Siemens
01 2018
(4872) 700-366
skenergo@mail.ru

Article number

6AG1151-8FB01-2AB0

SIPLUS ET200S IM151-8F PN/DP

General information

HW functional status

01

Firmware version

V3.2

Engineering with

  • Programming package

STEP 7 V5.5 or higher, Distributed Safety V5.4 SP4

Supply voltage

Rated value (DC)

24V

permissible range, lower limit (DC)

20.4V

permissible range, upper limit (DC)

28.8V

Reverse polarity protection

Yes; against destruction

external protection for power supply lines (recommendation)

24 V DC/16 A miniature circuit breaker with type B and C tripping characteristics. Note: A 24 V DC/16 A miniature circuit breaker with type B tripping characteristics trips before and with type C tripping characteristic after the device protection fuse.

Mains buffering

  • Mains/voltage failure stored energy time

5ms

Input current

Inrush current, max.

1.8A; Typical

It

0.13As

from supply voltage 1L+, max.

352mA; 426 mA with DP master module

Output current

for backplane bus (5 V DC), max.

700mA

Power loss

Power loss, typ.

5.5W

Memory

Work memory

  • integrated

256kbyte; For program and data

  • expandable

No

  • Size of retentive memory for retentive data blocks

64kbyte

Load memory

  • Plug-in (MMC)

Yes

  • Plug-in (MMC), max.

8Mbyte

  • Data management on MMC (after last programming), min.

10y

Backup

  • present

Yes; Ensured by SIMATIC Micro Memory Card (maintenance-free)

CPU processing times

for bit operations, typ.

0.06s

for word operations, typ.

0.12s

for fixed point arithmetic, typ.

0.16s

for floating point arithmetic, typ.

0.59s

CPU-blocks

Number of blocks (total)

1024; (DBs, FCs, FBs); the maximum number of loadable blocks can be reduced by the MMC used.

DB

  • Number, max.

1024; Number range: 1 to 16000

  • Size, max.

64kbyte

FB

  • Number, max.

1024; Number range: 0 to 7999

  • Size, max.

64kbyte

FC

  • Number, max.

1024; Number range: 0 to 7999

  • Size, max.

64kbyte

OB

  • Description

See S7-300 operation list

  • Size, max.

64kbyte

  • 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; only for PROFINET

  • Number of startup OBs

1; OB 100

  • Number of asynchronous error OBs

6; OB 80, 82, 83, 85, 86, 87 (OB83 only for centralized I/O and 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

256

Retentivity

  • adjustable

Yes

  • lower limit

0

  • upper limit

255

  • preset

Z 0 to Z 7

Counting range

  • can be set

Yes

  • lower limit

0

  • upper limit

999

IEC counter

  • Number

Unlimited (limited only by RAM capacity)

S7 times

  • Number

256

Retentivity

  • adjustable

Yes

  • lower limit

0

  • upper limit

255

  • preset

No retentivity

Time range

  • lower limit

10ms

  • upper limit

9990s

IEC timer

  • present

Yes

  • Type

SFB

  • Number

Unlimited (limited only by RAM capacity)

Data areas and their retentivity

Flag

  • Number, max.

256byte

  • Retentivity available

Yes

  • 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.

32768byte; Max. 2048 bytes per block

Address area

I/O address area

  • Inputs

2048byte

  • Outputs

2048byte

of which distributed

  • Inputs

2048byte

  • Outputs

2048byte

Process image

  • Inputs, adjustable

2048byte

  • Outputs, adjustable

2048byte

  • Inputs, default

128byte

  • Outputs, default

128byte

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

16336

  • of which central

496

  • Outputs

16336

  • of which central

496

Analog channels

  • Inputs

1021

  • of which central

124

  • Outputs

1021

  • of which central

124

Hardware configuration

Number of modules per system, max.

63; Centralized

Mounting rail

  • Number of mounting rails that can be used

1

  • Length of mounting rail, max.

Station width: <= 1 m or < 2 m

Time of day

Clock

  • Hardware clock (real-time)

Yes

  • retentive and synchronizable

Yes

  • Backup time

6wk; At 40 C ambient temperature, typically

  • Deviation per day, max.

10s; 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

Clock continues to run with the time at which the power failure occurred

Operating hours counter

  • Number

1

  • Number/Number range

0

  • Range of values

0 to 2^31 hours (when using SFC 101)

  • Granularity

1 hour

  • retentive

Yes; Must be restarted at each restart

Clock synchronization

  • supported

Yes

  • to MPI, master

No

  • to MPI, slave

No

  • to DP, master

Yes; With DP master module

  • to DP, slave

Yes; With DP master module

  • in AS, master

No

  • in AS, slave

No

  • on Ethernet via NTP

Yes; As client

Interfaces

Number of industrial Ethernet interfaces

1

Number of PROFINET interfaces

3

Number of wireless interfaces

0

1. Interface

Interface type

PROFINET

Physics

Ethernet

Isolated

Yes

automatic detection of transmission rate

Yes

Autonegotiation

Yes

Autocrossing

Yes

Change of IP address at runtime, supported

Yes

Interface types

  • Number of ports

3; RJ45

  • integrated switch

Yes

Functionality

  • 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

  • Point-to-point connection

No

PROFINET IO Controller

  • Transmission rate, max.

100Mbit/s; full duplex

Services

  • PG/OP communication

Yes

  • Routing

Yes; With DP master module

  • S7 communication

Yes; with loadable FBs

  • Isochronous mode

Yes; OB 61; only for PROFINET IO

  • Open IE communication

Yes; Via TCP/IP, ISO on TCP, and UDP

  • IRT

Yes

  • MRP

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

Minimum value depends on communication share set for PROFINET I/O, on the number of I/O devices, and on the number of configured user data items.

  • Updating times

250 s to 512 ms (depends on operating mode; for more details, refer to Operating Instructions, "Interface Module IM151-8 PN/DP CPU")

Address area

  • Inputs, max.

2kbyte

  • Outputs, max.

2kbyte

  • User data consistency, max.

1024byte; with PROFINET I/O

PROFINET IO Device

Services

  • PG/OP communication

Yes

  • Routing

Yes

  • S7 communication

Yes; with loadable FBs

  • Isochronous mode

No

  • Open IE communication

Yes; Via TCP/IP, ISO on TCP, and UDP

  • IRT

Yes

  • MRP

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.

1440byte; Per IO Controller with shared device

  • Outputs, max.

1440byte; Per IO Controller with shared device

Submodules

  • Number, max.

64

  • User data per submodule, max.

1024byte

PROFINET CBA

  • acyclic transmission

Yes

  • cyclic transmission

Yes

Open IE communication

  • Number of connections, max.

8

  • Local port numbers used at the system end

0, 20, 21, 23, 25, 80, 102, 135, 161, 8080, 34962, 34963, 34964, 65532, 65533, 65534, 65535

2. Interface

Interface type

External interface via master module 6ES7138-4HA00-0AB0

Physics

RS 485

Isolated

Yes

Power supply to interface (15 to 30 V DC), max.

No

Functionality

  • MPI

No

  • PROFINET IO Controller

No

  • PROFINET IO Device

No

  • PROFINET CBA

No

  • PROFIBUS DP master

Yes

  • PROFIBUS DP slave

No

  • Open IE communication

No

  • Web server

No

DP master

  • Transmission rate, max.

12Mbit/s

  • Number of DP slaves, max.

32; Per station

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

No

  • 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

  • DPV1

Yes

Address area

  • Inputs, max.

2048byte

  • Outputs, max.

2048byte

User data per DP slave

  • Inputs, max.

244byte

  • Outputs, max.

244byte

Protocols

Open IE communication

  • TCP/IP

Yes; via integrated PROFINET interface and loadable FBs

  • Data length for connection type 01H, max.

1460byte

  • Data length for connection type 11H, max.

32768byte

  • several passive connections per port, supported

Yes

  • ISO-on-TCP (RFC1006)

Yes; via integrated PROFINET interface and loadable FBs

  • Data length, max.

32768byte

  • UDP

Yes; via integrated PROFINET interface and loadable FBs

  • Data length, max.

1472byte

Web server

  • User-defined websites

Yes

  • Number of HTTP clients

5

Media redundancy

  • Switchover time on line break, typ.

200ms; PROFINET MRP

  • Number of stations in the ring, max.

50

Isochronous mode

Isochronous operation (application synchronized up to terminal)

No

Communication functions

PG/OP communication

Yes

Data record routing

Yes; With DP master module

Global data communication

  • supported

No

S7 basic communication

  • supported

Yes; I blocks

  • User data per job, max.

76byte

  • User data per job (of which consistent), max.

76byte

S7 communication

  • supported

Yes

  • as server

Yes

  • as client

Yes; via integrated PROFINET interface and loadable FBs

  • 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)

Web server

  • supported

Yes

PROFINET CBA (at set setpoint communication load)

  • Setpoint for the CPU communication load

50%

  • Number of remote interconnection partners

32

  • Number of functions, master/slave

30

  • Total of all master/slave connections

1000

  • Data length of all incoming connections master/slave, max.

4000byte

  • Data length of all outgoing connections master/slave, max.

4000byte

  • Number of device-internal and PROFIBUS interconnections

500

  • Data length of device-internal und PROFIBUS interconnections, max.

4000byte

  • Data length per connection, max.

1400byte

Remote interconnections with acyclic transmission

  • Sampling frequency: Sampling time, min.

500ms

  • Number of incoming interconnections

100

  • Number of outgoing interconnections

100

  • Data length of all incoming interconnections, max.

2000byte

  • Data length of all outgoing interconnections, max.

2000byte

  • Data length per connection, max.

1400byte

Remote interconnections with cyclic transmission

  • Transmission frequency: Transmission interval, min.

1ms

  • Number of incoming interconnections

200

  • Number of outgoing interconnections

200

  • Data length of all incoming interconnections, max.

2000byte

  • Data length of all outgoing interconnections, max.

2000byte

  • Data length per connection, max.

450byte

HMI variables via PROFINET (acyclic)

  • Number of stations that can log on for HMI variables (PN OPC/iMap)

3; 2x PN OPC/1x iMap

  • HMI variable updating

500ms

  • Number of HMI variables

200

  • Data length of all HMI variables, max.

2000byte

PROFIBUS proxy functionality

  • supported

Yes

  • Number of linked PROFIBUS devices

16

  • Data length per connection, max.

240byte; Slave-dependent

iPAR server

  • supported

Yes

Number of connections

  • overall

12

  • usable for PG communication

11

  • reserved for PG communication

1

  • adjustable for PG communication, min.

1

  • adjustable for PG communication, max.

11

  • usable for OP communication

11

  • reserved for OP communication

1

  • adjustable for OP communication, min.

1

  • adjustable for OP communication, max.

11

  • usable for S7 basic communication

10

  • reserved for S7 basic communication

0

  • adjustable for S7 basic communication, min.

0

  • adjustable for S7 basic communication, max.

10

  • usable for S7 communication

10; with loadable FBs

  • adjustable for S7 communication, max.

10

  • total number of instances, max.

32

  • usable for routing

4; max.

S7 message functions

Number of login stations for message functions, max.

12; Depending on the configured connections for PG/OP and S7 basic communication

Process diagnostic messages

Yes; ALARM_S, ALARM_SC, ALARM_SQ, ALARM_D, ALARM_DQ

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

I/O

  • 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

Interrupts/diagnostics/status information

Alarms

Yes

Diagnostic functions

Yes

Diagnostics indication LED

  • for maintenance

Yes; MT

  • Bus fault BF (red)

Yes; BF-PN

  • Bus activity PROFINET (green)

Yes; P1-/P2-/P3-Link

  • Group error SF (red)

Yes

  • Monitoring 24 V voltage supply ON (green)

Yes

Potential separation

between PROFIBUS DP and all other circuit components

Yes

Permissible potential difference

between different circuits

75 V DC/60 V AC

Isolation

Isolation tested with

500 V DC

Degree and class of protection

IP degree of protection

IP20

Standards, approvals, certificates

CE mark

Yes

RCM (formerly C-TICK)

Yes

Ambient conditions

Ambient temperature during operation

  • min.

-25C; = Tmin

  • max.

60C; = Tmax

Altitude during operation relating to sea level

  • Ambient air temperature-barometric pressure-altitude

Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m)

Relative humidity

  • With condensation, tested in accordance with IEC 60068-2-38, max.

100%; RH incl. condensation/frost (no commissioning under condensation conditions)

Resistance

Use in stationary industrial systems

  • to biologically active substances according to EN 60721-3-3

Yes; Available soon

  • to chemically active substances according to EN 60721-3-3

Yes; Available soon

  • to mechanically active substances according to EN 60721-3-3

Yes; Available soon

Configuration

Configuration software

  • STEP 7

Yes; V5.5 or higher

Programming

  • 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; Optional

  • CFC

Yes; Optional

  • GRAPH

Yes; Optional

  • HiGraph

Yes; Optional

Know-how protection

  • User program protection/password protection

Yes

  • Block encryption

Yes; With S7 block Privacy

Cycle time monitoring

  • lower limit

1ms

  • upper limit

6000ms

  • adjustable

Yes

  • preset

150ms

Dimensions

Width

120mm; DP master module: 35 mm

Height

119.5mm

Depth

75mm

Weights

Weight, approx.

320g; DP master module: Approx. 100 g


















skener.ru

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30
DENDOR

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30
SKW-FS -

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 23

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30

Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30


Deprecated: Function eregi() is deprecated in /home/h101150-2/siemens71.ru/docs/kip/kip.php on line 30
SKW-FK -

  © " " 2007-2022
  (4872) 700-366  skenergo@mail.ru
.