Table 7.1 (continued) 44 Mode Description Command count (inP = 3) Input functions: Input 1 – count, Input 2 - direction of count, Input 3 – reset, Input 4 – block Operating principle: Two inputs are used: counting pulses are applied to the first, the status of the second determines the direction of the count. If there is a "logical 0" at the second output, the counter increases its value, if there is a "logical 1" it decreases. In this type two setpoints can be set, meanwhile: • if the setpoints have the same sign, counter resets after reaching the setpoint, that is larger by module.
{t1–t2} – the decrease in the value of the counting register (impulse appears at the counting input 2); t3 – moment of switching of output 2 in case of coincidence of values of the counting register and setpoint 2; t4 – moment of switching of output 1 in case of coincidence of values of the counting register and setpoint 1 • if the setpoints have different signs, the counter is reset after reaching each value