Motorola 68P02958C00-B - Manual (Page 105)

Site Configuration
5-48
Task suspension between transmitted frames <0-1000> mSec [50]:
A delay that can be inserted between transmissions of frames in order to optimize CPU
allocation to other processes (especially to processes that have a priority level which is lower
than that of the application).
Interval between TX retries <1-1000> Sec [15]:
The interval of time that should elapse between two retries at Source/Destination level. This
period of time starts after the Data Link layer finalizes the transmission of a frame (that is,
after it received an appropriate ACK or exhausted all retries for a frame that was not
acknowledged).
Interval between 'Logical channel BUSY' retries (1-1000) Sec [10]:
The waiting time between retries if the receiving end issued a BUSY signal (because all of its
logical channels were busy).
Delay after last received frame for partial ACK (1-1000) Sec [5]:
If the called unit receives only some of the frames that were supposed to arrive in one burst, it
will wait a certain period of time, defined in this parameter, before it issues a partial ACK at
Source/Destination level.
Interval before starting 'IS SESSION ON' checks <1-1000> Sec [50]:
The period of time that should elapse before the “is session on” check takes place. See next
parameter.
Number of 'IS SESSION ON' checks <(-1)-20>...(-1)=forever [3]:
If a period of silence is detected in the channel at source/destination level, a special
mechanism checks whether the logical channel is still available. This parameter determines the
number of times the channel will be checked for availability. In any case, the first “is session
on” check will not take place before the timeout defined in the previous parameter.
Interval between 'IS SESSION ON' checks <1-1000> Sec [120]:
The interval of time between two “is session on” checks. See previous parameter.
MDLC Mini-session Applications
General
Period of time that a message is waiting in mail-box <5-255> sec. [10]:
The amount of time that a data frame will remain in the receive buffer. If the application does
not retrieve it during that time, the data frame will be deleted.
RTU To RTU
RTU-to-RTU Number of boxes <1-31> [8]:
The number of boxes allocated at any given time for handling data frames in RTU-to-RTU
communication (received, transmitted, waiting for answer, empty).