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148
BCL 558
i
Leuze electronic
Below, examples of what data exchange looks like when the entry function is used are
shown.
Figure 10.17: Data exchange sequence diagram - example 4
Output-Assembly
Input-Assembly
Output-Assembly
Input-Assembly
Output-Assembly
Input-Assembly
Allen-Bradley
:PLC
BCL 558i
:DEV
Example: command
New data
= 1
New entry (toggle bit)
= 1
Entry data length
= 1
Data
= "V"
Send
V
command
Output
version string
Example: user data
Send
+
command
Status
–
command
Result
Number of results
= 1
Activation status
= 0
User data / command
= 0
New result (toggle bit)
= 0
Result data length
= 1
Data
= "?"
Activation status
= 1
User data / command
= 1
New result (toggle bit)
= 1
Result data length
= 15
Data
= "BCL 358i V1.5.0"
New entry (toggle bit)
= 0
Entry data length
= 1
Data
= "+"
New data
= 1
New entry (toggle bit)
= 1
Entry data length
= 1
Data
= "-"