Omron OMNUC FND Series User Manual page 209

Application
4-4-3 CompoBus/S-type Position Driver Protective and
Diagnostic Functions
With the CompoBus/S Master Unit (C200HW-SRM21 is used here as an example) and
the CompoBus/S-type Position Driver (FND-X -SRT), the communications status can
be checked using the LED indicators.
j FND-X -SRT
Diagnosis Using LED Indicator Status
Indicator status
PWR COMM
Not lit Not lit Not lit
Lit Not lit Not lit
Lit Not lit Lit
Lit Not lit ---
j CompoBus/S Master Unit (Example: C200HW-SRM21)
Diagnosis Using LED Indicator Status
Indicator Status
RUN (green) (g ) Lit
Not lit
SD (yellow) (y )
Lit
Not lit
RD (yellow) (y )
Lit
Not lit
ERC (red)
Lit
Not lit
IN/OUT (red) ( )
Lit
Not lit
8 4 2 1 Lit/Not lit
(red)
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Probable cause of error
ERR
The Position Driver's power is not
turned on.
The Slave's node address is set in
the 8 to 15 range when the maxi-
mum number of Slaves connectible
to the Master is 16.
A communications error occurred
during communications.
The Master is a CQM1, and the
number of occupied points per
node is set to 4.
The Master's power is not turned
on.
The Position Driver is operating normally.
Indicates one of the following conditions:
The power is OFF, there is an I/O setting error, the CPU Unit is in standby
status, or there is a unit number setting error.
Data is being transmitted.
Data is not being transmitted.
Data is being received.
Data is not being received.
A Slave has been withdrawn from communications.
(Communications error)
The Slaves are communicating normally.
An error has occurred with an Output Slave.
An error has occurred with an Input Slave or all Slaves are operating nor-
mally.
These indicators represent the four-digit binary slave number of the Slave
in which the error occurred.
Countermeasure
Turn on the power for the Position
Driver.
Set the node address from 0 to 7,
or set the maximum number of con-
nectible Slaves to 32.
Establish the cause of the error by
checking the LED indicator on the
Master and take appropriate coun-
termeasures.
Change the setting to 8-point mode.
Turn on the power for the Master.
Meaning
Chapter 4
4-17