Started Estimating pump flow from current and pressure, then alarming on the residual

Food and beverage plant, CIP supply pumps. Management wants "predictive maintenance" after a pump failed mid-clean and we lost a shift. Only two of…

6 days, 15 hours ago

Replied to Packaging line 3: press, robot cell, inspection, packing and palletising on one drawing

How far can one drawing go? Our line is about three times this long.

2 weeks, 3 days ago

Replied to Access groups for a plant team, starting from the Groups tab

Did an operators group like this for our packaging line. The Permissions tab on the member page caught a mistake for me, I had…

1 month ago

Replied to Reading a 9-bit multidrop bus on a Pi gateway: can the UART even do that?

Kevin, it works. Address byte with mark, data with space, PARMRK on the receive side. Indicators 1, 2 and 4 answered first try, number…

1 month, 1 week ago

Replied to Reading a 9-bit multidrop bus on a Pi gateway: can the UART even do that?

Once a second per indicator is plenty. David, the 9th bit tells every node "this byte is an address, wake up and check if…

1 month, 1 week ago

Started Reading a 9-bit multidrop bus on a Pi gateway: can the UART even do that?

Food and beverage plant, old filling line. Four weighing indicators talk on a proprietary RS-485 multidrop bus from the 90s: 9600 baud, 9 data…

1 month, 1 week ago

Replied to SX1276 in FSK mode: what AFC, AGC, RSSI and FEI do, and why my links fail on cold mornings

TCXO modules exist for exactly this if a probe still misbehaves.

1 month, 2 weeks ago

Replied to Serhat, SCADA drawings and the field side under them

Food plant automation guy here, glad there's someone to ask about drawings. I'll have questions about showing valve states soon.

2 months, 1 week ago