Omron C200HE User Manual

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

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

T: Monitoring time (BCD)

IR, SR, AR, DM, HR, TC. LR, #

C: Control data

#

FPD(––)

C

T

D

D: First register word

IR, AR, DM, HR, LR

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.

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