41
E3X-DRT21-S
User’s Manual
Sect
ion 3
Dev
ic
e
Net
Co
m
m
u
n
ic
at
io
n Se
tt
ings
Section 3
DeviceNet Remote I/O Communications
■
Remote I/O Communications 2CH Mode (SW1=ON, SW2=OFF)
Up to 16 sensors can be connected. The IN area occupies 2CH of the master.
mCH
m + 1CH
• Number of connected sensors:
The number of currently registered sensors is shown in a range from 1 to 10 in
hexadecimal (between 1 and 16 in decimal).
• Number of sensors that can be communicated with:
The number of current sensors that can be communicated with is shown in a range from
0 to 10 in hexadecimal (between 0 and 16 in decimal).
When failure occurs, you can confirm how many sensors are communicating normally.
• Sensor communications error:
When the registered number of connected sensors doesn’t match the number of sensors
that can be communicated, or when communications with a sensor fail after the
connection with the sensor is established, it is turned ON.
• Communicating with a sensor: When the communication with a sensor is established, it
is turned ON.
Bit
Description
Bit
Description
00
Unit No. 1 ON/OFF output data
08
Unit No. 9 ON/OFF output data
01
Unit No. 2 ON/OFF output data
09
Unit No. 10 ON/OFF output data
02
Unit No. 3 ON/OFF output data
10
Unit No. 11 ON/OFF output data
03
Unit No. 4 ON/OFF output data
11
Unit No. 12 ON/OFF output data
04
Unit No. 5 ON/OFF output data
12
Unit No. 13 ON/OFF output data
05
Unit No. 6 ON/OFF output data
13
Unit No. 14 ON/OFF output data
06
Unit No. 7 ON/OFF output data
14
Unit No. 15 ON/OFF output data
07
Unit No. 8 ON/OFF output data
15
Unit No. 16 ON/OFF output data
Bit
Description
Bit
Description
00
Number of connected sensors (2
0
)
08
Number of sensors that can be communicated with (2
0
)
01
Number of connected sensors (2
1
)
09
Number of sensors that can be communicated with (2
1
)
02
Number of connected sensors (2
2
)
10
Number of sensors that can be communicated with (2
2
)
03
Number of connected sensors (2
3
)
11
Number of sensors that can be communicated with (2
3
)
04
Number of connected sensors (2
4
)
12
Number of sensors that can be communicated with (2
4
)
05
Always 0
13
Communicating with the Mobile Console
06
Always 0
14
Sensor communications error
07
Always 0
15
Communicating with Sensor