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The communication does not work with the Ethernet module of the DIRIS A. Why?

Try to "ping" the DIRIS A to check that the addressing is correct. In general, do not use the DHCP function. Check that there is no firewall on port 502 or 503 between the DIRIS and the computer/PLC

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How many devices is it possible to connect in RS485 behind the RS485/Ethernet module of DIRIS A40 (part number 48250204)?

There is no specific rule, the rules of the RS485 apply : max 32 devices without repeater, 247 with repeaters.

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After each reboot of the DIRIS A, the default parameters are set again. Why?

There is a profibus module on the DIRIS A, and the parameter "PARA" is set at "YES". Set it to "NO" to avoid this issue.

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A module is not recognised by the DIRIS A. Why ?

Either the module is for another type of DIRIS A (a module for DIRIS A40 plugged on a DIRIS A20 for example), or the module has been plugged in while the Diris was "ON" (it is recommended to connect the module when the Diris is "OFF"), or one pin of the module connector has been bent/broken when the module was plugged on the DIRIS A

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How long are values and configuration parameters saved in a DIRIS A?

10 years

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The DIRIS does not display single-phase voltages or powers per phase. Why?

This is because it is configured in a three-phase network (3BL/3NBL without neutral). To get single-phase voltages and powers per phases, a neutral is required : therefore a 4BL/4NBL network. Remember that this configuration is not recommended where there is no neutral connected to the DIRIS

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What products are compatible with Vertelis Vision?

DIRIS A10, A20, A40, A60, A80, N300/600, Ap, CMV2
COUNTIS Ci, Eci2, Eci3, E43, E44, E33, E34, E53