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9-2
Section
Troubleshooting
159
9-2
Troubleshooting
This section explains the causes of errors, how to determine their locations, and
the actions to be taken when errors occur in a MULTIPLE I/O TERMINAL.
When an error occurs in a MULTIPLE I/O TERMINAL, use the following
flowchart to find the cause of the error, determine its location, and take the
appropriate action. The numbers correspond to the numbers in the tables
beginning on page 160.
A MULTIPLE I/O TERMINAL status area is available in the first two words of the
MULTIPLE I/O TERMINAL input area in the Master. The contents and causes of
errors can be found by checking this area.
Status Area Configuration
The status area is configured as shown in the following diagram.
I/O Unit connection information
Error I/O Unit addresses
Registered I/O Unit addresses
0 wd
+1 wd
Check Flowchart
Status Area Error
Processing