Realtime clock operation 4.2. Realtime clock The following commands are related to setting and reading out the built-in realtime clock. 4.2.1. Date Set date Hex 1Bh 1Bh 53h 44h D NP 3Ah M NP 3Ah Y NP 3BH Decimal 27 27 83 68 D NP 58 M NP 58 Y NP 59 ASCII ESC ESC S D D NP : M NP : Y NP ; This command sets the date in the realtime clock. Day (D NP ), month (M NP ) and year (Y NP ) are transferred to the terminal. Example: 1Bh 1Bh 53h 44h 31h 34h 3Ah 31h 32h 3Ah 39h 30h 3Bh The date is set to the 14/12/90. Read date Hex 1Bh 1Bh 47 44h Decimal 27 27 71 68 ASCII ESC ESC G D The current date is transferred to the host computer.
Day, month, and year are transferred, separated by a full stop charac- ter (“x”, Hex 2Eh), and followed by a CR character (Hex 0Dh). 4 - 17