Rockwell Automation T80020 Application Note Diagnostic Procedures - Manual (Page 9)

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AN-T80020 Diagnostics Procedure
Issue 12 Feb 11 AN-T80020 9
You will see a window similar to the ‘Programs’ window, now called the ‘Debug Programs’ window. This
gives access to online diagnostics. You cannot close this window. To end an online session, close the
Debugger window.
Open the I/O connection table by clicking on the icon shown above or menu Project | I/O connection.
Each module in the system has an equipment definition. Imagine this as a marshalling terminal rail,
with several blocks of terminals. These terminals are shown as icons appearing like screws, in several
different terminal blocks called boards. Each board is used to send data to or from the module, and
some of it is useful for diagnostics.
Each equipment definition is described in the product description for the module. Note that equipment
definition ttmrp is the processor (see PD-T8110B) and tci is the communications interface (but there is
no data on the tci boards).
Each equipment definition is allocated to a chassis and slot position where the module is. Click on the
first board in the definition (for the 8403 shown, click on DI). At the top of the data on the right is the
chassis and slot position.
If you are looking for an error code, find the definition with the same chassis and slot number as the
faulty module. Then click on the HKEEPING board and scroll down to the last three channels. In the
example above, the module is healthy. All three slices are reporting a zero error code.
If any of the last three channels is not zero, note the number.