D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 6 Serial Interface
6.1 Introduction The Teledyne Isco D Series pump can be remotely controlled by a
computer through a built-in RS-232-C serial interface. Up to
three D Series pump modules can be serially controlled from
each D Series controller. This function is supported in two ways:
Teledyne Isco LabView software or by user written software.
To write software for the D Series pumps, you must be familiar
with the Teledyne Isco DASNET communications protocol and
the serial commands recognized by the pumps.
• Section describes the DASNET protocol
• Section 6.4 describes the proper cabling connections for
serial control
• Section 6.5 details the serial commands
• Section 6.6 details the procedure for placing your
controller(s) in serial control mode.
6.2 Network Control and
Communication
Network communications are always initiated by the network
controller, which is typically a computer. Messages from the
instruments are in response to messages from the network controller.
All information on the network is transmitted as groups
of ASCII characters called frames. The message frames contain
the origin of the message, the destination of the message, and a
checksum to verify the validity of the message.
Figure 6-1 Single serial network connection example (rear view)
6-1