Tools
5 browser-based engineering calculators for PLC, DCS, and plant-floor work. No JavaScript, no signup — bookmark one with its inputs filled in and it just works.
4–20 mA loop scaling
Convert between 4–20 mA, percent of span, and engineering units — both directions, with a loop check table.
Modbus RTU CRC & frame helper
Compute Modbus RTU CRC-16, append it to a frame, and convert between register numbers and protocol addresses.
OEE calculator
Availability × performance × quality from your shift numbers, with the six big losses mapped to each factor.
Subnet calculator
IPv4 network, broadcast, host range, and mask conversions for OT cells and machine networks.
Engineering unit converter
Pressure, temperature, flow, level, and length conversions in the units actually used on the plant floor.