Icom IC-7610 Reference Manual page 7

I/Q SIGNAL
■ Control commands
D Command format (Continued)
Reading command format:
Send a request command from the PC to request to return an IC-7610 setting value.
A reading command is composed of only a command number.
The IC-7610 will return the requested setting value as an acknowledgement when receiving the command.
If the request command is invalid, "NG (FA)" will be returned as the acknowledgement.
• Command (PC to IC-7610)
q w
IC-7610
Preamble
address
F E F E 9
1 byte
• Acknowledgement of a valid command (IC-7610 to PC)
q e
PC
Preamble
address
F E F E E
1 byte
• Acknowledgement of an invalid command (IC-7610 to PC)
q e
PC
Preamble
address
F E F E E
1 byte
PC to IC-7610
q w e r
FE FE 98 E0 Cn
FE FE E0 98 Cn
q e w r
IC-7610 to PC
NOTE: When the data length is not in increments of 4 bytes
Every command must be in increments of 4 bytes.
If the command is not in increments of 4 bytes, you need to add an extra "FF" at the end of the packet, to make
the command length a multiples of 4. In the same manner, the length of the acknowledgement data from the IC-
7610 is a multiples of 4.
e r t
PC
Command
address command
8 E 0 × × ×
(Variable)
w r t
IC-7610
Command
address command
0 9 8 × × ×
(Variable)
w r t
IC-7610
Command
address command
0 9 8 × × ×
(Variable)
t y i
Sc Data area FD
Sc Data area FD
t y i
i o
Sub
Postamble Padding
× F D F F
y
Sub
Data area
×
y
Sub
Data area
×
o q
FF FE FE
FE FE
FF
o q
7
i
Post
amble
............ F
(Variable)
i
Post
amble
............ F
(Variable)
OK message to PC
e w u i
E0 98 FB FD
E0 98 FA FD
e w u i
NG message to PC
o
Padding
D F F
o
Padding
D F F
o o
FF FF
FF FF
o o