ETS-Lindgren 2090 Controller - Manual (Page 84)

Using the GPIB Command Set with the Model 2090 Model 2090 Multi-Device Controller
Byte Register is T
Service Request E
TRUE ue to a command from the controlling
The *S E GPIB command is used to set the
the regis
urrent s
tatus Byte
re.
service request, a
controlling progra
lu
y issuing t
Serial Poll. When
Master Summary Status (MSS) bit. When
Bit
RUE and the corresponding bit in the
nable Register makes a transition from
FALSE to d
program. R
value of
query the c
ter and the *SRE? command is used to
etting.
The S Register is the heart of the status
reporting system.
represented he
All other status registers and queues are
This register has the ability to generate a
llowing the controller to inform the
m that a condition exists which needs
attention. The va
either b
e of the Status Byte Register can be read
he *STB? command or by performing a
reading the register using *STB?, bit six
returns the
reading the register using a Serial Poll, bit six returns the
value of the Request Service (RQS) flag. The following
table gives a description of each bit.
Name Description
0 - Device
Dependent Error
(DDE)
Set when the logical AND of the
Device Dependent Error Register and
the Device Dependent Error Enable
Register is non-zero. This is a
2090/2190 specific status bit.
1 - Undefined
2 - Undefined
3 - Undefined
4 -
Available
Message
(MAV)
Set when there is data in the device
output queue waiting to be read over
the GPIB.
5 - ical AND of the Event
Status Register and the Event Status
Enable Register is non-zero.
Event Status Bit Set when the log
(ESB)
6 - Master Summary Set when the logical AND of the
84 © ETS-Lindgren– April, 2006
Revision G– P# 399199