Loop Control Unit/Board Run/Stop - Omron CX-PROCESS MONITOR PLUS V2 - 01-2007 Operation Manual

System Monitor Screens

4-17-2 Loop Control Unit/Board Run/Stop

!WARNING
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Select a number to display the run/stop command for the relevant Loop
Control Unit/Board. Refer to 4-17-2 Loop Control Unit/Board Run/Stop in this
manual for operation details.
Click the M Button to display the CPU Unit's operation mode.
Click the E Button to display the Function Block Error dialog box. Refer to 4-17-4
Displays 1 Function Block Error Dialog Box Operations for details.
node
Shows the computer connected
to the CPU Unit.
Displays the connection type.
Before starting a Loop Control Unit, check the following points.
• Make sure that I/O Units used in combination are correctly mounted. Also,
make sure that the Unit number on the front of analog I/O Units agree with
the Unit number set using the field terminals. If the Unit numbers do not
agree, I/O (i.e., read and write) will be performed incorrectly, with data for
another Special I/O Unit (with the Unit number set using the field termi-
nal).
• Make sure that the initial settings for System Common Block within the
Loop Control Unit are correct. In particular, check that data memory (DM)
for node terminals within the CPU Unit used by the Loop Control Unit is
not allocated to other applications in the PLC as well. If the same DM has
been allocated twice, there is a risk that the PLC system will malfunction,
resulting in injury.
• When writing data to the I/O memory in the CPU Unit with function blocks
(e.g., using Send All Blocks, Expanded DO/AO Terminal to CPU Unit, or
DO/AO Terminal to CPU Unit), be sure that the words written to in the I/O
memory are not being used for any other purpose. If I/O memory words
are allocated to more than one purpose, the PLC system may act unex-
pectedly and cause injury.
Displays the connection status
Section 4-17