Omron C200HE ユーザーズマニュアル

Refer to 6-1 Cycle Time for a table showing I/O refresh times for Group-2
High-density I/O Units.

ER:

St or E is not BCD between #0000 and #000F.

St is greater than E.

N: Number of words (BCD)

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

SB: Source beginning word

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

D: Destination word

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

BCNT(67)

N

SB

D

@BCNT(67)

N

SB

D

N must be BCD between 0000 and 6656.

When the execution condition is OFF, BCNT(67) is not executed. When the
execution condition is ON, BCNT(67) counts the total number of bits that are ON
in all words between SB and SB+(N–1) and places the BCD result in D.

N is not BCD, or N is 0; SB and SB+(N–1) are not in the same area.

The resulting count value exceeds 9999.

Indirectly addressed DM word is non-existent. (Content of 

DM word is

not BCD, or the DM area boundary has been exceeded.)

ON when the count (N) exceeds the data area boundary.

EQ:

ON when the result is 0.

C: Control data

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

: First word in range

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

D: First destination word

IR, SR, AR, DM, HR, LR

FCS(––)

C

R

1

D

@FCS(––)

C

R

1

D

FCS(––) can be used to check for errors when transferring data through commu-
nications ports.

When the execution condition is OFF, FCS(––) is not executed. When the
execution condition is ON, FCS(––) calculates the frame checksum of the speci-
fied range by exclusively ORing either the contents of words R

1

 to R

1

+N–1 or the

bytes in words R

1

 to R

1

+N–1. The frame checksum value (hexadecimal) is then

converted to ASCII and output to the destination words (D and D+1).