We are using cRIO 9024 and NI 9403 Module to make I2C communication with PH sensor - PH EZO CIRCUIT of Atlas scientific (documentation attached).
We didn't success to communicate with the sensor in this method, however by using NI USB 8451 we had a success so we know the sensor is working fine.
When we connected the outputs of the NI 9403 (SDA & SCL) to oscilloscope and we saw that the output in a general view is as expected (pictures attached).
We are now thinking the problem is in the timing and get over the NI9403 Latency.
We of course connected 4.7KOhm Pull-Up resistors to SDA and SCL inputs as required.