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Self-Diagnosis
C200H Remote I/O Systems
Item
Program-
C200H Master LEDs
ming
ming
XMT/
Console
RCV
Display
Prior to
Master
not lit not lit not lit not lit
system
not
operation
detected
CPU
not lit not lit lit
Waiting
or
Remote
I/O errors
not lit lit
not lit not lit flash
Too many
not lit lit
I/O points
flash
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C200H Slave LEDs
Error
END
LINE
XMT/
Error
RS
ERR
RCV
1
---
---
not lit
---
---
lit
not lit
---
lit
not lit
---
---
lit
---
---
not lit flash
---
not lit
---
---
not lit not lit not lit
---
not lit not lit lit
flash
---
Cause
Error
RUN
2
---
---
CPU Unit doesn't
detect the Master.
Master not mount
properly or CPU
Unit error.
---
---
Slave power OFF
or I/O bus line
broken. Termina-
tor not set.
lit
not lit Slave I/O bus
error.
---
not lit Transmission
error in I/O bus.
---
not lit Transmission line
shorted
---
not lit System
configuration
incorrect.
---
not lit Two or more
terminators have
been designated.
Refer to 7-7
Slave Unit
Numbers with
Multiple
Terminators .
---
not lit Same word
multiplier used for
more than one
Master.
---
not lit Same unit
number assigned
more than once.
Section 7-1
Correction
Check mounting of Master;
turn power back ON. If error
cannot be cleared replace
Master.
Turn on power to the Slaves
and connected Units. Check
transmission cables. Set the
Unit farthest removed from
Master as the terminator.
Replace faulty unit.
Check transmission cables.
Check transmission cables.
Check unit numbers of I/O
Units. Confirm that the
same word number or unit
number is not allocated
twice. Check to see if the
maximum number of words
is not exceeded.
Make sure only 1 Unit has
been set as the terminator.
Check word multipliers and
correct any that are
redundant
Check AR 02 through AR
06 for the redundant unit
numbers and correct them.
81
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