User`s guide

Release E UMC800 Control Builder User’s Guide 27
1/01
Establishing Communications
Introduction
General
You must set up the Control Builder by choosing a serial communications link and a computer port and by
matching your controller communications settings.
The Set Controller Comm A Port and B Port option allows you to enable the RS485 Modbus™
communications port if the CPU contains the optional communications board.
Remote Loopback tests the connection between the PC and Controller file.
Remote controller access via dial-up modem is available via the communication setup. An external modem
is required at the controller and is connected to the standard RS 232 configuration port. Remote access
functions include on-line monitoring, configuration upload and download.
What’s in this section?
The following topics are covered in this section.
Topic See Page
Introduction 27
Set Up Communications Link 28
Modbus Communications
Set Up Comm A Port
Set Up Comm B Port
31
31
31
Remote Loopback 32
Remote Controller Access via Dial-up Modem 33