Comtech EF Data CLC-10 - Manual (Page 40)

CLC-10 Comtech LPOD Controller Handheld Terminal M&C Accessory Revision 3
Serial-Based M&C using the CLC-10 MN-CLC10
3–8
The Controller 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.
6B
3.4.4.3 Address Delimiter
This is the ‘forward slash’ character ' / ' (ASCII code 47).
3.4.4.4 Instruction Code
This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have
been chosen to have some significance.
For example: GAC for Global Amplifier Configuration; IPA for IP Address, etc. This aids in the readability of the message, should it be
displayed in its raw ASCII form.
Both upper case and lower case alphabetic characters may be used (A-Z and a-z, ASCII codes 65-90 and 97-122).
3.4.4.5 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:
=
(ASCII code 61 This character 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: In a message from Controller-to-Target, MUT=1 would mean ‘enable the
Mute function’.
?
(ASCII code 63) This character 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: In a message from Controller-to-Target, SWR? would mean ‘returns the value of the
internal software revision installed in the unit’.
2. From Target-to-Controller, the only permitted values are: