How to manage
User Manual forAZ710 Up Converter
version 1.2
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SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS
AZ710 > Unit > Setup > Serial port settings.
There is no flow control on the serial interface. Apart from correctly formatted
messages, the only significant character here is the SYNC-character (value 16
hex). The AZ710 Up Converter sends this character to indicate that it is busy
executing the command and preparing the response. This prevents other devices
from taking control of the bus if the response cannot be given immediately.
4.3.4 RMCP over Ethernet
You can send RMCP commands to the AZ710 Up Converter using the Ethernet
interface. The commands are sent as data in a TCP/IP stream. The used socket
number is 5933.The RMCP protocol is exactly the same as for the serial interface,
with one small exception: the receiving device ignores the RMCP address of the
device that is present in an RMCP command.
To enable the device to communicate over Ethernet, you need to configure the
Ethernet interface. See:
AZ710 >> Unit >> Setup >> Ethernet settings
4.3.5 Protocol
The control unit sends a “request” message to a device identified by its unique
address. The addressed device interprets the message, performs the requested
action and sends a “response” message back.
The receiving device rejects all messages with transmission errors without any
further action. Transmission errors are:
•
No stop bit
•
Parity
error
•
LRC-error
•
Message receive buffer overflow
The addressed device responds to all correct formatted messages – except for
some special system messages – with an acknowledge message. Only in a few
restricted cases does the device not respond to a request from the control unit.
This is, for example, the case when a general device reset is requested.
Correctly received messages which the device cannot handle are refused via a no-
acknowledge “error” message. This message contains the reason why the
message is rejected.
A device never sends messages on its own initiative. It only responds to a request
from the control unit. The total transmit time of a complete message may not
exceed 250 ms. If the message is not completed within this time, it is discarded.
