How Communication Takes Place and I/O Image Table Mapping
3170-PDP
♦
FLEX Platform
FLEX I/O™ PROFIBUS Adapter
ProSoft Technology, Inc.
Page 21 of 152
August 23, 2007
node address changed – 1 bit
The adapter input status word bit descriptions are shown in the following table.
Bit Description Bit
Explanation
I/O Module
Fault
8
This bit is set (1) when an error is detected in slot position 1.
9
This bit is set (1) when an error is detected in slot position 2.
10
This bit is set (1) when an error is detected in slot position 3.
11
This bit is set (1) when an error is detected in slot position 4.
12
This bit is set (1) when an error is detected in slot position 5.
13
This bit is set (1) when an error is detected in slot position 6.
14
This bit is set (1) when an error is detected in slot position 7.
15
This bit is set (1) when an error is detected in slot position 8.
Reserved
1 to 7
Reserved
Node Address
Changed
0
This bit is set (1) when the node address switch setting has been
changed since power up.
Possible causes for an
I/O module fault
are:
transmission errors on the FLEX I/O backplane
a failed module
a module removed from its terminal base
incorrect module inserted in a slot position
the slot is empty
The
node address changed
bit is set when the node address switch setting has
been changed since power up. The new node address does not take affect until
the adapter has been powered down and then powered back up. Until this power
cycling occurs, the node address switches will not match the actual node
address.
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