Microhard Systems P900 - Routing (Mesh); Standby Trip Level (Mesh); Compression Mode; Max Buffer in Storage

© Microhard Systems Inc. Confidential 96
6.0 Register/Command Reference
Values
S223 (MESH) Routing
0 - Disabled
1 - Enabled
This register is used to enable or disable Mesh Routing function of the modem.
Whenever coordinators are added to a system, routers are typically required in
a network. Any unit in a Mesh network can be used to perform routing tasks.
Although it is a good idea to have more than a single router, too many routers
may create unnecessary traffic in the system. See Section 3 for additional
information.
0 - Disabled - Disabled by default
1 - Enabled - Routing can be enable on any unit, but the more units
performing routing tasks, the more routing traffic generated.
Values (0-255)
S224 (MESH) Standby Trip Level
20
Mesh Standby Coordinator sync level at which it becomes the primary
coordinator. 0 - 255, Default = 20.
This register works with the Sync Timeout (S248) on the Primary coordinator to
monitor the sync level to determine when the Primary Coordinator has failed.
The Sync Timeout sets a counter (set by S248 on the Primary coordinator and
propagated in sync packets) that counts down each time a frame is received
that does not contain sync data from a coordinator. If the unit receives sync
data the counter is reset, if the counter reaches zero - the unit loses sync.
The Standby Trip Level (S224) is designed to be able to transition a Standby
Coordinator to a Primary Coordinator before the network loses sync. This is
accomplished by watching the counter set by S248 and triggering at the level
set by S224.
Each unit in a Mesh
network has a unique MAC
Address. Unicast Data with
a destination address of the
primary Coordinator will
NOT be automatically
routed to the Standby
Coordinator.
Values (1-255)
S232 Max Buffer in Storage
200
Maximum number of buffers from the local com port. 1 to 255, default 200.
Used to limit the amount of storage the modem will allocate to incoming user’s
data. Each buffer is S112 number of bytes. With S112=256 (default) and
S232=200 (default) the modem can store up to 51200 bytes.
Values
S225 Compression Mode
0 - Disabled
1 - Type 1 Enabled
Using compression may improve overall performance of the modem. Default is
enabled.
Compression was
introduced in firmware
v1.10. Older versions of
firmware will not be
compatible with v1.10
unless S225 is disabled
or older units are
upgraded.