DVP-ES3 Series Programming Manual 6.17 Real-time Clock Instructions 6.17.1 List of Real-time Clock Instructions The following table lists the Real-time Clock instructions covered in this section. _6 6-476 Instruction code Pulse API Function 16-bit 32-bit instruction 1600 TRD – Reading the time 1601 TWR – Writing the time 1602 T+ – Adding the time 1603 T- – Subtracting the time 1604 HOUR – – Running-time meter 1605 TCMP – Comparing the time 1606 TZCP – Time zone comparison 1607 DST – Daylight saving time 1608 WWON – – Setting up weekly working time setup