FieldServer FS-8700-08 - Manual (Page 17)

FS-8700-01 Modbus RTU/ASCIIFS-8700-01_Modbus_RTU.doc Driver Manual Page 17 of 21
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
Zero_Data - The FieldServer will respond, but with the data values set to zero. If the user normally expects
non-zero values, this option will signal the offline condition without disrupting communications.

FFFF_Data - The FieldServer will respond, but with the data values set to FFFF (hex). If the user normally
expects other values, this option will signal the offline condition without disrupting communications.
When configured as a Server this parameter can force a desired exception response as follows:

Node_Offline_Message or Exception_4 - FieldServer's response will be Exception 4

Gateway_Path_Unavailable or Exception_A - FieldServer's response will be Exception A

Gateway_Device_Failed or Exception_B - FieldServer's response will be Exception B
Example:
Nodes
Node_Name , Node_ID , Protocol , Node_Offline_Response , Port
DEV11 , 11 , Modbus_RTU , No_Response , -
DEV12 , 12 , Modbus_RTU , Old_Data , -
DEV15 , 15 , Modbus_RTU , Zero_Data , -
DEV16 , 16 , Modbus_RTU , FFFF_Data , -
DEV17 , 17 , Modbus_RTU , Exception_4. , -
DEV18 , 18 , Modbus_RTU , Gateway_Path_Unavailable , -