Omron SMARTSLICE - 04-2008 Operation Manual page 44

Unit Functions
Comparison with the
Registered Table
Pin 1 ON when power
was turned ON.
Note
When DIP switch pin 1 (REGS) is ON and an I/O configuration table has been
registered in the Communications Unit, the actual I/O configuration is auto-
matically 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 communica-
tions or an unregistered I/O Unit is detected.
If there are verification errors, the affected Slice I/O Units will not join in I/O
communications. I/O communications will start with the other Slice I/O Units.
■ Example of Comparison between Figure 1 and Figure 2
I/O Bits
From left
#1 Input 4
#2 Input 4
#3 Output 4
#4
Output 2
Registered table
Figure 2
DeviceNet
Communications
Unit
Registration table
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.
(1) Register the I/O configuration table when all of the Slice I/O Units are
communicating, i.e., when the DeviceNet Communications Unit's TS indi-
cator is lit green.
(2) A mismatch (verification error) with the registered table is indicated at the
DeviceNet Communications Unit's TS indicator (flashing red) and can be
read from the Configurator. The error details can be read from the Con-
figurator or the error history can be read with an explicit message com-
mand.
I/O
From left
#1
Input
#2 Input
Mismatch Output
#3
#4 Output
Actual configuration
Four Four Two Two
contact contact relay relay
inputs inputs outputs outputs
#1
#2 #3 #4
Section 2-3
Bits
4
4
2
2
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
join in communications.
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