Monitoring Operation And Modifying Data; Bit/Word Monitor - Omron SYSMAC C2000H Operation Manual

Monitoring Operation and Modifying Data

7-2

Monitoring Operation and Modifying Data

7-2-1

Bit/Word Monitor

252
The simplest form of operation monitoring is to display the address whose
operand bit status is to be monitored using the Program Read or one of the
search operations. As long as the operation is performed in RUN or MONI-
TOR mode, the status of any bit displayed will be indicated.
This section provides other procedures for monitoring data as well as proce-
dures for modifying data that already exists in a data area. Data that can be
modified includes the PV (present value) and SV (set value) for any timer or
counter.
All monitor operations in this section can be performed in RUN, MONITOR,
or PROGRAM mode and can be cancelled by pressing CLR.
All data modification operations except for timer/counter SV changes are per-
formed after first performing one of the monitor operations. Data modification
is possible in either MONITOR or PROGRAM mode, but cannot be per-
formed in RUN mode.
The status of any bit or word in any data area can be monitored using the
following operation. Although the operation is possible in any mode, ON/OFF
status displays will be provided for bits in MONITOR or RUN mode only.
The Bit/Word Monitor operation can be entered either from a cleared display
by designating the first bit or word to be monitored or it can be entered from
any address in the program by displaying the bit or word address whose
status is to be monitored and pressing MONTR.
When a bit is monitored, it's ON/OFF status will be displayed (in MONITOR
or RUN mode); when a word address is designated other than a timer or
counter, the digit contents of the word will be displayed; and when a timer or
counter number is designated, the PV of the timer will be displayed and a
small box will appear if the completion flag of a timer or counter is ON. When
multiple words are monitored, a caret will appear under the leftmost digit of
the address designation to help distinguish between different addresses. The
status of TR bits and SR flags (e.g., the arithmetic flags), cleared when
END(01) is executed, cannot be monitored.
Up to six memory addresses, either bits, words, or a combination of both,
can be monitored at once, although only three of these are displayed at any
one time. To monitor more than one address, return to the start of the proce-
dure and continue designating addresses. Monitoring of all designated ad-
dresses will be maintained unless more than six addresses are designated. If
more than six addresses are designated, the leftmost address of those being
monitored will be cancelled.
To display addresses that are being monitored but are not presently on the
Programming Console display, press MONTR without designating another
address. The addresses being monitored will be shifted to the right. As
MONTR is pressed, the addresses being monitored will continue shifting to
the right until the rightmost address is shifted back onto the display from the
left.
During a monitor operation the up and down keys can be pressed to incre-
ment and decrement the leftmost address on the display and CLR can be
pressed to cancel monitoring the leftmost address on the display. If the last
address is cancelled, the monitor operation will be cancelled. The monitor
operation can also be cancelled regardless of the number of addresses being
monitored by pressing SHIFT and then CLR.
Section 7-2