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6.1 Configuration of the Shared Memory
6.1.1 Shared Memory
The S-LINK is equipped with an internal shared memory that enables data to be read from and written to
the control unit.
Function of the shared memory
Information such as the detection of unit (S-LINK device) addresses where errors occur, when they
occur, and the number of S-LINK devices connected to the S-LINK system is stored in the memory. Data
can be read from and written to the control unit using high-level instructions.
Reading data from the shared memory using FPWIN-GR
Reading data from the shared memory using the program
Reading from and writing to the FPΣ control unit can be carried out using [F150: Data read from
intelligent unit (READ)] and [F151: Data write into intelligent unit (WRT)]
Configuration of shared memory in S-LINK
Address
H0
H1
H2
H3
H4
H5
H6
H7
H8 to HF
H10 to H17
H18
H19
H1A to H7F
6-2
Control flag/error flag
No. of units where error occurred
No. of units connected
Total No. of inputs/outputs
No. of input points
No. of output points
System setting
Confirmation of communication frame
Units where error occurred (for 128 units)
Connected units (for 128 units)
Error address for booster SL-BS1A
Connection address for booster SL-BS1A
Not used
Allocation
A: Available N/A: Not available
Read
A
A
A
A
A
A
A
A
A
A
A
A
−
Write
A
N/A
N/A
N/A
N/A
N/A
A
A
N/A
N/A
N/A
N/A
−
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