IDEC WindSRV - Manual (Page 65)

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Connection Timeout
This parameter, used primarily by Ethernet based drivers, controls the amount of time required to establish a socket
connection to a remote device. The device's connection time often takes longer than normal communications requests
to that same device. The valid range is 1 to 30 seconds. The default is typically 3 seconds, but can vary depending on
the driver's specific nature. If this setting is not supported by the driver, it will be disabled.
Note: Due to the nature of UDP connections, the connection timeout setting is not applicable when communicating via
UDP.
Request Timeout
This parameter is an interval used by all drivers to determine how long the driver will wait for a response from the
target device. The valid range is 100 to 30000 milliseconds. The default is typically 1000 milliseconds but can vary
depending on the driver's specific nature. The default timeout for most serial drivers is based on a baud rate of 9600
baud or better. When using the driver at lower baud rates, users may need to increase the timeout to compensate for
the increased time required to acquire data.
Fail After
This parameter is used to determine how many times the driver will retry a communications request before considering
the request to have failed and the device to be in error. The valid range is 1 to 10 retries. The default is typically 3
retries but can vary depending on the driver's specific nature. The number of retires configured for an application
depends largely on the communications environment.
Timeouts
If the environment is prone to noise induced communications failures, users may want to set up the devices for auto-
demotion or increase the number of retries that the driver performs. If increasing the number of retries, note that
when the driver encounters a communication issue, it will attempt to reacquire the data for any lost requests. Based on
the "Request timeout" and the "Fail after" count, the driver will pause on a specific request until either the device
responds or the timeout and retries have been exceeded. This can potentially decrease the communications of other
devices that have been configured on that channel. In this situation, it may be more appropriate to utilize the auto-
demotion functionality to optimize communications with other devices on the same channel.
Inter-Request Delay
This parameter is used to specify how long the driver will wait before sending the next request to the target device. It