Siemens S7
The Siemens S7 Device Driver allows Iotellect Server to connect with devices supporting the Siemens S7 communication protocol, typically Siemens S7 Programmable Logic Controllers (PLCs).
Supported S7 Device Type
The S7 Device Driver supports connections with a number of different PLC types:
S7-200 and S7-200 SMART
S7-300 and S7-400
S7-1200 and S7-1500
Connections with PLCs from other S7 types are not guaranteed, but in some cases can be accomplished by indicating S7-200 as the PLC Type in the Device Account Properties.
Driver Information
Driver Plugin ID: | com.tibbo.linkserver.plugin.device.s7 |
Global Settings
None defined.
User Level Settings
None defined.
Device Account Properties
Connection Properties
Connection settings define how Iotellect Server communicates with a Siemens S7 PLC. These settings may be accessed using the Edit Device Properties action of Device Context. The following connection properties are available:
Setting | Description |
PLC Type | Indicate the type of the Siemens PLC. Iotellect will attempt to determine the correct communication protocol variant and addressing scheme to use when connecting with the device. Select |
IP Address | Network IP address of the PLC. |
Port | Port number to use for communication with the PLC. |
Rack | Indicate the rack number where the CPU module is installed in a modular S7 PLC. |
Slot | Indicate the slot number of the CPU module within the rack. |
PDU Length | PDU (Protocol Data Unit) Length defines the maximum size of the data packet that can be exchanged in a single transaction between the Iotellect Server and the PLC. |
Tags
Tags are used to map specific data blocks of the PLC to a Device Context variable in Iotellect. Each tag is defined by the following settings:
Setting | Description |
Name | Name of the tag. This will be used as the name for the Device Context variable used to access the data retrieved from the data block, so it may contain only letters, digits and underscores. |
Description | Tag textual description. Will be used as the description of the Device Context variable. |
Address | The address of the data block in the device referred to by the tag. Consult device documentation to determine the relevant addressing syntax. |
Data Type | Indicate the type of data that will be retrieved by the data block. Possible options include:
|
Data Length | Applies only to the Data Types |
Device Assets
Assets are not supported by the driver.
Device Settings
Siemens S7 drivers create one device setting per tag.
Device Operations
Cold Restart
Sends a “Cold Restart” command to the device.
The function has no input parameters.
The function has no output parameters.
Hot Restart
Sends a “Hot Restart” command to the device.
The function has no input parameters.
The function has no output parameters.
Stop
Sends a “Stop” command to the device.
The function has no input parameters.
The function has no output parameters.
Copy RAM to ROM
Sends a “Copy RAM to ROM” command to the device.
The function has no input parameters.
The function has no output parameters.
Compress
Sends a “Compress” command to the device.
The function has no input parameters.
The function has no output parameters.
Upload File
Uploads a file from the device to Iotellect Server.
The input parameters of the function have the following format:
Name | Type | Description |
Block Address | String | Address of the memory block on the device from which to upload the file. |
Block Type | String | Data type of the memory block being uploaded. |
The output parameters of the function have the following format:
Name | Type | Description |
File Data | Data Block | File uploaded from the device |
Download File
Downloads a file from Iotellect Server to the device.
The input parameters of the function have the following format:
Name | Type | Description |
File Data | Data Block | File to download to the device |
Action Before Download | Integer | Optional field. Default value is Indicates the action to be performed by the device before downloading the file. Possible options are:
|
Action After Download | Integer | Optional field, default value is Indicates the action to be performed by the device after downloading the file. Options are same as Action Before Download. |
The function has no output parameters.
Read ID
Retrieves the unique identifier (ID) of the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | String | Unique identifier of the device. |
Read Version
Retrieves the firmware version of the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | String | Firmware version of the device. |
Read Type
Retrieves the type or model of the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | String | Type or model of the device. |
Read Manufacture Date
Retrieves the manufacture date of the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | String | String representation of the manufacture date of the device. |
Read Program Name
Retrieves the name of the program currently loaded on the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | String | Name of the program currently loaded in the device. |
Read Alarm Information
Retrieves alarm information from the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Long | Value indicating alarm information. Consult device documentation to interpret the value. |
Read Alarm Number
Retrieves the number of alarms from the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Long | Number of alarms read from the device. |
Read Status
Retrieves the device status.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Integer | Integer describing the device status. |
Description | String | Description of device status. |
Read Work Mode
Retrieves the current work mode of the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Integer | Integer describing the device work mode. |
Description | String | Description of device work mode. |
Read Run Time
Retrieves the total run time of the device since it was last started.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Double | Time elapsed since device was started. Check device documentation to determine the unit of time to apply when interpreting this value. |
Read Remain Time
Retrieves the remaining time for a specific operation or task being performed by the device.
The function has no input parameters.
The output parameters of the function have the following format:
Name | Type | Description |
Value | Double | Time remaining for operation to be completed. Check device documentation to determine the unit of time to apply when interpreting this value. |
Device Events
No events are provided by the driver.
Connection Handling
This driver marks the device Online if a TCP connection to the device is successful.
Synchronization Details
Synchronization between Iotellect Server and Siemens S7 devices includes the following steps:
Creating a Settings Cache according to the list of Tags. Each variable is used to access a single one of the defined tags.
Reading the address of each tag and storing these values in the settings cache.
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