Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) - Manual (Page 97)

Understanding IMC-S/23x Setups 5-17
Publication 999-122 - January 1997
Multidrop is a communications scheme which allows multiple
IMC-S/23x controllers to communicate with a master controller or host
computer over a single RS-422 serial link. Answer
NO to the
Multidrop? question for initial setup and commissioning of the
IMC-S/23x. Also answer NO to the Multidrop? question if this
IMC-S/23x is to be the master on the multidrop link.
If this IMC-S/23x is to be a slave on the multidrop link in your
application, answer
YES to the Multidrop? question to enable
multidrop for serial port A only after you have completed setting it up.
Use the recommended settings of the direct command mode
configuration parameters for GML (shown earlier) with multidrop.
After enabling multidrop, be sure to set the desired controller address
using the front-panel selector switch.
Editing the Operator
Interface
Configuration After completing the direct command mode configuration, the
IMC-S/23x asks
Toggle to YES and press ENTER to configure the operator interface
for your application.
If you are not using DH-485 (see Configuring the IMC-S/23x in the
Installation and Hookup section of this manual), the recommended
setting of the operator interface configuration parameters for use with
most serial devices is shown below:
!
ATTENTION: It is not possible to use multidrop with
RS-232 communications. See the Installation and
Hookup section of this manual to configure serial port
A for RS-422 operation if you are using multidrop.
!
ATTENTION: Always configure the operator
interface for serial port A if you are using DH-485
communications.
Multidrop?
Edit Operator Interface Config? NO
Operator Interface Serial Port? B
Linefeed Insertion? YES
Carriage Return Insertion? YES