Product Overview
1-16
High Speed Counter Encoder Module User Manual
24-Bit Counters Non-Quadrature Mode Outputs (continued)
In non-recycle counting mode, Compare, Carry, and Borrow pulses are not
generated. Carry Toggle and Borrow Toggle signals are the cycle completion
indicators. At the end of a cycle, additional input count pulses are ignored.
One of the following conditions is required to restart the counter:
•
An external INDEX pulse (when WY21.07, or WY27.07, or both are
set).
•
A PLC counter reset (WY19.02 or WY19.06).
•
Setting the program flag (WY20.01).
In Divide-by-N counting mode, Compare, Compare Latch, or Compare
Toggle signals are not generated. The counter starts at the preset value and
counts to an overflow or underflow, generating a Carry or Borrow.
We recommend that Divide-by-N counting be done in the down count
direction only, with the Borrow Toggle signaling the underflow event. In the
non-quadrature, recycle counting mode, the Carry and Borrow pulses are
externally available, and can be used to cascade to another counter input.
Table 1-1
Binary Counting Outputs
Recycle Mode
Non-Recycle Mode
Quadrature
Non-Quadrature
Quadrature
Non-Quadrature
Compare
Compare
Carry Toggle
Carry Toggle
Compare Toggle
Compare Toggle
Compare Toggle
Borrow Toggle
Borrow Toggle
Compare Latch
Compare Latch
Compare Latch
Rollover
Carry and Borrow
Pulse
Table 1-2
Divide-by-N Counting Outputs
Recycle Mode
Non-Recycle Mode
Quadrature
Non-Quadrature
Quadrature
Non-Quadrature
Compare
Carry Toggle
Carry Toggle
Carry Toggle
Carry Toggle
Compare Toggle
Borrow Toggle
Borrow Toggle
Borrow Toggle
Borrow Toggle
Compare Latch
Rollover
Carry and Borrow
Pulse
Outputs in
Non-recycle Mode
Outputs in
Divide-by-N Mode