10-12 Status Structure Model 6485 Picoammeter Instruction Manual
→ Semantic error — Model 6485 received a command that was misspelled or received
an optional IEEE-488.2 command that is not implemented.
→ The instrument received a Group Execute Trigger (GET) inside a program message.
• Bit B6, user request (URQ) — Set bit indicates that the LOCAL key on Model
6485 front panel was pressed.
• Bit B7, power ON (PON) — Set bit indicates that Model 6485 has been turned off and
turned back on since the last time this register has been read.
Operation event status
The used bits of the operation event register (Figure 10-5) are described as follows:
• Bit B0, calibrating — Set bit indicates that Model 6485 is calibrating.
• Bit B5, waiting for trigger event (Trig) — Set bit indicates that Model 6485 is in
the trigger layer waiting for a TLINK trigger event to occur.
• Bit B6, waiting for arm event (Arm) — Set bit indicates that Model 6485 is in the
arm layer waiting for an arm event to occur.
• Bit B10, idle state (Idle) — Set bit indicates Model 6485 is in the idle state.
Figure 10-5
Operation event status
OR
Operation Event
Enable Register
Idle = In Idle
Trig = Waiting for trigger event
Arm = Waiting for arm event
Cal = Calibrating
& = Logical AND
OR = Logical OR
&
&
&
Cal
(B0)
&
1024
(2
10
)
32
(2
5
)
Decimal
Weights
OPC
(B0)
[:EVENt]?
64
(2
6
)
Cal
(B0)
(B4-B1)
Trig
(B5)
Arm
(B6)
Idle
(B10) (B9-B7)
(B15-B11)
:CONDition?
Trig
(B5)
Arm
(B6)
Idle
(B10) (B9-B7)
(B15-B11)
Operation Condition
Regiser
Operation Event
Regiser
(B4-B1)
Trig
(B5)
Arm
(B6)
Idle
(B10) (B9-B7)
(B15-B11)
1
(2
0
)
:ENABle <NRf>
:ENABle?
To OPC bit
of Status Byte
Register
(B4-B1)
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