Chapter 9—C445 Logic Engine and Expansion I/O
194
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Connecting the ELC-CARS485 module to the C445
The default interface parameters for the RS-485 port on the
C445 that the ELC-CARS485 module connects to are as
follows:
Baud Rate: 115.2K
Parity: Even
Bits/byte: 8
Stop Bits: 1
Mode: RTU
For these default interface parameters, the DIP switches on
the ELC-CARS485 module must be set as follows:
PA3—OFF
PA2—ON
PA1—OFF
PA0—ON
DR2—ON
DR1—ON
DR0—ON
A/R—OFF
To change these default interface parameters on the C445,
use either the C445UM User Interface or the Power Xpert
in
Control software. The DIP switch settings for the various
interface parameter options for the ELC-CARS485 module
can be found in publication MN05002003E.
Note:
Parity None is not supported.
The second set of DIP switches on the ELC-CARS485
module are for its node address. The address set on these
DIP switches for this module must match the address
configured for it in the C445 using the user interface or the
in
Control software. This parameter can be found in either
tool under the Expansion IO category.
DIP switches labeled ID0 through ID7 are for the node ID.
Weighted binary is used where the least significant DIP
switch is ID0. For example, if ID2 and ID0 are ON and all
the others are OFF, the unit, following a power cycle will
be node ID 5.
Connect the ELC-CARS485 module to the RS-485 port on
the bottom of the C445 Base Control Module as follows:
To configure the C445 RS-485 port to communicate with the
Expansion I/O, use one of the two methods.
1.
C445UM User Interface.
Configure the following parameters with the
User Interface:
1.9. Communications / 1. Modbus / 1. Base Control
Module 485 port mode / ELC IO
2.15. Expansion IO / 2. Expansion IO Comm Config /
1. ELC IO Modbus Address / Make it the same address
set on the ELC-CARS485 Adapter DIP switches ID0-ID7.
3.15. Expansion IO / 3. ELC IO Setup Config / Enter the
number of digital inputs, the number of digital outputs
and any analog or temperature cards by part number in
the order they appear to the right of the ELC-CARS485
adapter. The analog and temperature modules are listed
and just need to be selected from a list.
2.
The Power Xpert
in
Control software tool. This tool can
be found at the following website as a free download:
www.eaton.com/c445.
1.
Under the Communications / Modbus category,
then Advanced Settings, change the BCM 485 port
mode to ELC IO.
2.
Expansion IO
3.
To configure the digital and analog IO modules, use
the Logic Engine programming tool and configure
the Expansion IO per the instructions below.
C445/BCM
ELC-CARS485
D0
---------------------------
D–
D1
---------------------------
D+
C
---------------------------
SG