User`s manual

78
(36)CH1 Overflow/underflow detection flag (Un\G1072)
• This memory stores the value indicating whether an overflow/underflow is detected in the counter.
• With the linear counter being selected for a counter format, the overflow detection flag is turned on (1) when
a count value exceeds 2147483647. The underflow detection flag is turned on (1) as well when a count
value falls below -2147483648.
• When either the overflow detection flag or the underflow detection flag is detected (1), CH1 Overflow/
underflow error (error code: 1100) will occur. Upon detection of the error, the module stops the count.
• By replacing the count value, the overflow detection flag or the underflow detection flag is turned off, and the
module resumes the count.
• The stored value is cleared to 0 by turning off and on Operating condition settings batch-change command
(Y01).
Though the overflow or underflow detection flag is turned off by replacing the count value, Error (X1E) and CH1 Latest error
code (Un\G1460) are not turned off nor cleared to 0 by doing so.
Reset the both of them by using CH1 Error reset command (Un\G1480) to turn it off or clear the value to 0.
b15
0
b14
0
b13
0
b12
0
b11
0
b10
0
b9
0
b8 b7
0
b6
0
b5
0
b4
0
b3
0
b2
0
b1
0
b0
0: Not detected
1: Detected
Overflow detection flag
Fixed to 0.
Fixed to 0.
Underflow detection flag