Unscheduled map descriptor example – FieldServer ControlNet FS-8700-24 User Manual
Page 10

Driver Manual
Page 10 of 12
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4.3.4.
Unscheduled Map Descriptor Example
The following Map Descriptor will read data from a PLC5.
// Server Side Map Descriptors
Map Descriptors
Map_Descriptor_Name,
Data_Array_Name,
Data_Array_Offset,
Function,
Node_Name,
Block_Number,
PCCC_Type,
Address,
Length
A1,
DA_AI3,
0,
RDBC,
PLC5,
7,
SINT,
33,
5
The following Map Descriptor will send data to the card to allow other nodes to read the data contained in the FieldServer’s Data
Array.
// Server Side Map Descriptors
Map Descriptors
Map_Descriptor_Name,
Data_Array_Name,
Data_Array_Offset,
Function,
Node_Name,
Block_Number,
PCCC_Type,
Length
Address,
A1,
DA_AI3,
0,
WRBC,
Local,
7,
SINT,
5
125,
Offset into the file
Offset into the file
(N7:33)
(N7:125)
Active Map Descriptor
polls the PLC regularly
(change to WRBC to write)
Remote Node
name of the PLC
to poll
PLC 5 file number to
read (N7:33)
PLC 5 emulated file
number (7-39)
Node name whose MacId
matches the
System_Station_Address
FS-8700-24 ControlNet
Active Map Descriptor
transfers the data to or
from the card (change to
RDBC to read data
written by other nodes)