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I/O Table Creation Problems
CVM1/CV
Display
Auxiliary Area
Bit number
15
14
13
A005
15
14
Bit number
A470 to A477
Location of error
Remote I/O Master Unit
or
Remote I/O Slave Unit
Optical I/O Unit
I/O Link Unit
or
Remote Terminal
Summary
98
CPU Unit
Remote I/O errors are not indicated at the CPU Unit.
Master Unit
Display
END RS CHK
(T
(Terminator check)
i
h
12
11
10
9
8
Not used
13
12
11
10
9
8
Bit 15 to 8
Bit 15 to 8
B0 Hex
The digit on the right (0 to
to
7) indicates the mounting
B7 Hex
order of the Master of the
R
Remote I/O Subsystem
t I/O S b
involved.
00 (BCD)
Indicates the address of the
to
to
Optical I/O Unit where the
Optical I/O Unit where the
31 (BCD)
error has occurred.
00 (BCD)
Indicates the address of the
to
I/O Link Unit or Remote
31 (BCD)
Terminal where the error
has occurred.
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 these bits ON (after the
data is read, the bit automatically turns OFF). Bits A00500 to A00507 corre-
spond to Masters #0 to #7.
Remote I/O Error Flag
This flag indicates that an error has occurred in a Remote I/O Slave Unit, an I/O
Link Unit, or a Remote Terminal. It also turns ON where there is more than one
terminator set.
Multiple terminators are detected as follows:
Lit
Lit until a terminator is found.
k)
Flashing
Flashes if multiple terminators are set.
Unlit
Turns OFF if one and only one terminator is
found.
7
6
5
4
3
7
6
5
4
3
Bit 7 to 4
Meaning
Bit 7 to 4
0 to 7 (BCD)
t
8 (BCD)
0 (BCD)
1 (BCD)
---
Section 7-6
Function
2
1
0
Error Check Bit (RM #0)
Error Check Bit (RM #1)
Error Check Bit (RM #2)
Error Check Bit (RM #3)
Error Check Bit (RM #4)
Error Check Bit (RM #5)
Error Check Bit (RM #6)
Error Check Bit (RM #7)
2
1
0
0
0
0
Error Check Bit
Remote I/O Error Flag
Meaning
Indicate error in Remote
I/O Slave Unit with unit
numbers #0 to #7.
Indicates error in the
Remote I/O Master Unit.
Indicates an even word.
Indicates an odd word.
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