28: AS-INTERFACE MASTER COMMUNICATION
« FC4A MICROSMART USER’S MANUAL » 28-25
Slave List Information
Data registers D1764 through D1779 are assigned to slave list information to determine the operating status of the slaves.
The slave list information is grouped into four lists. List of active slaves (LAS) shows the slaves currently in operation.
List of detected slaves (LDS) the slaves detected on the AS-Interface bus. List of peripheral fault slaves (LPF) the faulty
slaves. List of projected slaves (LPS) the slave configuration stored in the AS-Interface master module.
List of Active Slaves (LAS)
Data registers D1764 through D1767 are allocated to read the LAS. You can check the register bits to determine the oper-
ating status of each slave. When a bit is on, it indicates that the corresponding slave is active.
List of Detected Slaves (LDS)
Data registers D1768 through D1771 are allocated to read the LDS. You can check the register bits to determine the detec-
tion status of each slave. When a bit is on, it indicates that the corresponding slave has been detected by the master.
List of Peripheral Fault Slaves (LPF)
Data registers D1772 through D1775 are allocated to read the LPF. You can check the register bits to determine the fault
status of each slave. When a bit is on, it indicates that the corresponding slave is faulty.
List of Projected Slaves (LPS)
Data registers D1776 through D1779 are allocated to read and write the LPS. The LPS settings are stored to the AS-Inter-
face master module when either Auto Configuration or Manual Configuration is executed on WindLDR. The ASI command
Read LPS can be used to read the LPS data to data registers D1776 through D1779. Then, you can check the register bits
to determine the slave projection. When a bit is on, it indicates that the corresponding slave is set as a projected slave. After
changing the LPS settings, execute the ASI command Read LPS, then you can use the updated data for program execution.
LAS
Data Format
Bits 15 to 8 Bits 7 to 0
D1764 Bytes 0 and 1 Slaves 15(A) to 8(A) Slaves 7(A) to 0
D1765 Bytes 2 and 3 Slaves 31(A) to 24(A) Slaves 23(A) to 16(A)
D1766 Bytes 4 and 5 Slaves 15B to 8B Slaves 7B to (0B)
D1767 Bytes 6 and 7 Slaves 31B to 24B Slaves 23B to 16B
LDS
Data Format
Bits 15 to 8 Bits 7 to 0
D1768 Bytes 0 and 1 Slaves 15(A) to 8(A) Slaves 7(A) to 0
D1769 Bytes 2 and 3 Slaves 31(A) to 24(A) Slaves 23(A) to 16(A)
D1770 Bytes 4 and 5 Slaves 15B to 8B Slaves 7B to (0B)
D1771 Bytes 6 and 7 Slaves 31B to 24B Slaves 23B to 16B
LPF
Data Format
Bits 15 to 8 Bits 7 to 0
D1772 Bytes 0 and 1 Slaves 15(A) to 8(A) Slaves 7(A) to 0
D1773 Bytes 2 and 3 Slaves 31(A) to 24(A) Slaves 23(A) to 16(A)
D1774 Bytes 4 and 5 Slaves 15B to 8B Slaves 7B to (0B)
D1775 Bytes 6 and 7 Slaves 31B to 24B Slaves 23B to 16B
LPS
Data Format
Bits 15 to 8 Bits 7 to 0
D1776 Bytes 0 and 1 Slaves 15(A) to 8(A) Slaves 7(A) to 0
D1777 Bytes 2 and 3 Slaves 31(A) to 24(A) Slaves 23(A) to 16(A)
D1778 Bytes 4 and 5 Slaves 15B to 8B Slaves 7B to (0B)
D1779 Bytes 6 and 7 Slaves 31B to 24B Slaves 23B to 16B
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