User Manual - AnyBus® Communicator
DOC. ID: SDN-7061-059 Rev.1.51
2002-10-30
HMS INDUSTRIAL NETWORKS AB
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Minimum time between
broadcasts (10ms)
The value entered here is only valid if a broadcast command is specified in the scan-list and
the value specifies how long the ABC should wait after the broadcast was sent until the next
command in the scan-list will be sent. This time should be selected such that all slave-devices
connected to the ABC have time to finish the handling of the broadcast. The unit is millisec-
onds (ms) and the entered value is multiplied by 10, which means that the shortest time is 10
ms.
Offline options for field-
bus
This parameter defines the behavior of the ABC in case the fieldbus network goes off-line and
the selection affects the data that is sent out the sub-network
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- All data destined for the slave-devices is cleared (set to 0)
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- All data destined for the slave-device is frozen
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-The updating of the sub-network is stopped
Offline options for sub-
network
This parameter defines the behavior of the ABC in case the sub-network goes off-line and the
selection affects the data that is reported to the fieldbus master.
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- All data destined for the fieldbus-master is cleared (set to 0)
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- All data destined
Note: Offline options for subnetworks are configured separately for each transaction
Reconnect time (10ms)
This parameter specifies how long the ABC should wait before trying to re-connect a discon-
nected node. A node gets disconnected if the max number of retries is reached. The unit is mil-
liseconds (ms) and the entered value is multiplied by 10, which means that the shortest time is
10 ms.
Retries
This parameter specifies how many times a time-out can occur in sequence before the slave is
disconnected.
Timeout time (10ms)
This parameter specifies the time the ABC waits for a response from the slave-device. If this
time is exceeded the ABC re-sends the command until the “retries” parameter value is
reached.
The unit is milliseconds (ms) and the entered value is multiplied by 10, which means that the
shortest time is 10 ms.
Trigger byte address
This parameter specifies location in the internal memory buffer where the trigger byte is
located. In ABC a trigger byte is implemented to support non-cyclic data that means that the
fieldbus master has the ability to notify the ABC when it should send a specific command to a
slave.
To use this functionality correctly the fieldbus master should update the data area connected to
the trigger byte and then update the trigger byte. The trigger byte should be incremented by
one for activation.
This parameter has no affect unless the “Update mode” parameter is set to “Change of state
on trigger”.
Update mode
This parameter is used to specify when the command should be sent to the slave.
The following modes are possible:
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- The command is sent to the slave at the time-interval specified in the “Update
time” parameter.
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-The command is sent to the slave when the data-area connected to this
command changes.
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- The command is sent to the slave once at start-up.
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- The command is sent to the slave when the trigger byte
value is changed
Update time (10ms)
This parameter specifies with what frequency this command will be sent.
The unit is milliseconds (ms) and the entered value is multiplied by 10, which means that the
shortest time is 10 ms.
