User`s manual

Site Configuration
5-44
Number of TX retries <0-9> [2]:
The number of times the Data Link layer retransmits a data frame for which ACK was not
received.
Number of TX retries upon BUSY ACK <0-9> [2]:
The number of times the Data Link layer retransmits a data frame for which BUSY ACK was
received (BUSY ACK is issued when all Data Link layer boxes of the switching node on are
full).
Interval between TX retries upon BUSY ACK <10-100> *100mSec... [40]:
The interval of time that should elapse before a data frame for which BUSY ACK was
received, is retransmitted.
Number of TX broadcast (Group call) retries <0-9> [0]:
The number of retries for broadcast frames. Since broadcast frames are not acknowledged,
specify a value greater than 0 to increase the chances of the frames reaching their destination.
A broadcast that activates a momentary operation (not latch!) is likely to reactivate the
operation if the number of TX broadcasts is greater than 0.
Interval between broadcast (Group call) retries <10-100>*100mSec [40]:
The period of time that should elapse between retries of broadcast frames (if the previous
parameter is not 0).
Force 'Local response' (1 to 1, NO address) [Force]:
It is possible to conduct a session based on Site ID/Link ID using Local if the port is of
Computer/Rslink type. Normally the port is defined for Local Response if the medium is not
“multidrop”. In any case, “local response” can be forced on a port if it is not “multidrop”. The
default value is based on the port type. It is recommended to leave the default as is.
Clock synchronization delay <0-50> mSec [0]:
The delay (applied to the channel) between the end of a transmission and the beginning of
reception, for clock synchronization purposes. The default depends on the selected medium.
However, the user can change it.
Max. number of addressable sites in a transmission <1-4> [4]:
Maximum number of units the Data Link layer is capable of addressing in a single
transmission. For “private conversation”, specify 1.
TX to failed RTU <0:DISABLE 0-30> Min [0]:
A period of time after which a failed link will be considered as being back in order, provided
the value of the next parameter (“Periodic check...”) is Disable. Or, the period of time after
which the Network layer issues a control frame to check the link, if the value of the next
parameter is Enable.
Periodic check of failed RTU [Disable]:
The valid values are: