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Chapter 2
Error Indication
Use of CHECK mode after error detection
If an error occurs, switch the transmission mode to the CHECK mode. In this mode, you can check the number
of connected nodes (I/O units) having a problem and the recognized addresses of the problem units.
Operation Description / Function Example 1 Example 2
Example 3
If error 3 is
detected
If error 4 is
detected
Press
key.
Displays the number of nodes (I/O
units) having a problem.
Press key.
Press key.
Repeatedly press this
key to display address-
es of all the connected
nodes.
Sequentially displays the addresses of
the problem I/O units in the order of as-
cending numbers.
Notes: 1) Use key to display the numbers in the reversed order.
2) Press and hold SELECT key ( key or key) to switch the displayed numbers at a rapid speed.
Number of connected
nodes (I/O units) having
a problem
Addresses of problem I/O units