Omron C200H-RM201 - Page 108

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Slave Unit Numbers with Multiple Terminators Section 7-7
SR Area
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit number
SR 251
00
Error Check Bit
Remote I/O Error Flag
Bit 15 to 8
Bit 7 to 4
Location of error Bit 15 to 8 Meaning Bit 7 to 4 Meaning
Remote I/O Master
Unit
or
Remote I/O Slave
B0 Hex
to
B7 Hex
The digit on the right
(0 to 7) indicates the
mounting order of the
Master of the Remote
0 to 7
(BCD)
Indicate error in Remote I/O Slave Unit with
unit numbers #0 to #7.
(C2000: #0 and #1 only.)
Remote
I/O
Slave
Unit
Master
of
the
Remote
I/O Subsystem
involved.
8 (BCD) Indicates error in the Remote I/O Master Unit.
Remote Terminal 00 (BCD)
to
31 (BCD)
Indicates the word
address setting for
th R t T i l
0, 1 (BCD) Remote Terminal on Remote I/O Subsystem
of Master with word multiplier 0.
31 (BCD)
g
the Remote Terminal.
2, 3 (BCD) Remote Terminal on Remote I/O Subsystem
of Master with word multiplier 1.
4, 5 (BCD) Remote Terminal on Remote I/O Subsystem
of Master with word multiplier 2.
6, 7 (BCD) Remote Terminal on Remote I/O Subsystem
of Master with word multiplier 3.
Error Check Bit
If there are errors in more than one Slave or multiple terminators have been set,
data for the Units can be accessed in order by turning this bit ON and OFF.
Remote I/O Error Flag
This flag indicates that an error has occurred in a Remote I/O Slave Unit or a
Remote T erminal. It also turns ON where there is more than one terminator set.
Multiple terminators are detected as follows:
• The “END RS CHK” indicator on the Remote I/O Master (RM) Unit flashes.
• Turn SR 25100 ON and OFF to read the terminators in order.
Summary
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