Epson LQ-510 Technical Manual page 84

REV.-A
PRINCIPLES OF OPERATION
In order for this control to be performed easily, the circuit is constructed as shown in Figure 2-50. Further,
if the CRENB signal is made HIGH, the Td terminal becomes LOW, and stepping of the motor is forced to stop.
TdA
Figure 2-51. Phase Data Conversion Circuit
2-42
LQ-510