256
Timer and Counter Instructions
Section 5-16
The following table shows which values of C can be used with each function.
CTBL(63) Table
Comparison
If C is 000 or 001, INI(61) starts or stops comparison of the high-speed
counter’s PV to the comparison table registered with CTBL(63). Refer to
1-4-6
High-speed Counter 0 Interrupts
for details on table comparison.
PV Change
If C is 002, INI(61) changes the high-speed counter’s PV to the 8-digit value in
P1 and P1+1. The leftmost 4 digits are stored in P1+1 and the rightmost 4 dig-
its are stored in P1. A hexadecimal value of F in the most significant digit of
PV indicates that the PV is negative.
CPU Unit: Built-in High-speed Counter 0
The following table shows the possible 8-digit BCD values for the PV of high-
speed counter 0.
Pulse I/O Board: High-speed Counters 1 and 2
The following table shows the possible 8-digit BCD values for the PV of high-
speed counters 1 and 2 on a Pulse I/O Board.
Absolute Encoder Interface Board: High-speed Counters 1 and 2
The PV of absolute high-speed counters 1 and 2 cannot be changed.
High-speed Counter Board: High-speed Counters 1 to 4
The following table shows the possible 8-digit values (BCD or hexadecimal)
for the PV of high-speed counters 1 to 4 on a High-speed Counter Board.
C
P1
INI(61) function
000
000
Starts CTBL(63) table comparison.
001
000
Stops CTBL(63) table comparison.
002
New high-speed counter PV
Changes high-speed counter PV.
003
000
Stops pulse output.
Unit/Board
Function
Values of C
000
001
002
003
CPU Unit
High-speed counter 0
YES
YES
YES
---
Transistor Output Unit
Pulse output
---
---
---
YES
Pulse I/O Board
High-speed counters 1 and 2
YES
YES
YES
---
Pulse outputs 1 and 2
---
---
---
YES
Absolute Encoder
Interface Board
Absolute high-speed counters
1 and 2
YES
YES
---
---
High-speed Counter
Board
High-speed counters 1 to 4
YES
YES
YES
---
Mode
Possible values
Differential phase mode
F003 2768 to 0003 2767
Incrementing mode
0000 0000 to 0006 5535
Numeric range
Possible values
Linear counting
F838 8608 to 0838 8607
Ring counting
0000 0000 to 0006 4999
Numeric range
Possible values
BCD format
Hexadecimal format
Linear counting
F838 8608 to 0838 8607
F800 0000 to 07FF FFFF
Ring counting
0000 0000 to 0838 8607
0000 0000 to 07FF FFFF
