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DATA_BLOCK DB 1
FB 1
BEGIN
END_DATA_BLOCK
// FB 3, embedded as multi-instance in FB 2
FUNCTION_BLOCK FB 3
VAR
V1 : INT;
END_VAR
BEGIN
L W#16#CAFE
T #V1
END_FUNCTION_BLOCK
// FB 2, embedded as multi-instance in FB 1
FUNCTION_BLOCK FB 2
VAR
TEST_STAT1 : DWORD;
TEST_FB3 : FB 3;
END_VAR
VAR_INPUT
TEST_IN1 : DINT;
END_VAR
VAR_OUTPUT
TEST_OUT1 : WORD;
END_VAR
BEGIN
__ASSERT== __AR 2, P#DBX 2.0 // Check multi-instance base
// Check DB/DI registers
L DBNO
__ASSERT== __ACCU 1, 1
L DINO
__ASSERT== __ACCU 1, 1
// Get input, add 1, store in static.
L #TEST_IN1
L 1
+D
T #TEST_STAT1
CALL #TEST_FB3
// Get static, add 1, store in output.
L #TEST_STAT1
L 1
+D
T #TEST_OUT1
END_FUNCTION_BLOCK
// FB 1, called with instance-DB. Embeds multi-instances.
FUNCTION_BLOCK FB 1
VAR
GUARD0 : WORD; // Guard field
MULTI_FB2 : FB 2; // Embedded FB 2 multi-instance
GUARD1 : WORD; // Guard field
MULTI_SFB0 : SFB 0; // Embedded SFB 0 multi-instance
GUARD2 : WORD; // Guard field
END_VAR
VAR_TEMP
TEMP1 : WORD;
COUNT : INT;
END_VAR
BEGIN
__ASSERT== __AR 2, P#DBX 0.0 // Check multi-instance base
// Check DB/DI registers
L DBNO
__ASSERT== __ACCU 1, 0
L DINO
__ASSERT== __ACCU 1, 1
// Write the guard fields to detect errors in the
// multi instance base offset (AR2).
L W#16#4220 // Magic value
T #GUARD0
L W#16#4221 // Magic value
T #GUARD1
L W#16#4222 // Magic value
T #GUARD2
// Call the multi-instance FB 2
CALL #MULTI_FB2 (
TEST_IN1 := L#77,
TEST_OUT1 := #TEMP1,
)
L #TEMP1
__ASSERT== __ACCU 1, 79 // result = input + 2
// Call the multi-instance SFB 0
CALL #MULTI_SFB0 (
CU := FALSE,
CV := #COUNT,
)
CALL #MULTI_SFB0 (
CU := TRUE,
CV := #COUNT,
)
CALL #MULTI_SFB0 (
CU := FALSE,
CV := #COUNT,
)
L #COUNT
__ASSERT== __ACCU 1, 1
// Check all instance-DB values.
// Use fully qualified accesses to avoid implicit usage of AR2 base.
L DINO // DI = DB1
__ASSERT== __ACCU 1, 1
L DB1.DBW 0 // DB1.GUARD0
__ASSERT== __ACCU 1, W#16#4220
L DB1.DBD 2 // DB1.MULTI_FB2.TEST_IN1
__ASSERT== __ACCU 1, 77
L DB1.DBW 6 // DB1.MULTI_FB2.TEST_OUT1
__ASSERT== __ACCU 1, 79
L DB1.DBD 8 // DB1.MULTI_FB2.TEST_STAT1
__ASSERT== __ACCU 1, 78
L DB1.DBW 12 // DB1.MULTI_FB2.TEST_FB3.V1
__ASSERT== __ACCU 1, W#16#CAFE
L DB1.DBW 14 // DB1.GUARD1
__ASSERT== __ACCU 1, W#16#4221
L DB1.DBW 16 // DB1.MULTI_SFB0.CU/R
__ASSERT== __ACCU 1, W#16#0000
L DB1.DBW 18 // DB1.MULTI_SFB0.PV
__ASSERT== __ACCU 1, 0
L DB1.DBW 20 // DB1.MULTI_SFB0.Q
__ASSERT== __ACCU 1, W#16#0100
L DB1.DBW 22 // DB1.MULTI_SFB0.CV
__ASSERT== __ACCU 1, 1
L DB1.DBW 24 // DB1.MULTI_SFB0.CUO
__ASSERT== __ACCU 1, W#16#0000
L DB1.DBW 26 // DB1.GUARD2
__ASSERT== __ACCU 1, W#16#4222
END_FUNCTION_BLOCK
ORGANIZATION_BLOCK OB 1
BEGIN
CALL FB 1, DB 1
CALL SFC 46 // STOP CPU
END_ORGANIZATION_BLOCK
|
