Omron CJ1W-CT021 Operation Manual page 30

Specifications and Characteristics
Item
IORD- and IOWR-instructions
Interrupts of Outputs
Interrupts of Digital Inputs
Error History Log Function
10
CJ1W-CT021
3
Run-time* configuration and operation of the High-speed Counter Unit is
possible by using IORD- and IOWR-instructions. The following data can be
read or written:
• DM-configuration data*
• Range- and Comparison Data*
data")
• Captured Counter Value (refer to 4-5-3-1 "Captured Counter Value")
• Rate History Log File Data*
• Counter Value (refer to 4-5-3-3 "Counter Value")
• (Re) Configure High-speed Counter Unit*
Unit")
• Error Clear (refer to 4-5-3-5 "Error Clear Command")
• The Digital Outputs and the Soft Outputs of the Unit Output Pattern can all
be configured to generate interrupts to the CJ1-H/CJ1M CPU Unit*
to 4-6-1 "Outputs Generating Interrupts".
• The Digital Inputs can all be configured to generate interrupts to the CJ1-H/
1
CJ1M CPU Unit* . Refer to 4-6-2 "Digital Inputs Generating Interrupts".
• Stores up to 30 error log records (refer to 5-2 "Error codes")
*1
This specification item is only supported for Circular and Linear Counters (not
for Simple Counters). For a complete overview of the differences between Sim-
ple and Circular/Linear Counters refer to 1-4 "Quick Start Up Reference Guide".
*2
To activate external interrupt tasks, a CJ1-H or CJ1M CPU Unit must be used.
CJ1 CPU Units do not support external interrupt tasks. To activate external
interrupt tasks in a CJ1-H CPU Unit, the CJ1W-CT021 High-speed Counter
Unit must be in one of the five positions immediately to the right of the CJ1-H
CPU Unit. For CJ1M CPU Units, the CJ1W-CT021 High-speed Counter Unit
must be in one of the three positions immediately to the right of the CJ1M CPU
Unit. No external interrupt tasks can be activated if the Unit is in any other posi-
tion (i.e., 6th Unit position or further away from the CJ1-H CPU Unit, or 4th Unit
position or further away from the CJ1M CPU Unit), or if it is on a CJ-series
Expansion Rack.
Power Supply Unit
For CJ1-H CPU Units: External interrupt tasks can be
For CJ1M CPU Units: External interrupt tasks can be
1
(refer to 4-5-1 "DM-data")
1
(refer to 4-5-2 "Range- and Comparison
1
(refer to 4-5-3-2 "Rate History Log File data")
1
(refer to 4-5-3-4 "(Re) Configure
*2
CJ1-H or CJ1M CPU Unit
activated only from these Units.
activated only from these Units.
Section 1-3
1
. Refer
*2