// Spindle control, 0=off, 1 = CW, 2 = CCW
                'spc': (target, val) => {
                    if (val === 0) { // Spindle Off
                        _.set(target, 'modal.spindle', 'M5');
                    } else {
                        _.set(target, 'modal.spindle', (val === 1) ? 'M3' : 'M4');
                    }
                },
                // Spindle speed
                'sps': (target, val) => {
                    _.set(target, 'sps', val);
                },

    // Check whether the spindle and coolant commands are supported
    send('{spc:n}');
    send('{com:n}');
    send('{cof:n}');