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Appendix
8.1
Table of Shared Memory Addresses
Address Assignment
H3
Total no. of
input/output
points
H4
No. of input
points
H5
No. of output
points
H6
System
setting
H7
Communica-
tion frame
confirmation
H8 to HF
S−LINK I/O
device where
error
occurred (for
128 units)
H10 to
Connected
H17
devices (for
128 devices)
H18
Not used
H19
Connection
address for
booster
H1A to
Not used
H7F
8 − 4
No. of
Set value
words
3
The total number of input and output points, the number of
input points, and the number of output points specified us-
ing the I/O setting switch (MODE) are input.
A numeric value of 0, 16, 32, 64, 96, or 128 points is input.
A numeric value of 0 16 32 64 96 or 128 points is input
1
This has the same function as the system SET button of
address H0, Bit 6 (Set).
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.
1
If there is consecutive and different output to the same ad-
dress, if the following data is written to the address before
the output data previously written to that address is trans-
ferred 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 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.
8
If ERR4 occurs, this indicates the address of the S−LINK
I/O device that is the target of the error. If one of the bits is
"1", ERR4 (broken wire or input/output unit error) has oc-
curred at that address. (See section "8.1.1 Error Address
Quick Reference Table".)
8
This indicates the address of S−LINK I/O device connected
to the S−LINK system.
If one of the bits is "1", an S−LINK I/O device is connected
at that address. (See section "8.1.2 Connection Unit Ad-
dress Quick Reference Table".)
−
−
1
Indicates the booster address connected to the S−LINK
system.
15
(0: not connected, 1: connected)
−
−
FP2 S−LINK Unit
Read Write
YES
YES
YES
YES
YES
−
YES
6
5
4
3
2
1
0
−
NO
YES
YES
NO
NO
−
NO
−
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