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Harsco Industrial Patterson-Kelley ProtoNode Startup Guide
Page 26 of 38
ProtoCessor
1991 Tarob Court Milpitas, California 95035 USA
Web
: www.protocessor.com
Tel
: (408) 964 4444
Fax
: (408) 964 4425
Toll Free
: (800) 317 8319
Appendix A.3.
LED Diagnostics for Modbus RTU Communications between the ProtoNode and the ENVI
and the Love Controller
Please see the diagram below for LED Locations
A.3.1 ProtoNode RER and LER LEDs
Light Description For ProtoNode RER and LER
RTC
Unused
RUN
The RUN LED will start flashing 20 seconds after power indicating normal operation.
ERR
The SYS ERR LED will go on solid 15 seconds after power up. It will turn off after 5 seconds. A steady red
light will indicate there is a system error on the ProtoNode LER. If this occurs, immediately report the
related “system error” shown in the error screen of the RUI interface to FieldServer Technologies for
evaluation.
RX
The RX LED will flash when a message is received on the ProtoNode port.
TX
The TX LED will flash when a message is sent on the ProtoNode port.
PWR
This is the power light and should show steady green at all times when the ProtoNode is powered.