Specifications

Analog Output Modules
314
31007715 6/2008
Fallback States If an output channel’s fallback mode is predefined state, you may configure that
channel to go to any value in the range 0 to 32 000 (0 to 0x7D00), where 0
represents 0 mA and 32 000 represents 20 mA.
By default, both channels are configured to go to 0 VDC as their predefined fallback
state.
The data resolves to 12 bits. This means that the decimal or hexadecimal value
returned to you will be an increment of 8. If you enter a value that is not an increment
of 8, the system will round down to the next increment of 8. For example, if you enter
a value of 35 (0x23), the module will resolve to a value of 32 (0x20).
If you enter a value less than 0, the output will be set to 0 and an under-current error
will be returned (see p. 317).
To modify a fallback state from its default setting or to revert back to the default from
an on setting, you need to use the Advantys configuration software:
Note: If an output channel has been configured with hold last value as its fallback
mode, any value that you assign its fallback state parameter will be ignored.
Step Action Result
1 Make sure that the Fallback Mode value
for the channel you want to configure is
predefined state.
If the Fallback Mode value for the
channel is hold last value, any value
entered in the associated Predefined
Fallback Value row will be ignored.
2 Choose the data display format by either
checking or unchecking the Hexadecimal
checkbox at the top right of the editor.
Hexadecimal values will appear in the
editor if the box is checked; decimal
values will appear if the box is
unchecked.
3 Expand the + Predefined Fallback Value
Settings fields by clicking on the + sign.
Rows for Channel 1 and Channel 2
appear.
4 Double click on the channel value(s) you
want to change, then type in the desired
value(s).
-32 000 to +32 000 (0x8300 to 0x7D00)
The software displays the max/min
values of the range at the bottom of the
module editor screen.
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