Transaction Parameters (Generic Data Mode); Produce Transactions - HMS Anybus Communicator User Manual

6.4 Transaction Parameters (Generic Data Mode)

6.4.1 Produce Transactions

Parameter
Offline options for fieldbus
Update mode
Update time (10 ms)
Anybus Communicator PROFINET User Manual
Description
This parameter specifies the action to take for this transaction if the higher level network
goes offline. This affects the data that is sent to the sub-network.
• Clear
Data is cleared (0) on the sub-network if the higher level network goes offline
• Freeze
Data is frozen on the sub-network if the higher level network goes offline
• NoScanning
Stop subnet scanning for this transaction if the higher level network goes offline
The update mode for the transaction:
• Cyclically
The transaction is sent cyclically at the interval specified in "Update Time".
• On data change
The data area is polled for changes at the time interval defined by Update time.
A transaction is issued when a change in data is detected.
• Single shot
The transaction is sent once at startup.
• Change of state on trigger
The transaction is sent when the trigger byte has changed. This feature enables the
control system to notify the gateway when to issue a particular transaction. To use this
feature correctly, the control system must first update the data area associated with
the transaction, then increase the trigger byte by one. The location of the trigger byte
is specified by the "Trigger byte address" parameter. The trigger byte is checked at the
interval specified in the "Update time" parameter.
This parameter specifies how often the transaction will be issued in steps of 10ms
(relevant only when "Update mode" is set to "Cyclically", "On data change" or "Change of
state on trigger").
The entered value is multiplied by 10. An entered value of 5 will result in 50 ms.
Transactions 32
Doc: HMSI-27-309, Rev. 3.11