I/O Power Monitor; Contact Operation Counter Unit Ver. 1.0 Or Later - Omron NE1A-SCPU01 - 07-2009 Operation Manual

Common Functions
7-1-2

I/O Power Monitor

7-1-3 Contact Operation Counter
Overview
Setting the Contact Operations Alarm Threshold with the Network Configurator
The I/O power supply input can be monitored to confirm if it is normal. If an
I/O terminal on the NE1A-series Controller is set to any setting other than Not
Used and the normal power supply voltage is not input, the following items will
be displayed on the 7-segment display:
• Power supply for input not input normally: P4
• Power supply for output not input normally: P5
I/O power supply status can also be monitored in the General Status in
DeviceNet I/O communications.
This function can be used with Controllers with unit version 1.0 or later
(including Controllers that support EtherNet/IP). It counts the number of OFF
→ ON operations at a local input, test output, or local output and stores the
count internally in non-volatile memory.
• Count range: 0 to 4,294,967,295 operations (stored as 00000000 to
FFFFFFFF Hex)
• Count units: Operations
• Resolution: Depends on the cycle time.
Operations
Output device
(such as a relay)
This information can be monitored using the Network Configurator or explicit
messaging.
Note (1) The Contact Operation Counter function (Count) and Total ON Time Mon-
itor function (Time) cannot be used simultaneously on one bit. Select one
of these functions with the Maintenance Counter Mode Choice setting.
(2) When the Maintenance Counter Mode Choice setting is changed, the col-
lected data (operations count or total ON time) will be cleared.
(3) These functions do not operate when the I/O power supply is OFF.
The maintenance mode (Maintenance Counter Mode Choice) and alarm
threshold (Threshold Maintenance Counter) can be set for each local input,
test output, and local output terminal.
Unit Ver. 1.0 or Later
I/O power supply
Counting the output's OFF
ON operations:
Section 7-1
117