OG_MU-D1-R_v10e Circuit Design, Inc.
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OPERATION GUIDE
Control of the MU-D1-R is performed by issuing commands and processing the subsequent response (including the
data receive at the target station).
The MU-D1-R has 3 modes, however the only mode required for making practical applications is the command
mode.
This chapter explains the items necessary for developing a user program, focusing on the command mode.
The purpose of the MU-D1-R is to provide the basic components for communication in order to enable various types
of equipment to use radio.
For this reason it is necessary to build communication protocols (ARQ, MCA and so on) into the user application in
accordance with the particular application.
*ARQ: Automation Repeat request MCA: Multi-Channel Access
The outline of how the user controls the MU-D1-R is explained using one-way communication as an example.
Includes link parameters
*Issuing @DT commands:
・Enter the EI of the target station in the DI and issue the DT command.
*DR response receive processing
1. The route information and EI in the frame are compared.
2. The UI and GI of the frame are compared at the same time.
3. Received data is only output if there are no frame errors and
the Link IDs match
User
controller
Radio frame structure
User
controller
Send data
Link parameter settings
Receive data
Link parameter settings
Response processing
Response processing
Note:
*Set the same UI and GI for all equipment in the user system group
*UI=User ID GI=Group ID EI=Equipment ID DI=Destination ID
*Sync=Synchronized signal, FCS=Frame check sequence
Target
station
Link Parameter
UI,GI,DI
User data
FCS
Sync.
Source
station
When using the MU-D1-R to transmit data, it is first necessary to perform various initial settings. When an MU-D1-R
setting command is issued, a command response corresponding to the command is always returned from the
MU-D1-R. Process the command response as necessary. In addition, when data is received from the source station,
a data receive is output from the target station, so perform receiving process according to its data size.
In order for the target station to receive the data transmitted from the source station, it is necessary to set the link
parameters. When the data transmission command is issued, the link parameters are placed in the actual wireless
data frame and are processed appropriately by each station. If there is no data error, it is output to the user controller
by the target station as the data receive.
6.1 Outline of User Processes
Chapter 6 How to Develop a Program
