Omron CPM1 Programming Manual

330
Special Instructions Section 5-26
Example When IR 00000 is ON in the following example, the frame checksum (0008) is
calculated for the 8 words from DM 0000 to DM 0007 and the ASCII equiva-
lent (30 30 30 38) is written to DM 0010 and DM 0011.
5-26-7 FAILURE POINT DETECTION – FPD(––)
Limitations This instruction is available in the CQM1 only.
D and D+8 must be in the same data area when bit 15 of C is ON.
DM 6144 to DM 6655 cannot be used for T or D.
C must be input as a constant.
Description FPD(––) can be used in the program as many times as desired, but each
must use a different D. It is used to monitor the time between the execution of
FPD(––) and the execution of a diagnostic output. If the time exceeds T, an
FAL(06) non-fatal error will be generated with the FAL number specified in C.
The program sections marked by dashed lines in the following diagram can be
written according to the needs of the particular program application. The pro-
cessing programming section triggered by CY is optional and can used any
@FCS(––)
DM 0000
#0008
00000
DM 0010
Address Instruction Operands
00000 LD 00000
00001 @FCS(––)
# 0008
DM 0000
DM 0010
DM 0000 0001
DM 0001 0002
DM 0002 0003
DM 0003 0004
DM 0004 0005
DM 0005 0006
DM 0006 0007
DM 0007 0008
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 800
FCS
calculation
3 0 3 8DM 00113 0 3 0DM 0010
ASCII code
conversion
T: Monitoring time (BCD)
IR, SR, AR, DM, HR, TC. LR, #
C: Control data
#
Ladder Symbols Operand Data Areas
FPD(––)
C
T
D
D: First register word
IR, SR, AR, DM, HR, LR

Omron CPM1 Specifications

General

Brand	Omron
Model	CPM1
Category	Controller
Language	English