29
Design and Operating Procedure Examples Section 1-6
(5) Open the Detailed Settings Dialog Box and enable the Registered
Slave Unit Participation Standby Mode.
(6) Click the Download Button to download the Master Unit device param-
eters.
9. Cycle the power to the PLC.
10. Remote I/O communications will start when all registered Slave Units have
started participating.
MS and NS Indicators • Normal Operation
• Error Operation
LED Status Contents
MS Lit green Master Unit normal Power is being supplied and the Master Unit hardware and settings are normal.
NS Lit green Remote I/O com-
munications normal
Power is being supplied, remote I/O communications have started, there are no
communications errors at any Slave Unit or Repeater Unit, there are no Regis-
tration Table errors, and there are no node address duplication errors for Slave
Units or Repeater Units.
LED Status Contents
MS Flashing
red
Non-fatal error Communications mode number or unit number setting error
Lit red Fatal error Hardware error
NS Flashing
green
I/O communica-
tions stopped
Remote I/O communications have not started or have stopped (for a reason
other than a communications error).
Flashing
red
Communications
error
A communications error has occurred for one or more Slave Units or Repeater
Units.
A verification error (non-existent or unregistered Slave Unit) has occurred for
one or more Slave Units.
Communications have stopped due to a communications error.
An illegal configuration error (number of Repeater Units) has occurred.
An address duplication error has occurred at one or more Slave Units or
Repeater Units.
Lit red Address duplica-
tion error
An error has occurred in the communications circuit.
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