> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid/treiberauswahl/ifix-von-ge-ab-version-3_5.md).
# iFIX from GE as from version 3.5
#### Background
The measurement data connection and the alert data connection are implemented via the FIX EDA ("Easy Database Access") interface and linked by a process connection driver. The ACRON Provider cyclically polls the required data via the driver and saves them to the ACRON database.
#### Import external variables
Import predefined variables:
1. Set all parameters for the Provider
2. Start FIX
3. Run "Import from control system" in the "External variables" area
Select the variables you want to import into ACRON.
#### Syntax of external variable
The following syntax muss be observed for the external variable names:
| | |
| ----------------------- | ------------------- |
| VARIABLENAME | e.g. PV1 |
| NODE:VARIABLENAME | e.g. DEMO:PV1 |
| NODE:VARIABLENAME.FIELD | e.g. DEMO:PV1.F\_CV |
| VARIABLENAME.FIELD | e.g. PV1.F\_CV |
The "NODE:" entry is optional. If the entry is missing, ACRON adds the local node name of the current running FIX project during the runtime.
ACRON appends the following field extensions if none were specified:
| | |
| ----- | -------------------------------------------------------------------------------- |
| A\_CV | for alphanumeric variables |
| E\_CV | for numeric variables if the iFix version supports 64-bit data types |
| F\_CV | for numeric variables if the iFix version does not yet support 64-bit data types |
Note
The variable names must always be entered in UPPER CASE.
To enable the Provider to find the FIX libraries, the system variable ACRON m`PATH`ust contain the FIX installation path.
In the case of external variables for the service pulses, the ACRON Provider polls every change from FIX and proceeds as follows: If the value changes from ZERO to a different value, ACRON assumes that the unit has been switched on. If the value changes from not equal to ZERO to ZERO, ACRON assumes that the unit has been switched off. These events are stored in a binary intermediate file in the ACRON alert path, and imported from there by the ACRON Reporter or ACRON Data Transfer for the service module as required.
## Driver
### Driver file
Display the name of the selected driver and select a driver from the list of installed drivers
### Version
Version of the driver file
### Interface type
Display the driver interface type
### Data transfer type
Description of the data transfer type
## Driver parameters
### Record alerts (1/0) and name of iFIX AlarmQueue
Record alerts: 0 = No, 1 = Yes
Name of iFIX AlarmQueue: e.g. AC1
Example: `1 AC1`
`AlarmUserQ.exe` must then be started in the SCU with the following parameter: `ALMUSERQ.EXE /nAC1`
### Record alerts only for the following physical node
Alerts are recorded for the specified node; if you make no entry, alerts of all occurring nodes will be recorded.
### Alert filter
Filter constraint for the alerts to be included with wildcards. Only the variable names matching the filter are created and applied. Entries are not case-sensitive. If the field is left blank, the filter is not used.
### Poll only these nodes when browsing
Node names to poll.
## Settings
### Measure interval
This setting indicates the time interval in which values are polled by the control system/PLC. The minimum value depends on the efficiency of the corresponding interface and the number of external variables being logged.
Recommended entry: 1 - 5 sec.
### Polling delay after start
Start of data logging in seconds after the ACRON Provider has successfully established process communication. This is useful, for example, if the opposite party takes some time after a restart to initialize all the variables.
Recommended entry: 10 - 30 sec.
### Always display provider window on top
Provider windows are always displayed on top
### Activate test mode
Display a window with diagnostic messages
On startup the ACRON Provider opens a window with diagnostic messages. The log file is stored under the relevant provider name in the ACRON installation path, in the `Log` directory.
Note
As diagnosis mode heavily influences the performance of the application, and the recorded messages can normally only be evaluated by Technical Support, you should only activate it when prompted to do so by Support.
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