Rockwell Automation AADvance Controller Configuration Guide - Manual (Page 258)

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11-10 Document: 553633
ICSTT-RM405f-EN-P
Issue 07
Configuration Guide (AADvance Controller)
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check box to set the variable type to REAL
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leave unchecked to select DINT.
4) Select the W button to connect to a variable.
5) If you need to disconnect a variable select the U button.
The 128 input peer board supports 128 analogue inputs instead of 16 but is otherwise
identical.
Note: The safety related data using 128 analogue channel blocks must be sent by two
different input/output block pairs and compared at the receiving input end to ensure
safety integrity. Alternatively it may be broken into 16 channel blocks.
Configure Digital Input Boards
1) Select the Digital Input Board
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The Peer-to-Peer Digital Input board editor dialog box is displayed.
2) Select the DXDI16 tab
3) Enter the data in the required fields.
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Refresh Timeout - Enter a value in the range 1 to 10000ms. This is the
maximum number of milliseconds allowed between successive refreshes of
input data before the data is declared invalid. Should the time be exceed and
the data declared invalid the input data will either retain the last received value
or revert to a fail-safe condition according to the Hold Last Valid Value
setting.
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The Refresh Timeout should be set to the longest delay before a fail-safe
action should be taken. This will be the Process Safety Time for the input data.
The corresponding Output board has a Refresh Interval parameter; this
controls how often data is sent to the Input board. The Refresh Interval
should be calculated to deliver at least two updates within the Refresh
Timeout, under worst case conditions. A Refresh Timeout which is too
short for the network size and complexity will make it impossible to deliver
fresh data often enough.
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Value in Failed State - Enter a value in the range -9.999999e+38 to
+9.999999e+38. This sets the control value to be adopted by the inputs when
the input has not been refreshed within Refresh Timeout and is therefore
declared invalid. Where the input corresponds to an integer the fractional part
if truncated. The value is always adopted at application start-up, though it will
not be used while the Hold Last Valid Value variable is set TRUE.