EXFO FLS-2600B Tunable Laser Source - Manual (Page 84)

Remote Control
76 FLS-2600B
Standard Status Data Structure
Standard Status Data Structure
The figure on the next page illustrates the four common Status and Enable
registers as defined by IEEE 488.2. This diagram is a useful aid in
understanding the general commands and how a service request (SRQ) is
generated. The four registers are described below:

Standard Event Status Register (ESR)
Bits Mnemonics Bit Value
7 Power on 128
6 Not used 0
5 Command error 32
4 Execution error 16
3 Device-dependant error 8
2 Query error 4
1 Not used 0
0 Operation complete 1