Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 90

Functions of General-purpose Slaves and Environment-resistive Slaves
Three-tier Terminal Block,
Environment-resistive
Terminal (DRT2-@04CL(-1)
Only) MIL Connector
Terminal, or Screw-less
Clamp Terminal
The points for measuring the operating time by contact I/O (ON/OFF) timing
are the same as for earlier models, but with these Terminals the operating
time can be monitored for any combination of contacts (IN-OUT, IN-IN, OUT-
OUT) in the Slave.
The trigger edge can be set for either ON to OFF or OFF to ON, and input and
output numbers can be freely combined for flexible settings.
Note With the I/O-type monitoring function, when the operating time was refreshed
the subsequent status might be OFF even if the previous status was ON. With
these Terminals, however, the ON status can be retained even when the oper-
ating time is refreshed.
• Measured time: 0 to 65535 ms (stored data: 0000 to FFFF Hex)
• Measuring unit: ms
Measured
time
Input contact B
(Example: Sensor)
Output contact A
(Example: Cylinder)
Input contact B
(Example: Sensor)
Note The precision of the measured time is ±6 ms when the ON delay is 0, and the
ON delay time is then added. The display resolution for the measured time
(ON delay 10 ms: ±16 ms), is displayed in 2-ms units when the ON delay is 2
ms or less, and in the measuring unit of the set ON delay time when 3 ms or
more. (If the ON delay is 5 ms, the display will be for 5 ms, 10 ms, 15 ms, and
20 ms.)
When using a Basic I/O Unit with an Expansion Unit, Sensor Connector I/O
Terminal, or Environment-resistive I/O Terminal, be careful of the following
point while making the settings.
Note 1. The Operation Time Monitor Flag is refreshed in real time, so even when
the set monitor value is exceeded and the Operation Time Monitor Flag is
turned ON, the flag will turn OFF without being held if the time from when
the next output changes to ON until the input changes to ON is within the
set monitor value range.
To precisely monitor when the monitor value is exceeded, set the flag in-
Sensor Connector I/O Terminal
Operating
time
Recorded in
Slave
Output contact A
(Example: Cylinder)
ON
OFF
ON
OFF
Measured time
Section 4-3
Problem?
The robot is operating
abnormally.
69