196 • 4-Series™ Control Systems Product Manual — Doc. 8559B
Response Reject Count for Secondary Connection
To set the default response reject count for the secondary control system connections, issue the
ethslvconnfnct command:
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Syntax: ethslvconnfnct [connectfailedcount]
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connectfailedcount - Sets the default secondary connect response reject count.
The secondary stops connecting after this number of connect response rejections.
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No parameter - Displays the current response reject count
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Example: ethslvconnfnct 6
The ethslvconnfnct command sets the number of response rejections that must occur
following unsuccessful connection attempts before the secondary reverts back to its normal
operating mode. The default count is 100, with each count occurring every 10 seconds.
For example, if the count is set to "6", the subordinate would revert back to normal roughly a
minute after the first response rejection.
This command can be used in a scenario where a particular IP address is active but does not have
a program that listens to that ID.
Secondary Connection Timeout
To set the default timeout setting for secondary connection, use the ethslvconntimeout
command:
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Syntax: ethslvconntimeout [timeoutinsec]
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timeoutinsec - Sets the duration (in seconds) before the secondary connection
times out and the secondary returns to its normal operating mode
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No parameter - Displays the current timeout settings
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Example: ethslvconntimeout 120
The ethslvconntimeout command sets the timeout duration before the secondary reverts back
to its normal operation mode if a TCP/IP connection to the primary cannot be established.
This command can be used in a scenario where a secondary attempts to connect to a
nonexistent IP address or to a primary that is not running.
Functional Behavior
Observe the following regarding functional behavior for primary-secondary mode:
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When operating in Ethernet secondary mode, the control system can address any installed
hardware, but it cannot address Ethernet devices.
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A 4-Series primary and 4-Series secpmdary each have their own independent Cresnet bus,
allowing the primary to assign Cresnet IDs 03 to FE and the subordinate to issue Cresnet
IDs 03 to FE, ultimately doubling the number of devices in the network.
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