IDEC MicroSmart - Manual (Page 467)

28: AS-I NTERFACE M ASTER C OMMUNICATION
« FC4A M ICRO S MART U SER ’ S M ANUAL » 28-27
Parameter Image (PI)
Data registers D1908 through D1923 are allocated to read the PI of each slave. The PI is made up of four parameters: the
P3, P2, P1, and P0. The PI is the current slave parameter data collected by the AS-Interface master module at power-up
and stored in the AS-Interface master module. To change the PI settings, use
WindLDR (Slave Status dialog box) or execute
the ASI command Change Slave PI.
The ASI command Read PI can be used to read PI data to data registers D1908 through D1923. After changing the PI set-
tings, execute the ASI command Read PI, then you can use the updated PI data for program execution.
Permanent Parameter (PP)
Data registers D1924 through D1939 are allocated to read and write the PP of each slave. Like the PI, the PP is made up of
four parameters: the P3, P2, P1, and P0. When auto configuration is executed, the PI is copied to the PP and stored in the
EEPROM of the AS-Interface master module. When you execute manual configuration, you can set the PP using the Con-
figure Slave dialog box on
WindLDR .
The ASI command Read PP can be used to read PP data to data registers D1924 through D1939. After changing the PP set-
tings, execute the ASI command Read PP, then you can use the updated PP data for program execution.
Changing ID1 Code of Slave 0
Data register D1940 is allocated to read and write the ID1 code of slave 0. To change the slave 0 ID1 settings, store a
required value in D1940 and execute the ASI command Write Slave 0 ID1. The ASI command Read Slave 0 ID1 can be
used to read slave 0 ID1 data to data register D1940. After changing the slave 0 ID1 settings, execute the ASI command
Read Slave 0 ID1, then you can use the updated slave 0 ID1 data for program execution.
PI
Data Format
Bits 15 to 12
P3/P2/P1/P0
Bits 11 to 8
P3/P2/P1/P0
Bits 7 to 4
P3/P2/P1/P0
Bits 3 to 0
P3/P2/P1/P0
D1908 Bytes 0 and 1 Slave 3(A) Slave 2(A) Slave 1(A) Slave 0
D1909 Bytes 2 and 3 Slave 7(A) Slave 6(A) Slave 5(A) Slave 4(A)
D1910 Bytes 4 and 5 Slave 11(A) Slave 10(A) Slave 9(A) Slave 8(A)
D(1908+N/4) | Slave (N+3)(A) Slave (N+2)(A) Slave (N+1)(A) Slave N(A)
D1915 Bytes 14 and 15 Slave 31(A) Slave 30(A) Slave 29(A) Slave 28(A)
D1916 Bytes 16 and 17 Slave 3B Slave 2B Slave 1B (unused)
D1917 Bytes 18 and 19 Slave 7B Slave 6B Slave 5B Slave 4B
D(1916+N/4) | Slave (N+3)B Slave (N+2)B Slave (N+1)B Slave NB
D1923 Bytes 30 and 31 Slave 31B Slave 30B Slave 29B Slave 28B
PP
Data Format
Bits 15 to 12
P3/P2/P1/P0
Bits 11 to 8
P3/P2/P1/P0
Bits 7 to 4
P3/P2/P1/P0
Bits 3 to 0
P3/P2/P1/P0
D1924 Bytes 0 and 1 Slave 3(A) Slave 2(A) Slave 1(A) Slave 0
D1925 Bytes 2 and 3 Slave 7(A) Slave 6(A) Slave 5(A) Slave 4(A)
D1926 Bytes 4 and 5 Slave 11(A) Slave 10(A) Slave 9(A) Slave 8(A)
D(1924+N/4) | Slave (N+3)(A) Slave (N+2)(A) Slave (N+1)(A) Slave N(A)
D1931 Bytes 14 and 15 Slave 31(A) Slave 30(A) Slave 29(A) Slave 28(A)
D1932 Bytes 16 and 17 Slave 3B Slave 2B Slave 1B (unused)
D1933 Bytes 18 and 19 Slave 7B Slave 6B Slave 5B Slave 4B
D(1932+N/4) | Slave (N+3)B Slave (N+2)B Slave (N+1)B Slave NB
D1939 Bytes 30 and 31 Slave 31B Slave 30B Slave 29B Slave 28B
Slave 0 ID1 Code
Data Format
Bits 15 to 12 Bits 11 to 8 Bits 7 to 4 Bits 3 to 0
D1940 Bytes 0 and 1 — — — ID1 code