Maxiflex P3 PAC User Manual
65
-© Omniflex
UMM126XR18.pdf
11. Configuring the P3 CPU
11.1 Overview
If you follow all of the instructions in this chapter you will have configured all the essential
parameters required for most uses of the Maxiflex P3 CPU.
There are three places that configuration must be performed on a P3 CPU:
11.1.1 Communication Port Address Switches
The P3 CPU is equipped with a number of DIP switches inside the front door of the
module that are used to set various network communications parameters.
See paragraphs 11.2 and 11.3 for further information.
11.1.2 User Configuration
This configuration is normally done using the Omniset Configuration Utility. See
paragraph 11.3 onwards for more detailed information.
11.1.3 IEC61131 User Program
It is not necessary to have a User Program in the P3 CPU to use this product for
conventional remote I/O purposes. A User Program is only required if you wish to
implement some additional calculation or control.
The P3 CPU can be programmed in any of the IEC61131-3 programming languages
using the Omniflex ISaGraf Programmer’s Workbench.
Refer to the separate Omniflex ISaGraf Programmer’s Workbench User Guide for
information on programming the P3 CPU in the IEC61131 programming languages.
11.2 Setting the Serial Port Address Switch
If you are using the serial port on the front of the P3, you will need to choose a serial protocol
(such as Modbus ASCII). For most serial protocols, the serial port requires an address to be
set. If you are not using the serial port, then it is not necessary to set this switch.
This address is set on the address switch inside the front door of the module.
Figure 11.1: Serial Port Address Switch
The serial port on the P3 CPU comes equipped with the Modbus Master, Modbus Slave and
Conet/s protocols. There are two ways to select the required protocol:
Using the DIP Switch, or in the configuration file. The DIP switch provides a quick and simple
method of achieving communications using default settings in Modbus Slave and Conet/s.
