# SINUMERIK Connection Properties

## `host` (string, required)

Hostname or IP of the Sinumerik device

Example: `"192.168.2.60"`

## `port` (integer, required)

Port of the Sinumerik device

Default: `4840`

Example: `4840`

## `resourcePath` (string)

Path of the Sinumerik server

Default: `""`

Example: `""`

## `username` (string)

Username for Sinumerik server

Example: `"user"`

## `password` (string)

Password for Sinumerik server

Example: `"user"`

## `timeout` (integer)

Timeout, in milliseconds

Default: `1000`

Examples: `1000`, `2000`

## `options` (object)

Properties of the `options` object:

#### `defaultSecureTokenLifetime` (integer)

Lifetime of the secure token. Specified in milliseconds.

Default: `3600000`

#### `requestedSessionTimeout` (integer)

OPC UA sessions may survive TCP connection breaks and are only deleted if no message from a client is received within the timeout period. Specified in milliseconds.

Default: `3600000`

#### `endpointMustExist` (boolean)

Specifies if the connection is strictly meant for the given endpoint. If false and the endpoint doesn’t exist, a reasonable default endpoint is automatically chosen.

Default: `false`

#### `messageSecurityMode` (string, enum)

This element must be one of the following enum values:

* `None`
* `Sign`
* `SignAndEncrypt`

Default: `"None"`

#### `securityPolicy` (string, enum)

This element must be one of the following enum values:

* `Aes128_Sha256_RsaOaep`
* `Basic128`
* `Basic128Rsa15`
* `Basic192`
* `Basic192Rsa15`
* `Basic256`
* `Basic256Rsa15`
* `Basic256Sha256`
* `None`
* `PubSub_Aes128_CTR`
* `PubSub_Aes256_CTR`

Default: `"None"`

#### `watchInterval` (integer)

For observing connection breaks, a connection watchdog runs regularly. Short intervals guarantee short notice on break but lead to higher load. Specified in milliseconds

Default: `30000`

#### `connectionStrategy` (object)

If a connection attempt failes, retries will be performed with growing delays in between. The following parameter control how these delays behave.

Properties of the `connectionStrategy` object:

**`maxRetry` (integer)**

Maximum number of connection retries in case of failure.

Default: `1000000000`

**`initialDelay` (integer)**

Delay of the first retry. Consecutive retries will randomly take longer delays.

Default: `1000`

**`maxDelay` (integer)**

Maximum delay of a retry.

Default: `60000`

**`randomisationFactor` (number)**

This parameter controls added randomisation to the retry attempts. Must be a number between 0 and 1. If set to 0, retries will be performed with exponentially growing delay until maxDelay. If set to 1, a maximum noise will be added to the retry delays.

Default: `0`

Additional restrictions:

* Maximum: `1`