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Chapter 8 Option Boards and Memory Module
XBC E-Type Main Unit
8-14
Ver. 1
2. Counter type
a. Linear counter
i. Linear Count range: -2,147,483,648 ~ 2,147,483,647
ii. If count value reaches the maximum value while increased, Carry will occur,
and if count value reaches the minimum value while decreasing, Borrow will
occur.
iii. If Carry occurs, count stops and increasing is not available but decreasing is
available.
iv. If Borrow occurs, count stops and decreasing is not available but increasing is
available.
3. Carry signal
a. When Carry signal occurs
i. When count range maximum value of 2,147,483,647 is reached during Linear
Count
b. Count when Carry Signal occurs
i. Count stops if Carry occurs during Linear Count.
c. Carry reset
i. ‘Carry reset’ instruction is not supported at option board. Reset ‘Carry’ by using
‘Preset’ instruction after making the counter value within counter range.
4. Borrow signal
a. When Count when Borrow signal occurs
i. When count range minimum value of -2,147,483,648 is reached during Linear
Count.
b. Count when Borrow signal occurs
i. Count stops if Borrow occurs during Linear Count.
c. Borrow reset
i. ‘Carry reset’ instruction is not supported at option board. Reset ‘Carry’ by using
‘Preset’ instruction after making the counter value within counter range.
Summary of Contents for XBC-DN10E
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