with X_PUT or X_GET as server)
S7 communication
● supported		Yes
● as server		Yes
● as client		Yes; via integrated PROFINET interface and loadable FB or via CP and loadable FB
● User data per job, max.		See online help of STEP 7 (shared parameters of the SFBs/FBs and of the SFCs/FCs of S7 Communication)
S5 compatible communication
● supported		Yes; via CP and loadable FC
communication functions / PROFINET CBA (with set target communication load) / header
● Setpoint for the CPU communication load		50 %
● number of remote connection partners / with PROFINET CBA		32
● number of technological functions / with PROFINET CBA / for master or slave		30
● number of connections / with PROFINET CBA / for master or slave / total		1 000
● data volume / of the input variables / with PROFINET CBA / for master or slave		4 000 byte
● data volume / of the output variables / with PROFINET CBA / for master or slave		4 000 byte
● number of internal and PROFIBUS interconnections / with PROFINET CBA / maximum		500
● data volume / of internal and PROFIBUS interconnections / with PROFINET CBA / for master or slave		4 000 byte
● data volume / with PROFINET CBA / per connection / maximum		1 400 byte
performance data / PROFINET CBA / remote interconnection / with acyclic transfer / header
— update time / of the remote interconnections / in the case of acyclic transmission / with PROFINET CBA		500 ms
— number of remote connections to input variables / in the case of acyclic transmission / with PROFINET CBA / maximum		100
— number of remote connections to output variables / in the case of acyclic transmission / with PROFINET CBA / maximum		100
— data volume / as user data for remote interconnections with input variables / in the case of acyclic transmission / with PROFINET CBA		2 000 byte
— data volume / as user data for remote interconnections with output variables / in the case of acyclic transmission / with PROFINET CBA		2 000 byte
— data volume / as user data for remote interconnections / in the case of acyclic transmission / with PROFINET CBA / per connection / maximum		1 400 byte
performance data / PROFINET CBA / remote interconnection / with cyclic transfer / header
— update time / of the remote interconnections / with cyclical transfer / with PROFINET CBA		10 ms
— number of remote connections to input variables / with PROFINET CBA / with cyclic transfer / maximum		200
— number of remote connections to output variables / with cyclical transfer / with PROFINET CBA / maximum		200
— data volume / as user data for remote interconnections with input variables / with cyclical transfer / with PROFINET CBA / maximum		2 000 byte
— data volume / as user data for remote interconnections with output variables / with cyclical transfer / with PROFINET CBA / maximum		2 000 byte
— data volume / as user data for remote interconnections / with cyclical transfer / with PROFINET CBA / per connection / maximum		450 byte
performance data / PROFINET CBA / HMI variables via PROFINET / acyclic / header
— number of connectable HMI stations / for HMI variables / in the case of acyclic transmission / with PROFINET CBA		3; 2x PN OPC/1x iMap
— update time / of the HMI variables / in the case of acyclic transmission / with PROFINET CBA		500 ms
— number of HMI variables / in the case of acyclic transmission / with PROFINET CBA / maximum		200
— data volume / as user data for HMI variables / in the case of acyclic transmission / with PROFINET CBA / maximum		2 000 byte
performance data / PROFINET CBA / PROFIBUS proxy functionality / header
— product function / with PROFINET CBA / PROFIBUS proxy functionality		Yes
— number of coupled PROFIBUS devices / with PROFIBUS functionality		16
— data volume / with PROFIBUS proxy functionality / with PROFINET CBA / per connection / maximum		240 byte; Slave-dependent
Number of connections
● overall		32
● usable for PG communication		31
— reserved for PG communication		1
— adjustable for PG communication, min.		1
— adjustable for PG communication, max.		31
● usable for OP communication		31
— reserved for OP communication		1
— adjustable for OP communication, min.		1
— adjustable for OP communication, max.		31
● usable for S7 basic communication		30
— reserved for S7 basic communication		0
— adjustable for S7 basic communication, min.		0
— adjustable for S7 basic communication, max.		30
● usable for S7 communication		16
— reserved for S7 communication		0
— adjustable for S7 communication, min.		0
— adjustable for S7 communication, max.		16
● total number of instances, max.		32
● usable for routing		X1 as MPI: max. 10; X1 as DP master: max. 24; X1 as DP slave (active): max. 14; X2 as PROFINET: 24 max.
S7 message functions
Number of login stations for message functions, max.		32; Depending on the configured connections for PG/OP and S7 basic communication
Process diagnostic messages		Yes
simultaneously active Alarm-S blocks, max.		300
Test commissioning functions
Status block		Yes; Up to 2 simultaneously
Single step		Yes
Number of breakpoints		4
Status/control
● Status/control variable		Yes
● Variables		Inputs, outputs, memory bits, DB, times, counters
● Number of variables, max.		30
— of which status variables, max.		30
— of which control variables, max.		14
Forcing
● Forcing		Yes
● Forcing, variables		Inputs, outputs
● Number of variables, max.		10
Diagnostic buffer
● present		Yes
● Number of entries, max.		500
— adjustable		No
— of which powerfail-proof		100; Only the last 100 entries are retained
● Number of entries readable in RUN, max.		499
— adjustable		Yes; From 10 to 499
— preset		10
Service data
● can be read out		Yes
Ambient conditions
Ambient temperature during operation
● min.		0 °C
● max.		60 °C
configuration / header
Configuration software
● STEP 7		Yes; V5.5 or higher
configuration / programming / header
● Command set		see instruction list
● Nesting levels		8
● System functions (SFC)		see instruction list
● System function blocks (SFB)		see instruction list
Programming language
— LAD		Yes
— FBD		Yes
— STL		Yes
— SCL		Yes
— CFC		Yes
— GRAPH		Yes
— HiGraph®		Yes
Know-how protection
● User program protection/password protection		Yes
● Block encryption		Yes; With S7 block Privacy
Dimensions
Width		40 mm
Height		125 mm
Depth		130 mm
Weights
Weight, approx.		340 g