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I/O Table Creation Problems
C200H/C200HS/C200HX/C200HG/C200HE(-Z)
Display
SR Area
15
14
13
Bit number
SR 251
Location of error
Remote I/O Slave Unit
Remote Terminal
Summary
100
CPU Unit
Remote I/O errors are not indicated at the CPU Unit.
Master Unit
Display
END RS
(T
(Terminator check)
i
h
k)
12
11
10
9
8
7
Bit 15 to 8
Bit 15 to 8
Meaning
B0 Hex
The digit on the right
to
indicates the unit number of
B1 Hex
the Remote I/O Master Unit
(#0 or #1).
00 (BCD)
Indicates the word address
to
setting for the Remote
31 (BCD)
Terminal.
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 OFF and ON.
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" indicator on the Remote I/O Master (RM) Unit flashes.
By turning SR 25100 ON and OFF, the terminators can be read in order.
Lit
Lit until a terminator is found.
Flashing
Flashes if multiple terminators are set.
Unlit
Turns OFF if one and only one terminator is
found.
6
5
4
3
2
1
0
0
Bit 7 to 4
Bit 7 to 4
0 to 4 (BCD)
0, 1 (BCD)
Section 7-6
Function
0
Error Check Bit
Remote I/O Error Flag
Meaning
Indicates the unit number
of the Remote I/O Slave
Unit.
Either 0 or 1 indicates error
in Remote Terminal.
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