342
Special Math Instructions
Section 5-23
One or more operands have been set incorrectly.
D and D+N+1 are not in the same data area.
Example
In the following example, the content of IR 040 is set to #0000 and then incre-
mented by 1 each cycle. For the first two cycles, AVG(––) moves the content
of IR 040 to DM 1002 and DM 1003. On the third and later cycles AVG(––)
calculates the average value of the contents of DM 1002 to DM 1004 and
writes that average value to DM 1000.
5-23-4 SUM – SUM(––)
Limitations
The 3 rightmost digits of C must be BCD between 001 and 999.
DM 6143 to DM 6655 cannot be used for D.
If bit 14 of C is OFF (setting for BCD data), all data within the range R
1
to
R
1
+N–1 must be BCD.
@MOV(21)
040
#0000
00001
Address Instruction
Operands
00000
LD
00001
00001
@MOV(21)
#
0000
040
00002
AVG(
−−
)
040
#
0003
DM
1000
00003
CLC(41)
00004
ADB(50)
040
#
0001
040
AVG(
−−
)
#0003
040
DM 1000
CLC(41)
ADB(50)
#0001
040
040
1st cycle
2nd cycle
3rd cycle
4th cycle
DM 1000
0000
0001
0001
0002
Average
DM 1001
Used by the system.
DM 1002
0000
0000
0000
0003
Previous
DM 1003
---
0001
0001
0001
values of
DM 1004
---
---
0002
0002
IR 40
1st cycle
2nd cycle
3rd cycle
4th cycle
IR 040
0000
0001
0002
0003
C
:
Control data
IR, SR, AR, DM, EM, HR, LR, #
R
1
:
First word in range
IR, SR, AR, DM, EM, HR, TIM/CNT, LR
Ladder Symbols
Operand Data Areas
D
:
First destination word
IR, SR, AR, DM, EM, HR, LR
SUM(
−−
)
C
R
1
D
@SUM(
−−
)
C
R
1
D
