Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) User Manual

Page 366

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Chapter 19
Common Procedures

19–7

2. Arrow down to the desired baud rate and select it.

n times

ENT

The MicroLogix 1000 HHP resets itself to the new baud rate and runs
through the power-up sequence.

If you configure your program to be compatible with Series C or later
MicroLogix 1000 discrete controllers or MicroLogix 1000 analog
controllers, option number 7 in the menu functional area is

COMMS

(instead of

BAUD RATE

). This menu option allows you to change any or all of the

following:

the controller’s active communication protocol

the default baud rates for each protocol

the default node addresses for each protocol

The steps below walk you through the five sub-menus of the

COMMS

option.

Press

ESC

at any time to exit the sub-menus.

1. Enter the menu and choose the option

COMMS

. The first screen that

appears is the Main Protocol sub-menu, as shown below.

7

MENU

I

ENT

M A I N

P R O T O C O L

D F 1

D H 4 8 5

Use this sub-menu to specify which protocol the controller should attempt
to establish communication with first. Although the MicroLogix 1000
controller will automatically find which protocol is active (DF1
full-duplex or DH-485) and establish communication accordingly, you
can shorten the connection time by choosing the appropriate main
protocol.

Changing the Micro
Controller’s Communication
Defaults

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