Omron CJ1W-CT021 Operation Manual page 28

Specifications and Characteristics
1-3-2 Functional Specifications
Item
Number of Counters
Counter Type
Maximum Input Frequency
Maximum Response Time
Signals per Counter
Digital I/O
Input Signal Types
Counter Control using CIO-
software bits
Digital Input Functionality
Output Control Mode
8
CJ1W-CT021
2
• Simple Counter (refer to 3-2-1 "Simple Counter")
• Circular Counter (refer to 3-2-2 "Circular Counter")
• Linear Counter (refer to 3-2-3 "Linear Counter")
The Counter Type can be chosen by DIP switch at the front of the Unit. By
default the Counters are set to Simple Counter (refer to 2-1-3 "Counter Type
Switch").
500 kHz, refer to 1-3-3 "Input Specifications" for details
0.5 ms (refer to Appendix C "Description of the Response Time")
Phase A, B and Z
• 2 Digital Inputs (I0 and I1):
Every Digital Input can be assigned to a Counter. In this way one Counter
can be controlled by a maximum of 2 Digital Inputs (refer to 3-4 "Digital Input
Functions")
• 2 Digital Outputs (O0 and O1):
The Unit Output Pattern represents the 2 Digital Outputs and 30 Soft
Outputs (refer to 3-5 "Output Control").
• Phase Differential (multiplication x1), (multiplication x2)*
1
x4)* (refer to 3-3-1 "Phase Differential")
• Up/Down* 1
(refer to 3-3-2 "Up & Down")
1
• Pulse & Direction*
• Open Gate / Start Counter: Counter is enabled to count pulses
• Close Gate / Stop Counter: Counter is disabled to count pulses
• Preset Counter: Preset Value can be set in CIO
• Reset Counter to zero
• Capture Counter Value: Captured Counter Value can be read using IORD-
instruction (refer to 4-5-3-1 "Captured Counter Value")
Refer to 3-4 "Digital Input Functions".
• Gate* 1
• Reset* 1
• Preset* 1
1
• Capture*
• Stop/Capture-Continue*
• Stop/Capture-Reset/Continue*
• Capture/Reset* 1
• Enable Reset* 1
1
• Disable Reset*
For every Function the corresponding action can be triggered on a rising- or on
a falling edge (refer to 3-4 "Digital Input Functions").
• Automatic Output Control in:
1
• Range Mode*
(Refer to 3-5-1 "Range Mode")
• Comparison Mode*
• Rate Range
• Manual Output Control (Refer to 3-5-3 "Manual Output Control")
(refer to 3-3-3 "Pulse & Direction")
1
1
1
(Refer to 3-5-2 "Comparison Mode")
Section 1-3
1
and (multiplication