84
Error Codes and Monitoring Section 7-2
C1000H and C2000H Systems
Bit
no.
Word 251
Error Location Bits 8 to 15
The codes (Remote
Nos.) on the right are
assigned to Masters on
CPU or Expansion I/O
Rack from the least
significant word.
B0 to B7
Indicates word
no. of Remote
Terminal
Definition
00 to 31
Bits 4 to 7 Definition
Indicates a failure
in Slaves #0 to #7.
Indicates a failure
in Master.
Master or Slave
Remote Terminal
8
Remote I/O Error flag
OO
Error Check bit
0 to 7
0, 1
Multiplier 0
2, 3
Multiplier 1
4, 5
Multiplier 2
6, 7
Multiplier 3
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
The Error Check bit can be turned ON and OFF to read errors when they
have occurred in more than one Unit.
The Remote I/O Error flag indicates that an error has occurred in one of the
Remote Units.
The number of the word that is actually allocated to a Remote Terminal is
calculated using this formula:
Word no. = (Word no. listed in the above table) +
(Word Multiplier listed in the above table) x 32
C200H Systems
Bit
no.
Error Check bit
Error Location Bits 8 to 15
Indicates B + the
unit number of the
Master.
B0 to B1
Indicates words
no. set on Remote
Terminal.
Definition
00 to 31
Bits 4 to 7 Definition
Indicates the unit
number of the Slave.
Master or Slave
Remote Terminal 0 or 1
Either indicate the
Remote Terminal.
OO
0 to 4
Word 251
Remote I/O Error flag.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Note
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