100
I/O Table Creation Problems
Section 7-6
C200H/C200HS/C200HX/C200HG/C200HE(-Z)
CPU Unit
Remote I/O errors are not indicated at the CPU Unit.
Master Unit
Display
Function
END RS
(T
i
h
k)
Lit
Lit until a terminator is found.
(Terminator check)
Flashing
Flashes if multiple terminators are set.
Unlit
Turns OFF if one and only one terminator is
found.
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 Slave Unit
B0 Hex
to
B1 Hex
The digit on the right
indicates the unit number of
the Remote I/O Master Unit
(#0 or #1).
0 to 4 (BCD)
Indicates the unit number
of the Remote I/O Slave
Unit.
Remote Terminal
00 (BCD)
to
31 (BCD)
Indicates the word address
setting for the Remote
Terminal.
0, 1 (BCD)
Either 0 or 1 indicates error
in Remote 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.
Display
Summary
