CIRCUIT DESIGN MU-4-434, Operation Manual

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OG_MU-4-434_v10e Circuit Design, Inc.
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OPERATION GUIDE
Chapter 4 How to Use the MU-4
4.1 Communication Concept
4.1.1 Station types and link parameters
When performing communication using the MU-4, the source station transmits data towards the target station. If
necessary, it is also possible to relay data using relay stations between the source and target stations. In addition,
to avoid collisions with, and to ensure independence from other systems, it is necessary to set the link parameters
to identify the system and each station.
Group ID 01
Same area
UI = 0055
GI = 01
EI = 01
Group ID 02
Group ID 03
User ID 0055
UI = 0055
GI = 01
EI = 02
UI = 0055
GI = 01
EI = 03
Route information:RT
Destination ID:DI
User ID:UI
Group ID:GI
Equipment ID:EI
Channel:CH CH = 08 CH = 08 CH = 08
RT=02,03
Channel 08
Source station
01
Relay station
02
Target station
03
1. The source station, relay station and target station
• Source station
The station that transmits data
• Relay station A station to relay data to the target station. The relay station neither buffers nor resends data but
simply relays it directly to the target station. Setting is possible up to a maximum of 10 relay
stations.
• Target station The station that receives data. The target station outputs the received data to the user controller.
It also sends ACK data and RSSI (received signal level) data to the source station depending on
the command issued from the source station.
2. The link parameter
In order to establish communication between the radio stations, it is necessary first to set the link parameters.
• UI: User ID
An ID given to the MU-4 user for identification of the user.
If all the equipment within the user system is not set to the same User ID, no link will be made.
• GI: Group ID
An ID to identify the group within the user system. Set the same Group ID for all radio stations within the group.
• EI: Equipment ID
An ID given to each unit for identification of each station. The data transmit command transmits data to the
Equipment ID set as the route information or Destination ID
• DI: Destination ID
Specifies the Equipment ID of the target station when no relay station is used in the system.
• RT: Route information
Route information to the target station in the system using relay stations. List the route information in the route
register or transmit a command character string.
• Channel
If all stations in a system are not set to the same channel, no link will be made.