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Unit functions
Comparison with the
Registered Table
Note
The configuration information records the order that the SmartSlice I/O Units are con-
nected and the I/O size (input or output, number of bits) of each SmartSlice I/O Unit.
The I/O Unit model numbers are not recorded.
When DIP switch 1 (REGS) is ON and an I/O configuration table has been
registered in the Communication Unit, the actual I/O configuration is
automatically compared to the registered table when the power is turned ON.
A verification error will occur if a registered I/O Unit cannot join I/O
communication or an unregistered I/O Unit is detected.
In case of verification errors, the affected SmartSlice I/O Units will not
participate in I/O communication. I/O communication will start with the other
SmartSlice I/O Units.
Example of Comparison between Figure 1 and Figure 2
From left
#1
#2
#3
#4
Registered table
Figure 2
Pin 1 ON when power
was turned ON.
Registration table
Note
1 Register the I/O configuration table when all of the SmartSlice I/O Units are
communicating, i.e., when the PROFINET IO Communication Unit's TS indicator is
lit green.
2 A mismatch (verification error) with the registered table is indicated at the
PROFINET IO Communication Unit's TS indicator (flashing red). The error details
can be retrieved using the GRT1-PNT DTM. Also, the error history can be read with
an explicit message command.
I/O
Bits
Input
4
Input
4
Output
4
Mismatch
Output
2
Four
Four
contact
contact
inputs
inputs
PROFINET
Communications
#1
#2
Unit
The actual configuration is compared to the registered table.
Units that do not match the registered table do not participate
in I/O communications. I/O communications start with the other
I/O Units.
I/O
Bits
From left
#1
Input
4
#2
Input
4
#3
Output
2
#4
Output
2
Actual configuration
Two
Two
relay
relay
outputs
outputs
#3
#4
There are the same number of
Units, but the I/O data size does
not match, so a verification error
occurs and this I/O Unit does not
participate in communications.
Section 3-2
47
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Troubleshooting
