Omron CJ Series Operation Manual page 171

Slave Unit Duplicated Address Error
In any of the following cases, a Slave Unit duplicated address error will occur and *_SlavDupErr (Slave
Unit Duplicated Address Error Flag) in *_UnitSta (Status) will change to TRUE for the Slave Unit that
joined the network last.
The NS indicator on the front of the Master Unit will flash red and the seven-segment display will show
d0. Remote I/O communications will not stop.
• There is already a Slave Unit for which the same node address is set. (For example, both Slave Units
are set for node address N.)
Note An address duplication error will occur if the same node address is set for two Slave Units in the same allo-
cation area. This applies only if both are Input Slave Units or both are Output Slave Units.
• Different node addresses are set, but the same I/O ports are used by two different nodes.
(For example, a Slave Unit set for node address 0 has 24 inputs and a Slave Unit set for node
address 1 has 16 inputs. In this case, both Slave Units will be set to use the IN1 Area, which is not
allowed.)
Note As long as the I/O ports are not duplicated between the nodes, the IN Area and OUT Area for the same node
address can be assigned to Slave Units that are set for different node addresses.
(For example, a Slave Unit set for node address 1 can be allocated 16 outputs in the Output 1 Area, while an
Expansion Slave Unit set for node address 0 can be allocated 16 inputs in the Input 1 Area.)
• A Slave Unit was removed and then a Slave Unit of a different model started participating at the same
node address.
Illegal Configuration Error
If the permitted number of Repeater Unit segments is exceeded, the NS indicator on the front of the
Master Unit will flash red and the seven-segment display will show E5.
CJ-series CompoNet Master Unit Operation Manual for NJ-series CPU Unit (Cat. No. W493)
5 Remote I/O Communications
5
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