Rate Measurement - Omron CJ1W-CT021 Operation Manual

Extra Functions
Configuring Programmable Output Pulses
O0: O1:
m+9 m+11
O0: O1:
m+10 m+12
3-7-2

Rate Measurement

84
Note The status of the Outputs is reflected in CIO (words n+14, n+15). If a Digital Out-
put is configured to have Programmable Output Pulse functionality, the actual
physical status of the Output (Turn ON Delay and/or Pulse Duration included) is
reflected in the corresponding bit in CIO.
15 14 13 12 11 10 9
15 14 13 12 11 10 9
Note 1. A Digital Output to which an Output ON-Delay or Output Pulse is applied will
turn OFF immediately after the corresponding Output (0-1) of the Output Pat-
tern has turned OFF. An Output Pulse ON-Delay or Output Pulse Duration in
progress will be reset immediately and the Digital Output is turned OFF or stays
OFF.
2. If an Output is switched ON manually (refer to 3-5-3 "Manual Output Control")
and Programmable Output Pulse functionality has been assigned to that Out-
put, then this functionality will not be applied to the Output. Instead, the Output
is switched ON immediately.
3.When applying an Output Pulse to a turn OFF a Digital Output, the output will
appear to be OFF, but internally it will be treated as ON until it is reset when the
range conditions are met or target is matched. If an attempt is made to set the
output, the system will assume that it is already ON and it will remain OFF. Par-
ticularly with target values, configure reset conditions for output carefully.
For every Counter the Rate of the incoming pulses can be measured, for Units
either in Range Mode or Comparison Mode. The measured Rate Values can be
used in the Ladder Program for Frequency or Rotational Speed calculations or for
monitoring purposes. Additionally, for every Counter two Rate Ranges can be con-
figured, both consisting of a Lower- and Upper Rate Range Limit. For every Rate
Range an Output Set & Reset Pattern can be defined to control all 32 outputs
accordingly. Set/Reset actions as defined in this Output Set & Reset Pattern to
control the Outputs, overrule the Unit Output Pattern for the corresponding Out-
puts. This allows you to detect too high or too low frequencies (and speeds) and
enables you to control the Outputs accordingly.
8 7 6 5 4 3 2 1
0001-9999
(BCD)
8 7 6 5 4 3 2 1
0001-9999
(BCD)
0
Output Pulse ON-Delay:
0000 = Normal Functionality
(BCD)
= Output Pulse ON-Delay in milliseconds
0
Output Pulse Duration:
0000 = Normal Functionality
(BCD)
= Output Pulse Duration in milliseconds
Section 3-7