OFSOPC tag update period

Hi,

I use Citect SCADA 2018 with OFSOPC as tag data source. The OFS is collecting data from Modbus devices which are responding slow so I need to reduce the update period of these tags to 5s. I've tried:

- use in citect.ini file a [OFSOPC] section

[OFSOPC]

Cluster1.IOServer1.TEST_ARIAN.Group1UpdateRate = 5000

- adjusting the IOServer parameter MinUpdateRate

Both without result.

Can you, please, indicate me a way to do this?

Thanks,

Arian