KEYENCE DV-90 - Manual (Page 103)

5-5
5
E DV-90-IM
Ex
tend
ed Fun
c
tions
Setting the Input Limitation Function
The settings for the input limitation function are as follows:
• Direction of the input limitation
• Digit used as the start point of the input limitation
• Valid digits for input limitation
These settings can be specified in the PORT1 setting menu. When “Port2 Unit” is set to “Code
Reader”, it can be specified in the PORT2 setting menu.
zThe input limit direction can be selected from “Forward” or “Reverse”.
1 2 3 4 5 6 7 8 9 0 A B C
z“Limit Start” is used to determine the start point of the input limit.
The available range is 1 to 1000.
1 2 3 4 5 6 7 8 9 0 A B C
z“Limit Digits” is used to specify the number of digits to verify along the direction
of the input digit limitation.
The available range is 1 to 500.
The input limit is only for the part “5678” of the data “1234567890ABC”.
Note
No matter which direction is specified, the communication is output from the top of the string.
When there is data with a different number of digits, it must be specified, paying attention to
the direction of the input limit.
Forward Reverse
Fifth digit from the top of the data
Fifth digit from the top of the data Four digits worth
1 2 3 4 5 6 7 8 9 0 A B C
Example
Input limit direction “Forward” Input limit direction “Reverse”
Limit Start “5” Limit Start “6”
Limit Digits “4” Limit Digits “4”
1 2 3 4 5 6 7 8 9 0 A B C 1 2 3 4 5 6 7 8 9 0 A B C
5-2 Input Digit Limitation Function