Map Descriptor Example 2 - Polling - FieldServer FS-8700-115 Driver Manual

FS-8700-115 ASCII Driver (General Purpose)
4.5 Map Descriptor Example 2 – Polling
In this example, we provide a Map Descriptor to send a poll to a remote device. The Map_Descriptor will send ten characters from the Data_Array DA_Poll.
This Data Array could be preloaded in the configuration file or its contents could be changed by other protocols. This Map Descriptor is used to send data only,
no data is stored by this Map Descriptor.
Map_Descriptors
Map_Descriptor_Name , Data_Array_Name
MD_Poll , DA_Poll
The name of the
Map Descriptor
Data Array from
names do not need
where the polling
to be unique but
data is extracted.
unique names may
facilitate trouble
shooting.
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, Data_Array_Offset , Function
, 0 , Rdbc
The Driver will send this
poll continuously at time
intervals specified by the
scan interval.
st
The 1 character of
polling data will be
extracted from this
position in the
Data_Array. Subsequent
data will be extracted
from consecutive
locations.
Page 10 of 13
, Node_Name , Scan_Interval , Length
, Node_A , 5s , 10
A maximum of
Specifies the time
10 characters will
interval at which
be sent to the
the driver should
remote device. .
issue the poll.
Poll_Msgs
, 3
The Driver will
send the poll
message three
times.