Table of Contents
Advertisement
5.2.2.4 Address Delimiter
This is the "forward slash" character '/' (ASCII code 47).
5.2.2.5 Instruction Code
This three-character alphabetic sequence identifies the subject of the message. Wherever possible, the instruction codes have been
chosen to have some significance. This aids in the readability of the message if seen in its raw ASCII form. Upper and lower case
alphabetic characters (i.e., A-Z [ASCII codes 65-90], and a-z [ASCII codes 97-122]) may be used.
5.2.3
Instruction Code Qualifier
This single character further qualifies the preceding instruction code.
Code Qualifiers obey the following rules:
1. From Controller-to-Target, the only permitted values are:
Symbol
=
(ASCII code 61)
?
(ASCII code 63)
2. From Target-to-Controller, the only permitted values are:
Symbol
=
(ASCII code 61)
Serial Remote Control
'=' is used as the assignment operator, and is used to indicate that the parameter defined by the preceding byte should be set to the
value of the argument(s) that follow it. For example: MUT=1 would mean 'enable the Mute function.'
'?' is used as the query operator, and is used to indicate that the Target should return the current value of the parameter defined by
the preceding byte. For example: MUT? Would mean 'return the current state of the Mute function.'
The = code is used in two ways:
First, if the Controller has sent a query code to a Target (for example: MUT? would mean 'return the current state of the Mute
function'), the Target would then respond with MUT=x, where 'x' represents the state in question (1 being 'enabled', 2 being 'disabled).
Second, if the Controller sends an instruction to set a parameter to a particular value, then, providing the value sent in the argument is
valid, the Target will acknowledge the message by replying with MUT= (with no message arguments).
Definition
Definition
5–5
PCB-4000A 1+1 Phase Combiner
Revision 2
MN-PCB-4000A
Advertisement
Table of Contents
