10.2.4.2 Target Address; 10.2.4.3 Address Delimiter; 10.2.4.4 Instruction Code; 10.2.4.5 Instruction Code Qualifier - Comtech EF Data SLM-5650A Installation And Operation Manual

10.2.4.2 Target Address

Up to 9,999 devices can be uniquely addressed. In EIA-232 applications, this value is set to 0000, In EIA-485 applications, the permissible
range of values is 0001 to 9999. Program the address into a Target using the front panel (CONFIG:) Remote  SerialConfig 
Interface submenus .
The Controller Unit sends a packet with the address of a Target – the destination of the packet. When the Target responds, the address
used is the same address, to indicate to the Controller the source of the packet. The Controller does not have its own address.

10.2.4.3 Address Delimiter

This is the forward slash character: / (ASCII code 47)

10.2.4.4 Instruction Code

This three-character alphabetic sequence is intended to be a mnemonic of its operational function. This aids in the readability of the
message, should you display it in its raw ASCII form. For example, "UAT" means "Upconverter Attenuation; "IPA" means "IP Address", etc.
Only upper case alphabetic characters may be used (A-Z, ASCII codes 65-90).

10.2.4.5 Instruction Code Qualifier

This single character further qualifies the preceding instruction code. Instruction Code Qualifiers obey specific rules.
10.2.4.5.1

Controller-to-Target Rules

From Controller-to-Target, the permitted qualifiers are "=" or "?" (ASCII codes 61 or 63):
= (ASCII code 61)
This qualifier is the Assignment Operator (AO). It means that the parameter defined by the preceding byte should be set to the value of the
argument(s) that follow it. For example: TFQ=0950.0000 means "set the transmit frequency to 950 MHz."
? (ASCII code 63)
This qualifier is the Query Operator (QO). It means that the Target should return the value of the parameter(s) defined by the preceding
byte. For example: TFQ? means "query the current value of the transmit frequency."
Serial Remote Control 10–4
SLM-5650A Satellite Modem
Revision 10
MN-SLM-5650A