Status Byte Register - Fluke 8808A User Manual

8808A
Users Manual
Bit No.
0 Operation Complete (OPC)
1 Not used
2 Query Error (QYE)
3 Device-Dependent Error (DDE)
4 Execution Error (EXE)
5 Command Error (CME)
6 Not used
7 Power On

Status Byte Register

The STB is a binary-encoded register that contains eight bits. Note that the SRE uses bits
1 through 5 and 7 to set bit 6, the Master Summary Status (MSS) bit, as enabled by the
SRE. The eight STB bits are described in Table 4-7, and are read using the *STB?
command.
Bit No.
0 Not used
1 Not used
2 Not used
3 Not used
4 Message Available (MAV)
5 Event Status (ESB)
4-14
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Table 4-6. Description of Bits in ESR and ESE
Name
All commands before receipt of an *OPC command have
been executed. Interface is ready to accept another
message.
Always set to 0.
Attempted to read data from the Meter's output buffer when
no output was present or pending.
Or received a new command line before a previous query
was read.
Or input and output buffers were full.
Incorrect input during calibration.
Or RS-232 input buffer overflow.
Command was understood but could not be executed. This
can result from a command that contained an inappropriate
parameter.
Command was not executed because it was not
understood. This can result from a command that contained
a syntax error.
Always set to 0.
Power was cycled off and on since the last time the ESR
was read or cleared.
Table 4-7. Description of Bits in the Status Byte Register (STB)
Name
Always set to 0.
Always set to 0.
Always set to 0.
Always set to 0.
Data is available in output buffer. Bit set to 1 when
response to query placed in output buffer. Bit cleared (set to
0) when output terminator sent to host.
One or more of enabled events in the Event Status Register
have occurred. To determine which events have occurred,
send command *ERR? to read the Event Status Register.
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