HP 8530A Operating And Programming Manual page 358

Example 17: Read and Output Status Bytes
BIT # 7
Decimal 128
Value
BIT # 7
Decimal 128
Value
PRIMARY STATUS BYTE (#1)
6 5
64 32
EXTENDED STATUS BYTE (#2)
6 5
64 32
4 3
16 8
4 3
16 8
2 1
4 2
2 1
4 2
HP-IB Programming 18-29
0
1
0
1