Chapter 4 Operation
4.6 How to Use Internal DIO
139
In DO No. 339, establish the setting for the switchover of user display and system display.
Display of user SEL program is conducted when DO No. 339 = 1
Display of normal system is conducted when DO No. 339 = 0
When setting is established DO No. 339 = 1, and DO No. 338 gets set to 1, User Display and
System Display should be conducted one after another.
All of the digital dots of the seven-segment LED display flash as “8. 8. 8. 8. ” during the user
display.
DO No. 340 to 346 correspond to the 7-seg display bits.
Display is shown no the 7-seg LED by ON-edge (= 0, = 1, = 0) of DO No. 337.
(The 7-seg pattern set in DO No. 340 to 346 is shown on the digit set in DO No. 332 and 333.)
Caution: When DO No. 338 is set to 0 and DO No. 339 is set to 1;
User display is shown and no switchover in every one second.
System display (error display) should be conducted when it occurs an
operation cancel level error, cold start level error or system shutdown level
error.
System display (error display) would not be conducted when it occurs a
message level error or is in a condition other than an error occurrence (data
flash ROM under writing, etc.).
When it is required to display the condition in a message level error or in a
condition other than an error occurrence, set DO No. 338 to 1 to make it mutual
display.
Caution: In the parameter setting at the delivery, the port numbers are as shown above.
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