Comtech EF Data LBC-4000, Инструкция по установке и эксплуатации

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LBC-4000 L-Band Up/Down Converter System
Revision 6
Serial Interface Operation 8–3 MN-LBC-4000
8.2 Remote Commands and Queries Overview
8.2.1 Packet Structure
The structure of a Command, Response, or Error Message is as follows:
•
Start of Packet Character
•
Target (Device) Address
•
Address Delimiter
•
Instruction Code
•
Instruction Code Qualifier
•
Optional Message Argument
•
End of Packet
Command Example (Controller-to-Target): <0412/MUT_A_ON{cr}
Query Example (Controller-to-Target): <0412/MUT_A{cr}
Query Response Example (Target-to-Controller): >0412/MUT_A_ON{CR}{LF}
8.2.1.1 Start of Packet Character
The Start of Packet Character begins each message:
•
Controller-to-Target: ‘<’ (ASCII code 60) designates the start of a user command or query.
•
Target-to-Controller: ‘>’ (ASCII code 62) designates the start of a Target response.
8.2.1.2 Target (Device) Address
Use the “SPA” remote command to assign an address to a Target unit. Up to 9,999 devices can be uniquely addressed.
Typical for EIA-232 or EIA-485 applications, the permissible range of values is from 0001 to 9999. Each block converter module has its
own address:
Module Address
LBC-4000/-ST Base
Block Converter A Base + 1
Block Converter B Base + 2