Output Queue And Error Queue - YOKOGAWA wt1600 User Manual

Bit 12 OVR5
(Element4 Measured Data Over)
Bit 13 OVR6
(Element6 Measured Data Over)
Bit 14 OVRM
(Motor Measured Data Over)
Bit 15 POV (ElementX Input Peak Over) Set to "1" when peak over is detected in any of the elements.
The filter is applied to each bit of the condition register seperately, and can be selected from the following.
Note that the numbering of the bits used in the filter setting differs from the actual bit number (1 to 16 vs. 0 to
15).
Rise The bit of the extended event register becomes "1" when the bit of the condition register changes from "0" to "1".
Fall The bit of the extended event register becomes "1" when the bit of the condition register changes from "1" to "0".
Both The bit of the extended event register becomes "1" when the bit of the condition register changes from "0" to "1", or
from "1" to "0".
Never The bit of the extended event register is disabled and always "0".
6.5 Output Queue and Error
Queue
Overview of the Output Queue
The output queue is provided to store response
messages to queries. For example, when the
WAVeform:SEND? query is sent to request output of the
acquired waveform, the response data will be stored in
the output queue until it is read out.
The example below shows that data is stored record
by record in the output queue, and is read out oldest
item first, newest item last. The output queue is
emptied in the following cases (in addition to when
read-out is performed).
• When a new message is received from the controller
• When dead lock occurs (page 4-2)
• When a device clear command (DCL or SDC) is
received
• When power is turned ON again
The output queue cannot be emptied using the *CLS
command. To see whether the output queue is empty
or not, check bit 4 (MAV) of the status byte.
D1
IM 760101-11E
6.4 Extended Event Register/6.5 Output Queue and Error Queue
Set to "1" when the voltage or current of element 5 is over the range.
Set to "1" when the voltage or current of element 6 is over the range.
Set to "1" when the speed or torque of the motor input is over the range.
D2
D1 D2
D1
Overview of the Error Queue
The error queue stores the error No. and message
when an error occurs. For example, if the controller
sends an incorrect program message, the number,
"113, "Undefined header"", and the error
message are stored in the error queue, when the error
is displayed.
The contents of the error queue can be read using the
STATus:ERRor? query. As with the output queue,
messages are read oldest first, newest last (refer to the
previous page).
If the error queue becomes full, the final message will
be replaced by message
"350, "Queue overflow"".
The error queue is emptied in the following cases (in
addition to when read-out is performed).
• When the *CLS command is received
• When power is turned ON again
To see whether the error queue is empty or not, check
bit 2 (EAV) of the status byte.
6
6-5