CPU 1518F-4 PN/DP is the most powerful SIEMENS S7-1500 CPU

CPU 1518F-4 PN/DP

  • The CPU with a very large program and data memory in the S7-1500 controller product range for failsafe applications with highest requirements regarding program scope and networking.
  • Can be used for failsafe functions up to SIL 3 according to IEC 61508 and up to PLe according to ISO 13849.
  • Extremely high processing speed for binary and floating-point arithmetic.
  • For cross-industry automation tasks in series machine, special machine and plant construction
  • Used as central controller in production lines with central and distributed I/O.
  • Supports PROFIsafe in centralized and distributed configuration.
  • PROFINET IO IRT interface with 2-port switch.
  • Two additional PROFINET interfaces with separate IP addresses.
  • PROFINET IO controller for operating distributed I/O on PROFINET.
  • PROFINET I-Device for connecting the CPU as an intelligent PROFINET device under a SIMATIC or non-Siemens PROFINET IO controller.
  • PROFIBUS DP master interface.
  • Isochronous mode on PROFIBUS and PROFINET.
  • Integrated Motion Control functionalities for controlling speed-controlled and positioning axes, support for external encoders
  • Integrated Web server with the option of creating user-defined Web pages.

Note:

SIMATIC Memory Card required for operation of the CPU.

Product No. / Product Description

SIMATIC S7-1500 CPU 1518F-4 PN/DP Ordering data

6ES7518-4FP00-0AB0
SIMATIC S7-1500F, CPU 1518F-4 PN/DP, CENTRAL PROCESSING UNIT WITH WORKING MEMORY 6 MB FOR PROGRAM AND 20 MB FOR DATA, 1. INTERFACE: PROFINET IRT WITH 2 PORT SWITCH, 2. INTERFACE: PROFINET RT, 3. INTERFACE: ETHERNET, 4. INTERFACE: PROFIBUS, 1 NS BIT-PERFORMANCE, SIMATIC MEMORY CARD NECESSARY

The CPU 1518F-4 PN/DP features:

  • A powerful processor
    The CPU achieves a command execution time as low as 1 ns per binary command.
  • Extensive RAM
    6 MB for program, 20 MB for data
  • SIMATIC Memory Cards as load memory;
    permit additional functions such as datalog and archives
  • Flexible expansion options
    Single-tier configuration with max. 32 modules (CPU + 31 modules)
  • Screen with functions for the
    • displaying overview information such as IP address of the integrated interface, station name, plant designation, location identifier, etc.
    • displaying safety mode, overall signature and date of the last download with signature change
    • Display of diagnostic information
    • Display of module information
    • Showing display settings
    • Setting IP addresses
    • Setting date and time
    • Selection of operating mode
    • Resetting of CPU to factory settings
    • Disabling/enabling of display
    • Enabling of protection levels
    • Display of safety mode, overall signature and date of the last download with signature change.
  • PROFINET IO IRT interface for connecting distributed I/O via PROFINET
  • 2 PROFINET interfaces for network separation
  • PROFIBUS DP interface for connecting distributed I/O via PROFIBUS
  • Supports PROFIsafe in centralized and distributed configuration

CPU 1518F-4 PN/DP Technical specifications

Article number

6ES7518-4FP00-0AB0

CPU 1518F-4 PN/DP, 6 MB PROG, 20MB DATA

General information

Firmware version

V2.0

Engineering with

  • ● STEP 7 TIA Portal configurable/integrated as of version

V14

Configuration control

via dataset

Yes

Display

Screen diagonal [cm]

6.1 cm

Control elements

Number of keys

6

Mode selector switch

1

Supply voltage

Type of supply voltage

24 V DC

permissible range, lower limit (DC)

19.2 V

permissible range, upper limit (DC)

28.8 V

Reverse polarity protection

Yes

Mains buffering

  • ● Mains/voltage failure stored energy time

5 ms

Input current

Current consumption (rated value)

1.55 A

Inrush current, max.

2.4 A; Rated value

I²t

0.02 A²·s

Power

Infeed power to the backplane bus

12 W

Power consumption from the backplane bus (balanced)

30 W

Power loss

Power loss, typ.

24 W

Memory

Number of slots for SIMATIC memory card

1

SIMATIC memory card required

Yes

Work memory

  • ● integrated (for program)

6 Mbyte

  • ● integrated (for data)

20 Mbyte

Load memory

  • ● Plug-in (SIMATIC Memory Card), max.

32 Gbyte

Backup

  • ● maintenance-free

Yes

CPU processing times

for bit operations, typ.

1 ns

for word operations, typ.

2 ns

for fixed point arithmetic, typ.

2 ns

for floating point arithmetic, typ.

6 ns

CPU-blocks

Number of elements (total)

10 000; Blocks (OB, FB, FC, DB) and UDTs

DB

  • ● Number range

1 … 60 999; subdivided into: number range that can be used by the user: 1 … 59 999, and number range of DBs created via SFC 86: 60 000 … 60 999

  • ● Size, max.

16 Mbyte; For non-optimized block accesses, the max. size of the DB is 64 KB

FB

  • ● Number range

0 … 65 535

  • ● Size, max.

512 kbyte

FC

  • ● Number range

0 … 65 535

  • ● Size, max.

512 kbyte

OB

  • ● Size, max.

512 kbyte

  • ● Number of free cycle OBs

100

  • ● Number of time alarm OBs

20

  • ● Number of delay alarm OBs

20

  • ● Number of cyclic interrupt OBs

20; With minimum OB 3x cycle of 100 µs

  • ● Number of process alarm OBs

50

  • ● Number of DPV1 alarm OBs

3

  • ● Number of isochronous mode OBs

2

  • ● Number of technology synchronous alarm OBs

2

  • ● Number of startup OBs

100

  • ● Number of asynchronous error OBs

4

  • ● Number of synchronous error OBs

2

  • ● Number of diagnostic alarm OBs

1

Nesting depth

  • ● per priority class

24; Up to 8 possible for F-blocks

Counters, timers and their retentivity

S7 counter

  • ● Number

2 048

Retentivity

  • — adjustable

Yes

IEC counter

  • ● Number

Any (only limited by the main memory)

Retentivity

  • — adjustable

Yes

S7 times

  • ● Number

2 048

Retentivity

  • — adjustable

Yes

IEC timer

  • ● Number

Any (only limited by the main memory)

Retentivity

  • — adjustable

Yes

Data areas and their retentivity

Retentive data area (incl. timers, counters, flags), max.

768 kbyte; In total; available retentive memory for bit memories, timers, counters, DBs, and technology data (axes): 700 KB

Flag

  • ● Number, max.

16 kbyte

  • ● Number of clock memories

8; 8 clock memory bits, grouped into one clock memory byte

Data blocks

  • ● Retentivity adjustable

Yes

  • ● Retentivity preset

No

Local data

  • ● per priority class, max.

64 kbyte; max. 16 KB per block

Address area

Number of IO modules

16 384; max. number of modules / submodules

I/O address area

  • ● Inputs

32 kbyte; All inputs are in the process image

  • ● Outputs

32 kbyte; All outputs are in the process image

per integrated IO subsystem

  • — Inputs (volume)

16 kbyte; 16 KB via the integrated PROFINET IO interface, 8 KB via the integrated DP interface

  • — Outputs (volume)

16 kbyte; 16 KB via the integrated PROFINET IO interface, 8 KB via the integrated DP interface

per CM/CP

  • — Inputs (volume)

8 kbyte

  • — Outputs (volume)

8 kbyte

Subprocess images

  • ● Number of subprocess images, max.

32

Hardware configuration

Number of distributed IO systems

64; A distributed I/O system is characterized not only by the integration of distributed I/O via PROFINET or PROFIBUS communication modules, but also by the connection of I/O via AS-i master modules or links (e.g. IE/PB-Link)

Number of DP masters

  • ● integrated

1

  • ● Via CM

8; A maximum of 8 CMs/CPs (PROFIBUS, PROFINET, Ethernet) can be inserted in total

Number of IO Controllers

  • ● integrated

2

  • ● Via CM

8; A maximum of 8 CMs/CPs (PROFIBUS, PROFINET, Ethernet) can be inserted in total

Rack

  • ● Modules per rack, max.

32; CPU + 31 modules

  • ● Number of lines, max.

1

PtP CM

  • ● Number of PtP CMs

the number of connectable PtP CMs is only limited by the number of available slots

Time of day

Clock

  • ● Type

Hardware clock

  • ● Backup time

6 wk; At 40 °C ambient temperature, typically

  • ● Deviation per day, max.

10 s; Typ.: 2 s

Operating hours counter

  • ● Number

16

Clock synchronization

  • ● supported

Yes

  • ● to DP, master

Yes

  • ● in AS, master

Yes

  • ● in AS, slave

Yes

  • ● on Ethernet via NTP

Yes

Interfaces

Number of PROFINET interfaces

3

Number of PROFIBUS interfaces

1

1. Interface

Interface types

  • ● Number of ports

2

  • ● integrated switch

Yes

  • ● RJ 45 (Ethernet)

Yes; X1

Functionality

  • ● PROFINET IO Controller

Yes

  • ● PROFINET IO Device

Yes

  • ● SIMATIC communication

Yes

  • ● Open IE communication

Yes

  • ● Web server

Yes

  • ● Media redundancy

Yes

PROFINET IO Controller

Services

  • — PG/OP communication

Yes

  • — S7 routing

Yes

  • — Isochronous mode

Yes

  • — Open IE communication

Yes

  • — IRT

Yes

  • — MRP

Yes; As MRP redundancy manager and/or MRP client; max. number of devices in the ring: 50

  • — MRPD

Yes; Requirement: IRT

  • — PROFIenergy

Yes

  • — Prioritized startup

Yes; Max. 32 PROFINET devices

  • — Number of connectable IO Devices, max.

512; In total, up to 1 000 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET

  • — Of which IO devices with IRT, max.

64

  • — Number of connectable IO Devices for RT, max.

512

  • — of which in line, max.

512

  • — Number of IO Devices that can be simultaneously activated/deactivated, max.

8; in total across all interfaces

  • — Number of IO Devices per tool, max.

8

  • — Updating times

The minimum value of the update time also depends on communication share set for PROFINET IO, on the number of IO devices, and on the quantity of configured user data

Update time for IRT

  • — for send cycle of 125 µs

125 µs

  • — for send cycle of 187.5 µs

187.5 µs

  • — for send cycle of 250 µs

250 µs to 4 ms

  • — for send cycle of 500 µs

500 µs to 8 ms

  • — for send cycle of 1 ms

1 ms to 16 ms

  • — for send cycle of 2 ms

2 ms to 32 ms

  • — for send cycle of 4 ms

4 ms to 64 ms

  • — With IRT and parameterization of “odd” send cycles

Update time = set “odd” send clock (any multiple of 125 µs: 375 µs, 625 µs … 3 875 µs)

Update time for RT

  • — for send cycle of 250 µs

250 µs to 128 ms

  • — for send cycle of 500 µs

500 µs to 256 ms

  • — for send cycle of 1 ms

1 ms to 512 ms

  • — for send cycle of 2 ms

2 ms to 512 ms

  • — for send cycle of 4 ms

4 ms to 512 ms

PROFINET IO Device

Services

  • — PG/OP communication

Yes

  • — S7 routing

Yes

  • — Isochronous mode

No

  • — Open IE communication

Yes

  • — IRT

Yes

  • — MRP

Yes

  • — MRPD

Yes; Requirement: IRT

  • — PROFIenergy

Yes

  • — Shared device

Yes

  • — Number of IO Controllers with shared device, max.

4

2. Interface

Interface types

  • ● Number of ports

1

  • ● integrated switch

No

  • ● RJ 45 (Ethernet)

Yes; X2

Functionality

  • ● PROFINET IO Controller

Yes

  • ● PROFINET IO Device

Yes

  • ● SIMATIC communication

Yes

  • ● Open IE communication

Yes

  • ● Web server

Yes

  • ● Media redundancy

No

PROFINET IO Controller

Services

  • — PG/OP communication

Yes

  • — S7 routing

Yes

  • — Isochronous mode

No

  • — Open IE communication

Yes

  • — IRT

No

  • — MRP

No

  • — PROFIenergy

Yes

  • — Prioritized startup

No

  • — Number of connectable IO Devices, max.

128; In total, up to 1 000 distributed I/O devices can be connected via AS-i, PROFIBUS or PROFINET

  • — Number of connectable IO Devices for RT, max.

128

  • — of which in line, max.

128

  • — Number of IO Devices that can be simultaneously activated/deactivated, max.

8; in total across all interfaces

  • — Updating times

The minimum value of the update time also depends on communication share set for PROFINET IO, on the number of IO devices, and on the quantity of configured user data

Update time for RT

  • — for send cycle of 1 ms

1 ms to 512 ms

PROFINET IO Device

Services

  • — PG/OP communication

Yes

  • — S7 routing

Yes

  • — Isochronous mode

No

  • — Open IE communication

Yes

  • — IRT

No

  • — MRP

No

  • — MRPD

No

  • — PROFIenergy

Yes

  • — Prioritized startup

No

  • — Shared device

Yes

  • — Number of IO Controllers with shared device, max.

4

3. Interface

Interface types

  • ● Number of ports

1

  • ● integrated switch

No

  • ● RJ 45 (Ethernet)

Yes; X3

Functionality

  • ● PROFINET IO Controller

No

  • ● PROFINET IO Device

No

  • ● SIMATIC communication

Yes

  • ● Open IE communication

Yes

  • ● Web server

Yes

4. Interface

Interface types

  • ● Number of ports

1

  • ● RS 485

Yes; X4

Functionality

  • ● PROFIBUS DP master

Yes

  • ● PROFIBUS DP slave

No

  • ● SIMATIC communication

Yes

Interface types

RJ 45 (Ethernet)

  • ● 100 Mbps

Yes

  • ● 1000 Mbps

Yes; Only possible at the X3 interface of the CPU 1518

  • ● Autonegotiation

Yes

  • ● Autocrossing

Yes

  • ● Industrial Ethernet status LED

Yes

RS 485

  • ● Transmission rate, max.

12 Mbit/s

Protocols

Number of connections

  • ● Number of connections, max.

384; via integrated interfaces of the CPU and connected CPs / CMs

  • ● Number of connections reserved for ES/HMI/web

10

  • ● Number of connections via integrated interfaces

192

  • ● Number of S7 routing paths

64; in total, only 16 S7-Routing connections are supported via PROFIBUS

SIMATIC communication

  • ● S7 communication, as server

Yes

  • ● S7 communication, as client

Yes

  • ● User data per job, max.

See online help (S7 communication, user data size)

Open IE communication

  • ● TCP/IP

Yes

  • — Data length, max.

64 kbyte

  • — several passive connections per port, supported

Yes

  • ● ISO-on-TCP (RFC1006)

Yes

  • — Data length, max.

64 kbyte

  • ● UDP

Yes

  • — Data length, max.

1 472 byte

  • ● DHCP

No

  • ● SNMP

Yes

  • ● DCP

Yes

  • ● LLDP

Yes

Web server

  • ● HTTP

Yes; Standard and user pages

  • ● HTTPS

Yes; Standard and user pages

PROFIBUS DP master

  • ● Number of connections, max.

48; for the integrated PROFIBUS DP interface

Services

  • — PG/OP communication

Yes

  • — S7 routing

Yes

  • — Data record routing

Yes

  • — Isochronous mode

Yes

  • — Equidistance

Yes

  • — Activation/deactivation of DP slaves

Yes

OPC UA

  • ● OPC UA Server

Yes; Data access (read, write, subscribe), runtime license required

  • — Application authentication

Yes

  • — Security policies

Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256

  • — User authentication

“anonymous” or by user name & password

Further protocols

  • ● MODBUS

Yes; MODBUS TCP

Media redundancy

  • ● Switchover time on line break, typ.

200 ms; For MRP, bumpless for MRPD

  • ● Number of stations in the ring, max.

50

Isochronous mode

Isochronous operation (application synchronized up to terminal)

Yes; With minimum OB 6x cycle of 125 µs

Equidistance

Yes

S7 message functions

Number of login stations for message functions, max.

32

Program alarms

Yes

Number of configurable program alarms

10 000

Number of simultaneously active program alarms

  • ● Number of program alarms

1 000

  • ● Number of alarms for system diagnostics

200

  • ● Number of alarms for motion technology objects

160

Test commissioning functions

Joint commission (Team Engineering)

Yes; Parallel online access possible for up to 10 engineering systems

Status block

Yes; Up to 16 simultaneously (in total across all ES clients)

Single step

No

Status/control

  • ● Status/control variable

Yes

  • ● Variables

Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters

  • ● Number of variables, max.

  • — of which status variables, max.

200; per job

  • — of which control variables, max.

200; per job

Forcing

  • ● Forcing, variables

Peripheral inputs/outputs

  • ● Number of variables, max.

200

Diagnostic buffer

  • ● present

Yes

  • ● Number of entries, max.

3 200

  • — of which powerfail-proof

1 000

Traces

  • ● Number of configurable Traces

8; Up to 512 KB of data per trace are possible

Interrupts/diagnostics/status information

Diagnostics indication LED

  • ● RUN/STOP LED

Yes

  • ● ERROR LED

Yes

  • ● MAINT LED

Yes

  • ● Connection display LINK TX/RX

Yes

Supported technology objects

Motion Control

Yes; Note: The number of axes affects the cycle time of the PLC program; selection guide via the TIA Selection Tool or SIZER

  • ● Number of available Motion Control resources for technology objects (except cam disks)

10 240

  • ● Required Motion Control resources

  • — per speed-controlled axis

40

  • — per positioning axis

80

  • — per synchronous axis

160

  • — per external encoder

80

  • — per output cam

20

  • — per cam track

160

  • — per probe

40

  • ● Positioning axis

  • — Number of positioning axes at motion control cycle of 4 ms (typical value)

100; At 40% CPU load due to Motion Control

  • — Number of positioning axes at motion control cycle of 8 ms (typical value)

128; At 40% CPU load due to Motion Control

Controller

  • ● PID_Compact

Yes; Universal PID controller with integrated optimization

  • ● PID_3Step

Yes; PID controller with integrated optimization for valves

  • ● PID-Temp

Yes; PID controller with integrated optimization for temperature

Counting and measuring

  • ● High-speed counter

Yes

Highest safety class achievable in safety mode

Probability of failure (for service life of 20 years and repair time of 100 hours)

  • — Low demand mode: PFDavg in accordance with SIL3

< 2.00E-05

  • — High demand/continuous mode: PFH in accordance with SIL3

< 1.00E-09

Ambient conditions

Ambient temperature during operation

  • ● horizontal installation, min.

0 °C

  • ● horizontal installation, max.

60 °C; Display: 50 °C, at an operating temperature of typically 50 °C, the display is switched off

  • ● vertical installation, min.

0 °C

  • ● vertical installation, max.

40 °C; Display: 40 °C, at an operating temperature of typically 40 °C, the display is switched off

Ambient temperature during storage/transportation

  • ● min.

-40 °C

  • ● max.

70 °C

Configuration

Programming

Programming language

  • — LAD

Yes; incl. failsafe

  • — FBD

Yes; incl. failsafe

  • — STL

Yes

  • — SCL

Yes

  • — GRAPH

Yes

Know-how protection

  • ● User program protection/password protection

Yes

  • ● Copy protection

Yes

  • ● Block protection

Yes

Access protection

  • ● Password for display

Yes

  • ● Protection level: Write protection

Yes

  • ● Protection level: Read/write protection

Yes

  • ● Protection level: Complete protection

Yes

Cycle time monitoring

  • ● lower limit

adjustable minimum cycle time

  • ● upper limit

adjustable maximum cycle time

Dimensions

Width

175 mm

Height

147 mm

Depth

129 mm

Weights

Weight, approx.

1 988 g