Omron E3X-DRT21 Operation Manual page 37

DeviceNet Remote I/O Communications
15
Word m + 2
Word m + 3
Word m + 4
:
:
Word m + n
Word m + n + 1
26
14 13 12 11
Note 1. When the number of Sensors for incident light level monitoring is greater
than the value set for the number of Sensors connected for communica-
tions, the incident light level for the Sensors that are not connected will be
0000.
2. When the Mobile Console is connected, the incident light level data cannot
be read and the data will be 7FFF.
3. When an error occurs in communications with Sensors, the incident light
level data for the Sensors not communicating will be 7FFF.
4. The incident light level data for the E39-TM1 Terminal Block Units will be
7FFF. Monitoring incident light levels for Terminal Block Units causes a de-
lay in the data refresh cycle. To speed up the refresh cycle, mount the Ter-
minal Block Unit to the farthest position from the Fiber Amplifier Sensor
Communication Unit, and use the DeviceNet Configurator or an explicit
message to set the number of devices to be monitored for incident light lev-
el requirement so that the Terminal Block Unit is not monitored.
5. The refresh timing of Sensor ON/OFF data and incident light level data is
not synchronized. Even if incident light level data is read while monitoring
the ON/OFF status, the incident light level data may not be indicated for the
ON and OFF status. To read incident light level data at ON and OFF, use
the E3X-DA6-P Sensor. For details on this Sensor, refer to Appendix B
Monitoring Incident Light Levels of E3X-DA6-P Sensors.
10 09 08 07 06
Unit 1 incident light level
Unit 2 incident light level
Unit 3 incident light level
:
:
Unit n – 1 incident light level
Unit n incident light level
Number of Sensors for incident light level monitoring: n
Section 2-5
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