KEYENCE DL-RB1A User Manual

Page 31

3-1

Data Processing and Operation Modes

Ad
va

unc
tion



Time chart

(1) An external device inputs "ID No. 01" as the ID No. selection.
(2) After at least 2 ms have passed, DL-RB1A DRQ input from the external device turns on.
(3) Within 2 ms of the DRQ input turning on, DL-RB1A turns on the strobe output.
(4) The external device confirms that the strobe output is on and imports the DL-RB1A BCD

output.

(5) An external device the DL-RB1A DRQ input. (The strobe output and DL-RB1A BCD output

turn off within 2 ms.)

(6) An external device inputs "ID No. 02" as the ID No. selection.
(7) After at least 2 ms have passed, DL-RB1A DRQ input from the external device turns on.
(8) Within 2 ms of the DRQ input turning on, DL-RB1A turns on the strobe output.
(9) The external device confirms that the strobe output is on and imports the DL-RB1A BCD

output.

(10)An external device turns off the DL-RB1A DRQ input. (The strobe output and DL-RB1A

BCD output turn off within 2 ms.)

ID No.
selection input

(1) ID No. 01 selected

(6) ID No. 02 selected

DL-RB1A
DRQ input

(2) ON

OFF

(5) OFF

DL-RB1A
strobe output

(3) ON

OFF

DL-RB1A
DRQ input

(7) ON

OFF

(10) OFF

DL-RB1A
strobe output

(8) ON

OFF

DL-RB1A
BCD output

Data update

OFF*

DL-RB1A
BCD output

Data update

OFF*

2 ms min.

2 ms max.

2ms max.

(4) ID No. 01 BCD data

(9) ID No. 02 BCD data

*BCD output (pin Nos. 6 to 31) and alarm output (pin No. 32) are all turned off, regardless of whether the

output logic is positive or negative.