•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
Copyright © 2021 White Knight Fluid Handling | A Graco company
Version 1.0.1 | 3 December 2021 | Page 29
187 E. 670 S., Kamas, UT 84036
435.783.6040 888.796.2476
6.4. Command Line Interface
Limited control is available to user via an RS232 interface of the PCA300 controller. Basic functions can be
controlled and monitored through this communication port. This application note will provide setup requirements
and basic examples, as well as lists of available commands, data interpretations, and error lists.
This application note assumes some basic understanding of serial communication and in-depth examples of
configuring/setup are not within the scope of this document. Please consult White Knight Fluid Handling
application engineers for more information.
6.4.1. Setup Requirements:
6.4.1.1.
Serial Communications configuration:
Serial communication is built as an RS232 full-duplex configuration routed externally to a DB9 female connector.
There are many devices capable of meeting serial settings that will suffice to control the pump. Please consult
datasheets for your intended application components to determine interoperability.
6.4.1.2.
Serial settings:
Baud rate: 57600 Baud
Data bits: 8
Flow Control: None
Parity bit: None
Stop bits: 1
Pinout for RS232 connection:
pin
Moniker
Description
1
-
2
TX
Transmit
3
RX
Receive
4
-
5
GND
Ground
6
-
7
-
8
-
9
-