Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 303)

10-4
IM 04L31A01-01E
10.2 Starting, Stopping, and Resetting the
Computation
This section explains how to start/stop computation, how to reset computation, and how
to clear the computation data dropout indication.
Procedure
Starting Computation
Press the START key .
When the START key is pressed, data acquisition to the internal memory also starts.
While computation is in progress, a computation icon is displayed in the operation
status display section.
• Starting Only the Computations
In operation mode, press the FUNC key to display the soft key menu, and press the
[Math START] soft key . This operation can be assigned to the USER key.
Stopping the Computations
1. Press the STOP key .
The following dialog box appears for confirmation.
2. Select [Mem+Math] and press the DISP/ENTER key .
When the DISP/ENTER key is pressed, data acquisition to the internal memory
also stops.
• Stopping Only the Computations
In operation mode, press the FUNC key to display the soft key menu, and press the
[Math STOP] soft key . This operation can be assigned to the USER key.
Note
When the computation is stopped, the computed data of the computation channel is held at
the value that existed immediately before. If data is being acquired to the internal memory,
the value held is written.
Resetting the Computations
1. In operation mode, press the FUNC key to display the soft key menu.
2. Press the [Math reset] soft key . The data of all computation channels is reset to
0. This operation can be assigned to the USER key.
Clearing the Computation Dropout Indication
In operation mode, press the FUNC key to display the soft key menu, and press the
[Math ACK] soft key .
[Math ACK] appears on the soft key menu only when a computation data dropout occurs (the
computation icon turns yellow). When cleared, the computation icon returns to a white color.
Note
Computation data dropout occurs when the computation process cannot be completed within
the scan interval. If computation dropout occurs frequently, lessen the load on the CPU by
reducing the number of computation channels or setting a longer scan interval. When
computation data is written to the internal memory, the data immediately before the computation
dropout is substituted as the computation data of the scan interval when dropout occurred.