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Operating Instructions
Chapter
5
Flexi Soft Gateways
8012664/XB29/2013-06-11
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
41
Subject to change without notice
Ethernet gateways
Application requests (Polling) mode
In this mode the gateway will only send any data upon request (e.g. polling). Therefore the
application shall send request telegrams as per definition below and the gateway will
respond with telegrams structured as per definition below.
In order to prevent that the connection will be closed automatically, the application must
request data at least every 30 s when Polling mode is active.
Get input data set(s)
The request message is sent by an application to the gateway. The request message
telegram shall be structured as shown below:
Parameter
Length
Value
Command
WORD
00F1h
= Data set(s) request message
Request
data set 1
WORD
0 = Do not send data set 1
1 = Send data set 1
Request
data set 2
WORD
0 = Do not send data set 2
1 = Send data set 2
Request
data set 3
WORD
0 = Do not send data set 3
1 = Send data set 3
Request
data set 4
WORD
0 = Do not send data set 4
1 = Send data set 4
The response message is returned to the application by the gateway. The response
message telegram will be structured as shown below:
Parameter
Length
Value
Command
WORD
00F1h
= Data set(s) response message
Data set 1
length
WORD
0 = Data set not returned in data set(s) data field
Non-zero = Length of data set
Data set 2
length
WORD
0 = Data set not returned in data set(s) data field
Non-zero = Length of data set
Data set 3
length
WORD
0 = Data set not returned in data set(s) data field
Non-zero = Length of data set
Data set 4
length
WORD
0 = Data set not returned in data set(s) data field
Non-zero = Length of data set
Data set(s)
data
Array of
bytes
Data set(s) information
Note
Tab. 21: Get data set(s)
request
Tab. 22: Get data set(s)
response