PICO
Toµch
Series Controllers
60
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Appendix A, Remotely Operating the Controller
You can operate the controller through a personal computer (PC) using the supplied USB communication cable or
by connecting to the RS232 connection through the 25-pin D-sub (port I/O 2). Communicating in this manner allows
you to modify dispensing parameters remotely and also to load custom wave profiles on the controller.
Connection Using a PC
Connect the USB cable to the USB port on the
back of the controller and to a PC.
Connection Using RS232
The 25-pin D-sub (port I/O 2) is configured for
use with a null modem cable. Alternatively,
use the I/O 2 port RS232 pins (pins 2 and
3) to make your connection. Refer to “I/O 2
25-Position D-Sub” on page 55 for the
I/0 2 port pin descriptions.
Communication Specifications
The controller acts as a terminal to the remote host PC. The controller communicates using the following settings:
• Synchronous mode: half duplex
• Baud rate: 115200
• Start bit: 1
• Data length: 8 bit (ASCII)
• Parity bit: None
• Stop bit: 1
Communication Sequence
The host machine initiates all communication sequences. The controller evaluates the last four characters in the
command packet as the command.
Typical Command Packet:
xxxCCCC
(where
xxx
is the setting and
CCCC
is the command)
The length of the setting varies depending on the command.
Serial Commands
Commands are evaluated after a return (Enter key or 0x0D hex). After a return is received, the controller evaluates
the command, transmits any data related to the command, and closes the packet with <3.
The following tables provide the commands for the controller. Each entry includes a brief description of the
command, shows the command format, and provides a description of the data that is attached and retrieved by the
command.
NOTES:
• The <3 acknowledge command is removed from the examples since all commands are successfully evaluated.
• The return constant (Enter key:
↵
) is depicted as [Enter] in all examples.
USB port
I/O 2 port
