Wiring for communications
Chilled Water System Optimizer v2
CARRIER CORPORATION ©2019
Installation and Start-up Guide
13
All rights reserved
The controller has multiple ports. See table below for port descriptions.
Port
Protocol
Port type(s)
Baud rate(s)
Use for
Ethernet
Port E1
BACnet/IP
Modbus/IP
NOTE
Both
protocols can
run
simultaneously
Ethernet
10 Mbps
100 Mbps
LAN connection
S2*
Modbus
EIA-485
9600, 19.2k, or 38.4k bps Third-party communication
Local
Access
Enhanced
Access
Rnet
115.2 kbps
Configuration
System start-up and
troubleshooting
* The
Config Mode
DIP switch
Console
must be
Off
(down position) to use Port S2. Port S2 supports only one
protocol and one wire type at a time.
CAUTION
The Chilled Water System Optimizer does not support BACnet MS/TP or BACnet ARCNET networks.
Ethernet wiring specifications
For...
Use...
Maximum Length
Ethernet
CAT5e or higher Ethernet cable
328 feet (100 meters)
*
For details see the
Open Controller Network Wiring Guide
.
WARNING
Do not apply line voltage (mains voltage) to the controller's ports and terminals.
Wiring for communications