The DrvTrend driver is used to communicate with Trend Controls DUCs. The driver supports communication with IQ1, IQ2, IQ3 and IQ4 DUCs.
To use DrvTrend, an IO device is first created which is then used to communicate with the respective DUC. The driver does not have its own settings, these are set uniquely for each IO device that is created.
Installation
The installation of DrvTrend is done by selecting DrvTrend during the installation of Web Port.
See "Installation" for more information on the installation process.
IO-device
To use DrvTrend, first create an IO device as described in chapter "IO-devices" of the manual. In addition to general settings (see "general settings" in IO-devices), the following settings are available for an IO device of type DrvTrend:
| Setting: | Description: |
| CNC-hostname | Specifies the computer name or IP address of the DUC |
| CNC-port | Specifies the TCP port to use |
| CNC-address | Specifies the CNC address to use |
| Lan | Specifies the DUC's IQ network |
| Device address | Specifies the DUC node number |
| PIN-code | Indicates any PIN code for the DUC. (This is used when writing) |
| Read / Write type |
Basic 7-bit (IQ1 and IQ2) Extended 8-bit (IQ3 and IQ4) Basic 8-bit (for devices that do not support sub-object queries) |
| Read interval [ms] | Indicates the interval at which read and write transactions are done from/to the DUC |
| Query limit | Specifies the maximum number of grouped questions |
| Read timeout [s] | Indicates the maximum time a question may take |
| Link to | Provides the ability to communicate with multiple DUCs through a CNC |
Tags
To create tags, either an import can be made from the DUC (IQ3 and IQ4 only) or the tags can be created manually. For more information on how to create tag lists and tags, see chapter "Tags" of the manual.
Tip!
Create a tag list for each IO device. This is to get a good structure and easily find tags in the lists.
Tags associated with a DrvTrend IO device may have the following data types:
- DIGITAL
- REAL
Information:
The address bar indicates the path to the value desired in the DUC. The path can be read from the programming tool SET. Examples of paths:
S1/V Specifies the value of Sensor 1.
S1/h1/S Indicates the high alarm for Sensor 1
K1/V Specifies the value of Knob 1
L1/I Specifies the I-time for Regulator 1