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Address
Allocation
H6
System setting
Confirmation of
H7
communication
frame
Units where error
H8 to HF
occurred
(for 128 units)
H10 to
Connected units
H17
(for 128 units)
Error address for
H18
booster SL-BS1A
Connection
H19
address for
booster SL-BS1A
H1A to
Not used
H7F
6-4
No. of
words
This has the same function as the SET switch of
address H0, bit 6 (Set).
1
If "1" is written for this bit, the S-LINK connection
status at that point is read. This bit automatically
returns to "0" after the status has been read.
If there is consecutive and different output to the
same address, if the following data is written to the
address before the output data previously written
to that address is transferred to the S-LINK output
unit, the earlier data is ignored.
The confirmation made after the communication
frame has been completed is used to check
whether the output data has been transferred to
1
the S-LINK output unit.
If any numeric value other than "0" is written after
the output data has been written, the value
automatically becomes "0" after the output data
has been transferred to the S-LINK output unit.
Checking to make sure that the value has been
changed to "0" in the program and then writing the
next output data prevents errors in the
transmission of output data.
If ERR4 occurs, this indicates the address of the S-
LINK I/O device that is the target of the error. If one
8
of the bits is "1", ERR4 (broken wire or input/output
unit error) has occurred at that address. (Refer to
Connection Unit Address Quick Reference Table.)
This indicates the address of S-LINK I/O device
connected to the S-LINK system.
8
If one of the bits is "1", an S-LINK I/O device is
connected at that address. (Refer to Connection
Unit Address Quick Reference Table.)
Indicates the booster address where the error
occurred.
1
Indicates the booster address connected to the S-
LINK system.
1
-
-
Set value
Read
Write
A
A
A
A
A
N/A
A
N/A
A
N/A
A
N/A
-
-
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