ProSoft Technology PS-QS-1x10-0781 - Manual (Page 45)

FieldServer Configuration Manual Page 45 of 90
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6.1.2 Alias_Node_ID
If you have two Nodes with the same Node_ID or your Node_ID’s are longer than 255, the Node Status Function as described above will not work correctly. In
such cases, each Node can be assigned an Alias_Node_ID which can be used to provide Node Status.
Typical Data Array Parameters are:
Section Title
Data_Arrays
Column Title
Function Legal Values
Data_Array_Name Provide name for Data Array Up to 15 alphanumeric characters
Data_Format Provides data format BIT
Data_Array_Length Number of Data Objects Minimum of 256 bits
Data_Array_Function* Special function for the Data Array Alias_Node_Status, None
6.1.3 Alias_Node_ID - Example:
A Data Array has been defined to report the status of the Nodes in the configuration using the Alias_Node_ID. Each Node that has been allocated an
Alias_Node_ID will have the corresponding bit in the Data Array set/unset based on the Node’s status.
Data Arrays
Data_Array_Name , Data_Format , Data_Array_Length , Data_Array_Function
Comm_Bits
, Bit , 900 , Alias_Node_Status
Nodes
Node_Name , Node_ID , Alias_Node_ID , Protocol , Port , Retry_Interval , Recovery_Interval
N1 , 1 , 3 , Modbus_RTU , P1 , 0.1s , 0.1s
N3 , 1 , 300 , Modbus_RTU , P2 , 0.1s , 0.1s
Alias_Node_Status differs from Node_Status as follows:

If a Node does not have an Alias_Node_ID defined then that Node’s status will not be reflected in the Data Array.

The Alias_Node_ID’s can be any positive whole number including zero up to the limit of the maximum Data Array size.