Chapter 6 Applied Instructions 6.17 Real-time Clock Instructions 6.17.1 List of Real-time Clock Instructions 6-363 Instruction code Pulse API Function Step 16-bit 32-bit instruction 1600 TRD – Reading the time 3 1601 TWR – Writing the time 3 1602 T+ – Adding the time 7 1603 T- – Subtracting the time 7 1604 HOUR DHOUR – Running-time meter 7 1605 TCMP – Comparing the time 11 1606 TZCP – Time zone comparison 9