RS-485 Remote Control Protocol
Page 6-6
Reference Guide: SM6610, SM6615, SM6620 and SM6625 Satellite Modulators
ST.RE.E10152.2
6.2
SM66XX Remote Control
6.2.1 Outline
The SM66XX message protocol works on a configuration concept. This is
outlined in the diagram below. Instead of downloading individual
parameter values an entire configuration is handled.
Stored
Configuration
1 - 8
Current
Configuration
Download configuration to
Stored Configuation n
Message type 0x81
Retrieve Current
Configuration
Message type 0x74
Download to Current
Configuration and Activate
Message type 0x70
Retrieve Configuration
Message type 0x73
Save Current Configuration
Message type 0x80
Activate Stored
Configuration
Message type 0x71
Figure 6.1: SM66XX Remote Control
Configurations can be stored in any of the 8 slots provided or activated
immediately by downloading to the current configuration.
6.2.2 Functionality
Constraints
Certain functionality of the Modulator is dependent upon the specific
Modulator model, the hardware options fitted and the software options
installed in it. The validity of some parameter values in configuration
messages to the Modulator is dependent upon the functionality available.
Parameter values are validated by the Modulator and accepted or rejected
as appropriate. For example, 8PSK modulation and its associated FEC rate
8/9 are only available if the Higher Order Modulation (HOM) software
option is installed.
Содержание SM6610
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