Omron C200HE User Manual

When IR 00000 is ON and SR 28908 (the Communications Board Port A Instruc-
tion Execution Flag) is OFF, communications sequence 100 is called in the Com-
munications Board and data is transferred through Communications Board
port A.

Send data is read from the range of words beginning at DM 0000 (the first output
word) and reception data is stored in the range of words beginning at DM 0010
(the first input word).

00200

LD

00000

00201

AND NOT

28908

00202

PMCR(––)

#

1100

DM

0000

DM

0010

PMCR

#1100

DM0000

DM0010

00000

28908

Advanced I/O instructions enable control, with a single instruction, of previously
complex operations involving external I/O devices (digital switches, 7-segment
displays, etc.).

There are five advanced I/O instructions, as shown in the following table. All of
these are expansion instructions and must be assigned to function codes before
they can be used.

7-SEGMENT DISPLAY OUTPUT

7SEG(––)

BCD output to 7-segment dis-
play

DIGITAL SWITCH INPUT

DSW(––)

Data input from a digital switch

HEXADECIMAL KEY INPUT

HKY(––)

Hexadecimal input from 16-key
keypad

TEN-KEY INPUT

TKY(––)

BCD input from 10-key keypad

MATRIX INPUT

MTR(––)

Data input from an 8 x 8 matrix

Although TKY(––) is used only to simplify programming, the other advanced I/O
instructions can be used to shorten cycle time, reduce the need for Special I/O
Units, and reduce system cost. With the exception of TKY(––), however, the ad-
vanced I/O instructions can only be used once each in the program and cannot
be used for I/O Units mounted to Slave Racks, where Special I/O Units must be
used.

S: First source word

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

7SEG(––)

S

O

C

C: Control data

000 to 007

O: Output word

IR, SR, AR, DM, HR, LR

S and S+1 must be in the same data area.

DM 0000 to DM6143 can be used for O.