45
IEEE-488 Communication Option
Serial Poll Status Byte
Serial Poll Status Byte
The serial poll status byte (spoll byte) can be used to obtain information about the state
of the instrument. Bit 7 of the status byte is reserved for SRQ. The remaining bits are
used to provide custom information as shown in the table below.
Note
The fill mode indication is only accurate if the fill mode toggle switch on the
front panel is in the AUTO position. There is no remote indication available
for the OFF or ON manual override selections.
Bit
ON
OFF
1
HI relay on
HI relay off
2
A relay on
A relay off
3
B relay on
B relay off
4
LO relay on
LO relay off
5
Fill mode off
(controller output de-entergized)
Fill mode on
(controller output energized)
6
Data ready
No data available
7
Service Request (SRQ)
No SRQ
8
Not used
Not used
Summary of Contents for 186
Page 3: ...2 Introduction ...
Page 13: ...12 Installation Configuring power ...
Page 23: ...22 Calibration Approximate Calibration ...
Page 29: ...28 Operation Sensor contamination ...
Page 37: ...36 RS 232 Communication Data Logger Option Error Codes ...
Page 47: ...46 IEEE 488 Communication Option Serial Poll Status Byte ...
Page 55: ...54 Virtual Instrument Operation Running multiple GPIB devices ...
Page 65: ...64 Index ...