Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module - Manual (Page 26)

2-4 Installing the Module
Before installing the module, set its Operating Mode Switch (SW2 in
Figure 2.1 ) for Single or Multi-Drive operation. All channels (CH1,
CH2, and CH3) will operate in the selected mode.
Important: A new switch setting is recognized only when power is
applied to the module, or the module is reset. If you change
a setting, cycle power or reset the module.
The Configuration Mode Switch (SW1) and Operating Mode Switch
(SW2) settings can be verified by respectively viewing module
Parameters 01 - [Config Mode] and 02 - [DSI Mode] using an
optional, external PowerFlex 4-Class HIM, DriveExplorer software or
DriveExecutive software.
Setting the Operating Mode Switch (Single/Multi-Drive)
SW2 Setting Description
1X (Single mode)
back position Default setting — sets the 1769-SM2 module for Single mode
using a single drive connection (one drive per channel).
Important: In Single mode, only one drive can be connected per
channel. Connections to multiple drives must be removed since
all powered and connected hosts will respond to any message
sent by the module.
5X (Multi-Drive mode)
front position Sets the 1769-SM2 module for Multi-Drive mode using up to five
PowerFlex 4-Class drives per channel.
In Multi-Drive mode, DSI peripherals such as the 22-HIM-A3 /
-C2S Human Interface Module, 22-SCM-232 serial converter, etc.
CANNOT be used. They will not operate with the 1769-SM2
module or drives.
The specific number of drives used in Multi-Drive mode for each
channel and a unique address for each drive must be configured
using 1769-SM2 module parameters. For instructions, see
Setting the I/O Configuration (Multi-Drive Mode Only) on
page 3-14
and Setting Drive Node Addresses (Multi-Drive Mode
Only) on page 3-16 .
NOTE: In Multi-Drive mode, each channel can be independently
configured for Modbus RTU Master operation by setting the
respective channel’s [DSI I/O Cfg] parameter to “5” (RTU Master).
This enables up to 31 RTU slave devices, such as PowerFlex
7-Class drives with 20-COMM-H RS485 HVAC adapters to be
connected to that channel.