4-11
I/O Allocation
Section 4-2
Rem
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/O
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4-2-6
Input Data
The input data specific to Digital Controllers with DeviceNet communications
that is not allocated in the variable area of the E5AR/ER-DRT is described
here.
General Status (Setting: 2)
• The Communications Power Voltage Monitor Error Flag indicates the sta-
tus of the power being supplied through the DeviceNet communications
cable.
• The Unit Maintenance Flag is set to 1 when the total ON time or run time
of the E5AR/ER-DRT Digital Controller exceeds the monitor value.
4-2-7
Output Data
Output data specific to DeviceNet that is not allocated to the E5AR/E5ER vari-
able area is described here.
Output Enable Bits
Output Enable Bits are used when settings are written to the OUT Area, e.g.,
when SP are set or RUN/STOP is executed using operation commands. The
area for Output Enable Bits is always allocated in the first word of the OUT
Area.
When Output Enable Bits are set to 0 (OFF), the settings and bits set in the
OUT Area are not transmitted and, therefore, nothing is executed. The set-
tings can be executed by setting the Output Enable Bits to 1 (ON). Writing is
not executed if the Output Enable Bits are not set to 1.
Setting Output Enable Bits prevents unintentional setting changes and
enables various settings in the OUT Area to be enabled simultaneously. For
example, a new value may written to a word for which a SP has already been
set. If the Output Enable Bits are set to 1 and then set to 0, no SP will be writ-
ten even if one is accidentally allocated. (However, care must be taken
because writing is enabled if Output Enable Bits are set to 1.)
Furthermore, if set values are written for all the channels and the Output
Enable Bits are set to 1, the set values will all be enabled at once.
Note
When Output Enable Bits are set to 1, data allocated to the OUT Area is writ-
ten whenever it changes.
Bit
7
6
5
4
3
2
1
0
0
1
0
0
0
E5AR/E5ER-DRT Unit Maintenance Flag
0: Within range (less than monitor value)
1: Outside range (monitor value or higher)
Communications Power Voltage
Monitor Error Flag
0: Normal (higher than monitor value)
1: Error (monitor value or lower)
Not used.
Summary of Contents for E5AR
Page 2: ...E5AR ER Digital Controller DeviceNet Communications User s Manual Produced February 2004...
Page 3: ...iv...
Page 29: ...2 6 Functions Supported Only by the E5AR ER DRT Section 2 2 Operating Procedures...
Page 79: ...6 8 Message Communications Performance Section 6 2 Communications Performance...
Page 91: ...B 6 Mounted Objects Appendix B Appendix B...
Page 95: ...C 4 DeviceNet Connection Hardware Appendix C Appendix C...
Page 97: ...G 2 Glossary...
Page 100: ...Index I 3 W wiring 3 10 precautions 3 9 write mode 4 12...
Page 101: ...I 4 Index...