16.3. Command Format
Explanation of Commands
When performing a command, the received command or replay data is sent back.
When the received command can not be performed such as the "busy" state, the code " I " is sent back. In this case, insert a delay time. Electrical noise may be the cause of this error.
When receiving an undefined command (unknown command), a "?" is sent back. When there is insufficient memory to store the data of the UFC commands, an “M” is sent back.
Optional addresses can be appended to a command. The address form is "@address" and the address is specified at
Example: The command is "Display net data". The address is 23.
Sending a command | Sending a command with address |
M N 
Terminators
Command
@2 
3 M 
N 
Terminators
Command
Address number
Unperformed command reply
I 
Terminators
Unperformed command
Memory overflow (for UFC commands)
M 
Terminators
Memory overflow error
Unknown command reply
@ 2 
3 
? 
Terminators Unknown command
Address number
Carriage return(0Dh) 
Line feed(0Ah)
16.3. Command Format | Page 58 |