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Units 3 and 5 (C200H PC)
1100 11110000 0010
Bit 15 Bit 0
Word 250
Error Flags OFF
for Units 2 and 5.
Error Flag OFF
for Unit 0.
PCs operative
for all Units.
Error Flag ON for
Unit 1.
Allocated to Unit 3.
The C200H could be replaced by the C200HS and C200HX/HG/HE(-Z) with-
out any changes in this example.
7-3 Error Tables
C500, C1000H, and C2000H PCs
Error
Condition
Unit #0 PC
CPU error
Unit #0
down (line
broken or
watchdog
timer
error)
Unit #1
cable
problem
(missing
or broken)
Unit #0
cable
problem
(missing
or broken)
Unit #n
cable
problem
(missing
or broken)
Error in
data
reception
from Unit
#n
Unit #n
down (line
broken or
watchdog
timer
error)
Unit #n
PC CPU
error
At startup Link not established ---
Unit #0 During op-
eration
PC RUN
Flag OFF
for Unit #0.
All LEDs
not lit (link
broken).
All Error
Flags OFF
but that for
#0. All
LEDs but
LINK 0
flashing.
Error Flags for Unit #n ON. LED for Unit
#n flashing (link with Unit #n broken).
PC RUN
Flag for
Unit #n
OFF (pre-
vious data
retained).
At startup Link not established ---
Units oth-
er than #0
and #n
During op-
eration
PC RUN
Flag OFF
for Unit #0.
Error Flags for Unit #0
ON. LED for Unit #0
flashing (link broken).
Error Flags
for Unit #n
ON. LED
for Unit #n
flashing
(previous
data re-
tained for
Unit #n).
Error Flags
for “this”
Unit ON.
“THIS
LINK” LED
flashing
(previous
data re-
tained for
Unit #n).
Error Flags
for Unit #n
ON. LED
for Unit #n
flashing
(previous
data re-
tained for
Unit #n).
PC RUN
Flag for
Unit #n
OFF (pre-
vious data
retained).
At startup Link not established ---
Unit #n During op-
eration
PC RUN
Flag OFF
for Unit #0
(previous
data re-
tained for
Unit #0)
Error Flags for Unit #0
ON. LED for Unit #0
flashing (link broken).
Error Flags
for Unit #0
ON. LED
for Unit #0
flashing
(previous
data re-
tained for
Unit #0).
--- All LEDs
not lit.
Frozen
Note
Error Tables Section 7-3