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PLC Oil and Gas: Wellhead RTUs, ESD Logic, Tank Farms

September 13, 2026January 24, 2024 by PLC

Ladder rung for a wellhead ESD permissive: reset push button sealed in, high pressure and high level switches healthy, emergency stop normally closed, driving the SDV permissive coil

Wellpad controller choice, an ESD permissive rung that will not auto restart, Modbus poll budgets over radio, flow computers and tank farm level control.

Categories Articles Tags esd, modbus, oil and gas, rtu, tank farm

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