Because of the lower price point of PWM controllers they are often less configurable than MPPT controllers. Still, PWM controllers with configurable setpoints do exist.

The TriStar TS-45, and TS-60 PWM professional grade controllers are configurable with a cable.

Note that the MPPT variants are also called TriStar but the model numbers are TS-MPPT-45, TS-MPPT-60, and there is also a 30A TS-MPPT-30 unit for which there is no PWM counterpart.

The Duo (two battery) line is configurable with MSView.

The Victron PWM-pro is fully programmable by USB adapter and free software.

manual (pdf)

EPsolar's Landstar B series is configurable with an MT-50 display. The B series comes in 10A, 20A, and 30A models.

It is rebranded as the MISOL B series at parity or slight markup.

It is also rebranded as the Victron BlueSolar PWM-Pro 10A, 20A, and 30A at 2x the price. The MT-50 is rebranded as the Victron Remote Panel for BlueSolar PWM-Pro almost 3x the price.

The Viewstar BN series is configurable from the controller or from MT-50. It is available in 10A, 20A, 30A, 45A, and 60A models.

It is rebranded as the Renogy Viewstar in 20A and 30A models at 2x the price.

The Xantrex C series by Schneider Electric has field-adjustable setpoints for Vabs and Vfloat using knobs inside the case.

It is available in 12A, 35A, 40A, and 60A models.