User Manual, Firmware rev. 3.0 or LATER Owner's manual

18 Publication 1404-UM001F-EN-P - November 2009
Chapter 2 Product Description
RS-232 Optional Communication
A catalog number ending in -232 specifies a power monitor with one
RS-232 communication port in addition to the native RS-485
communication port. You select which of the two ports is active, as
the two ports may not be used concurrently. The RS-232 port supports
the same performance features as the RS-485 port, with the following
exceptions:
• RS-232 cable length 15.24 m (50 ft) maximum
• Cable type: three-wire shielded (Belden 9608)
• Point-to-point wiring
• The RS-232 port operates as a responder. Unlike the RS-485 port,
the RS-232 port supports overlapping messages.
Remote I/O Optional Communication
A catalog number ending in -RIO specifies a power monitor with a
remote I/O communication port in addition to the native RS-485
communication port. The remote I/O option permits concurrent use
of both communication ports. The remote I/O port has the following
performance features:
• One-quarter rack slave device
• Three communication rate settings: 57.6, 115.2, and 230.4 Kbps
• Cable lengths up to 3048 m (10,000 ft)
• Node capacity up to 32 nodes
• Update rates for discrete I/O: 5 ms
• Update rates for block transfers: 50 ms minimum
• Two discrete inputs
• Eleven discrete outputs
• Read/Write block transfer data tables for access to all data