Fluke 1523 Technical Manual page 76

1523, 1524 Reference Thermometer
Serial Commands - Alphabetic Listing
bits 1 to 7:
bits 9 to 15:
STATus:MEASure:ENABle <num>
68
bit 0: probe 1 new measurement
not used
bit 8: probe 2 new measurement
not used
bit 0: probe 1 not inserted
bit 1: probe 1 measurement under range
bit 2: probe 1 measurement over range
bit 3: probe 1 EEPROM fault (bad checksum or
version number is not supported)