Murata Electronics North America DNT24 사용자 설명서
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DNT24 Integration Guide – 03/04/15
c.
Configure the number of child slots per hop on the base by setting the NumSlots parame-
ter. The default is 3 slots.
ter. The default is 3 slots.
d.
Set the required hop duration on the base. The HopDuration parameter in Bank 0 con-
trols hop duration. The default is 20 ms.
trols hop duration. The default is 20 ms.
11. Configure the slot lease on the base by setting the SlotLease parameter. The default is 4 hops.
12. Set the heartbeat interval as required in each system radio. The parameter that controls heart-
beats is the HeartBeatIntrvl in Bank 0. The default is 20 seconds/heartbeat.
13. Enable end-to-end message ACKs where required by setting the EndToEndAckEnable parameter
in Bank 0 to 1. Enabling this parameter provides a confirmation that a message has reached its
destination in peer-to-peer or store-and-forward routing. The default is disabled.
destination in peer-to-peer or store-and-forward routing. The default is disabled.
14. Set the message retry limit on the base with the ArqAttemptLimit parameter in Bank 1. The de-
fault value is 6 retries.
15. Set the link drop threshold on the base by setting the LinkDropThreshold in Bank 1. This parame-
ter sets the number of sequential hops without receiving a beacon that will trigger a child to
resynchronize and re-link to its parent. The default is 10 hops.
resynchronize and re-link to its parent. The default is 10 hops.
16. Set the point-to-point reply timeout on the base in the P2PReplyTimeout parameter in Bank 1.
The default is 16 hops. See Section 7.4.2 for parameter details.
17. Configure the registration timeout on the base by setting the RegistryTimeout parameter in
Bank 1. The default timeout is 50 hops. See Section 7.4.2 for a discussion of this parameter.
18. Load an optional “friendly description” in each system radio in the UserTag parameter, Bank 0.
4.5 Configuring a Store-and-Forward System
The following additional parameters must be set to configure a DNT24 store-and-forward system:
1.
Configure the DNT24 radios designated to be routers by setting the DeviceMode parameter
in Bank 0 to 0x02.
in Bank 0 to 0x02.
2.
Enable store-and-forward operation on all system radios by setting the Store&ForwardEn
parameter in Bank 0 to 0x01.
parameter in Bank 0 to 0x01.
3.
In each router, load a unique base-mode network ID into the BaseModeNetID parameter in Bank
0, and into the base if a router is set to 0x00.
0, and into the base if a router is set to 0x00.
4.
To configure a specific system topology, set the parent network ID parameter, ParentNwkID, and
optionally the alternate parent network ID parameter, AltParentNwkID, in all routers and
remotes. Note that a store-and-forward system topology can be formed either automatically or
manually, based on the settings of the ParentNetworkID and optionally the AltParentNwkID
parameters:
optionally the alternate parent network ID parameter, AltParentNwkID, in all routers and
remotes. Note that a store-and-forward system topology can be formed either automatically or
manually, based on the settings of the ParentNetworkID and optionally the AltParentNwkID
parameters:
- Setting the ParentNwkID parameter to 0xFF in all routers and remotes allows each
router and remote to automatically link to a parent, causing the system to form
automatically (child routers picking each other as a parent cannot occur). In this case, the
AltParent-NwkID parameter should be set to 0xFF, which disables it.
router and remote to automatically link to a parent, causing the system to form
automatically (child routers picking each other as a parent cannot occur). In this case, the
AltParent-NwkID parameter should be set to 0xFF, which disables it.