![background image](http://html1.mh-extra.com/html/omron/sysmac-c200hs/sysmac-c200hs_operation-manual_742436295.webp)
285
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 equivalent
(30 30 30 38) is written to DM 0011 and DM 0010.
@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
8
0
0
FCS
calculation
3 0 3 8
DM 0010
3 0 3 0
DM 0011
ASCII code
conversion
5-25-12 FAILURE POINT DETECTION – FPD(––)
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, AR, DM, HR, LR
Limitations
D and D+8 must be in the same data area when bit 15 of C is ON.
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 proces-
sing programming section triggered by CY is optional and can used any instruc-
tions but LD and LD NOT. The logic diagnostic instructions and execution condi-
tion can consist of any combination of NC or NO conditions desired.
SR 25504
(CY Flag)
FPD(––)
T
C
D
Processing after
error detection.
Execution
condition
Branch
Logic
diagnostic
instructions
Diagnostic
output
Special Instructions
Section 5-25
Содержание SYSMAC C200HS
Страница 1: ...Cat No W235 E1 05 C200HS SYSMAC Programmable Controllers...
Страница 2: ...C200HS Programmable Controllers Operation Manual Revised February 2002...
Страница 3: ...iv...
Страница 5: ...vi...
Страница 379: ...371 SR word Corresponding key s Bit 279 03 04 05 3 06 07 VER 08 09 Monitoring Operation and Modifying Data Section 7 1...
Страница 470: ...468 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage...
Страница 471: ...469 Programmer Program Date Page TC address T or C Set value Notes TC address T or C Set value Notes Timers and Counters...