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8–2
Using the RS1 Module with a Programmable Controller
Setting the Drive to Enable
Network Control
Setting the Baud Rate and
Checksum Mode
Connecting the Drive to the
Programmable Controller
Controlling the Drive
The 160 drive must be configured to accept logic and speed
commands from the network. This can be done by configuring two of
the 160 parameters:
1. Set P46 - [Input Mode] to a value of "2." This will configure the
drive to accept the logic commands from the network.
2. Set P59 - [Frequency Select] to "1." This will configure the drive
to accept speed commands from the network.
Changing the above parameters can be done with the 160 Keypad
Module or configuration software such as the DriveExplorer.
Important: For a new Input Mode to take affect, drive power must be
cycled.
The baud rate and checksum mode on the RS1 Module should be
configured to the desired setting for the network (and other devices).
After configuration, install the RS1 Module into the 160 Drive as
explained in Chapter 3. Note that the MicroLogix uses CRC as the
checksum mode.
The RS1 Module is connected to the programmable controller
through the 9-pin D-shell connector. Since each programmable
controller may have different wiring requirements, Figure 3.5 should
be referenced as a guide.
Important: The communication port of the programmable controller
may also be used to program the controller, thus the user
may have to disconnect the cable going to the RS1 Module
before programming the controller.
Controlling the 160 Drive from a programmable controller is
accomplished using Message Commands to communicate through the
RS1 Module to the drive. To send a Start or Stop command to the
drive, the Message Command (MSG) is set up to write to N41:0. To
read the drive status, the Message Command is set up to read from
N41:0. Refer to Chapter 6 for the logic command and status format.
Drive speed can be controlled or read in the same manner by
accessing N41:1.
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