97
I/O Table Creation Problems
Section 7-6
SR Area
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit number
SR 251
0
0
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
( C )
Indicates the word
address setting for
0, 1 (BCD)
Remote Terminal on Remote I/O Subsystem
of Master with word multiplier 0.
o
31 (BCD)
add ess se
g o
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 Terminal. 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