Edwards nEXT nEXT85 - Configuration; Configure the Pump Using Serial Commands; Message Structure

5. Conguraon
Before you operate the pump, congure the motor controller sengs that are applicable
for the applicaon.
If the system is designed to operate with parallel control and monitoring, you cannot
change the motor controller sengs when the pump is installed on the system. The
pump is supplied with the sengs at factory default values, as shown in Table: Summary
of commands that can be sent to the pump on page 48. If you want to change the motor
controller sengs, change the sengs before you install the pump on the system.
To congure the pump, use one of the methods that follow:
▪
Use the customer serial comms over the serial interface to congure the pump.
Refer to Congure the pump using serial commands on page 58 for the necessary
commands to congure the motor controller.
▪
Use manufacturer's TIC Turbo and Instrument Controller, TIC Turbo Controller or
TAG Controller.
Refer to Congure the pump using a TIC on page 65 for more informaon.
▪ Use manufacturer's nST PC soware to congure the pump through the serial
interface or through the USB service port.
Note:
Use the buon on the motor controller to adjust the standby speed. Refer to
Standby speed seng on page 61.
If the nEXT pump is operated with parallel control and monitoring and the controller
sengs will not be congured again, refer to Before starng the pump on page 67.
5.1 Congure the pump using serial commands
Refer to Table: Summary of commands that can be sent to the pump on page 48 for the
summary of the serial commands, parameter ranges and factory defaults for each
seng. Refer to the secons that follows for more informaon about sengs.
5.1.1 Message structure
The message structure and command set are same for RS485 and RS232 opons. To
send a message to the pump, the characters must be sent in a specic order. If the
message is in incorrect structure it will be ignored and no reply will be sent.
The correct structure is as follows:
▪
a valid start character
▪
a '!' character for a store operaon or
▪
a '?' character for a query operaon, followed by
▪
a command: an upper case alphabecal character, followed by
▪
an object number: has three decimal digits, followed by
▪
a data eld (for some commands only,): has a sequence of characters separated
from the object number by a space, followed by
▪
a terminang carriage return.
Page 58
B8G000880_D - Conguraon