Operation Check - Omron CX-PROCESS TOOL V5.2 - 12-2009 Operation Manual

Operation Check

4-6

Operation Check

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WARNING
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! Caution
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This section provides information on how to check the operation of the function
block data in the Loop Controller. The following two types of checks are possible.
1. Monitoring ITEM Data for Selected Function Blocks
2. Downloading individual ITEM Data settings
3. Operation Check of Block Diagrams
Checks if analog connections have been properly done.
It is possible to apply forced set/reset to analog signals.
4. Operation Check of Sequence Tables or Ladder Diagrams
Checks sequence tables or ladder diagrams execution.
It is possible to apply forced set/reset to contact ITEMs.
When the calibration function is executed, the MV (manipulated variable) will
change due to changes in the PVs (present values) input to the control block.
Therefore, set pseudo-input values to confirm safety when the MW changes
before executing the calibration function. Devices may perform unexpected
operations, resulting in serious accidents.
Compare the currently opened function block file and the function block data in
the Loop Controller before checking the operation of the function block data. If
the relationship between the block address and block model of the registered
function block is incorrect, the operation of the function block data cannot be
checked.
The operation of the function block data is checked according to the block ad-
dress and ITEM numbers. If the function block file is different from the function
block data in block model, the operation of the function block data will still be
checked as long as the function block file is the same as the function block data
in block address.
Analog or contact signals may be forcibly changed through the monitoring con-
trol of function block data. You must, however, confirm the safety of the whole
system, otherwise the system or machine may operated unexpectedly.
Do not apply function block data to practical use unless the suitability of the data
for the system is fully checked with the CX-Process Tool by selecting Operation
and Monitor Run Status from the Execute Menu.
Perform the checks in the following sections to check the operation of each part
of the system.
This is a simplified monitoring function designed to allow you to confirm opera-
tion (including tuning functions) when setting up a system. Continuous operation
for more than 24 hours may not be reliable.
Section 4-6