31
6.6 RS-232 Protocol
When the unit is set to RS-232 mode in the System menu and connected to a PC
via a USB cable, the following COM port settings should be used for direct control.
SERIAL PORT SETTINGS
Baud Rate
115200
Data Bits
8
Parity Bits
None
Stop Bits
1
Flow Control
None
6.7 RS-232 Commands
Before using the commands, please read the following:
i
Syntax
All commands MUST start with the “$” character or the command will not be
recognized by the unit. Commands must end with a carriage return (0x0D).
Use of a line feed (0x0A) is optional. Commands are not case-sensitive.
i
Responses
The unit will respond to most commands with a repeat of the original
command followed by the specified parameters or requested information
except where otherwise noted. If an invalid command is entered, the unit will
respond with “$err”. All unit responses end with a carriage return (0x0D) + line
feed (0x0A).
i
Cautions
Only one command may be processed at a time. Additional commands should
not be sent until the response from the previous command has been received.
