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Model PDP DPU Installation, Preparation and Adjustment
Interaction Page 10
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Last Bad Module =
PUT
8489F4
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Figure 7-3. Interaction Page 10, I/O Module Status and Event Queue Pointers.
7-6
The I/O Module Status display shows all possible addresses on the I/O bus.
The status of each address (active, standby, communication problem or no
module) is highlighted in either green, yellow, red or black.
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EVENT QUEUE POINTERS
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Green (Model IOP I/O) or blue (Field I/O) highlighting indicates that an I/O
module is present at that address and there are no communication problems
with the module. In a redundant I/O backup configuration, the module
address can assume this color in both the active and inactive DPUs.
Yellow highlighting indicates that the system is set up for shared I/O (two
DPUs with a common I/O string) and a module is present at that address.
The module address is highlighted in yellow for the inactive DPU and will
change to green when the DPU assumes control.
Red highlighting indicates that some process (Data Blocks, Process Inputs,
Control Blocks, or ExCEL) is trying to access a module at that address but
either no module is present or the module has a communication problem. If
the communication problem is intermittent, the address will only be red for 4
Metso Automation MAX Controls • • • • 277573 • • • •
I/O MODULE STATUS
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