C300R User Manual
Page 19
COMMUNICATION PORTS
RS232/USB
The RS232 and USB communication ports cannot be used
simultaneously.
•
Connect the communication cable to the serial or USB port on
the computer.
•
Connect the other end of the communication cable to the
RS232 or USB communication port on the UPS.
Both RS232 and USB connections allow for 2 way communication between the device connected and the UPS. This
can be used for both issuing configuration commands, communicating with the UPS and issuing shutdown commands.
When connected via USB to a PC the UPS will present itself as a HID compliant ACPI device allowing for zero
configuration shutdown initiated by the UPS in the event of a power failure.
EPO CONNECTION
The EPO (Emergency Power Off) connection allows the UPS to be powered off by changing the state of a normally
closed circuit.
•
Normally closed - Normally EPO connector is closed with a
wire on the rear panel. Once the connector is open, the UPS
will stop output until the EPO status is disabled.
INTERFACE CARDS (OPTIONAL)
The Network Management Card allows the UPS to communicate with monitoring devices by utilising network
connectivity. The C300R series has one available expansion bay for the following connectivity cards:
•
NMC/SNMP Card – this interface card provides SNMP and HTTP capabilities as well as monitoring through a
Web browser interface using RJ45 10/100Mbps over TCP/IP.
•
AS400 card - for RS485 communication protocol. Please contact your CertaUPS partner for details.
