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8 PROGRAMMING

MELSEC-QnA

(3) Create a program which checks and interlooks the data-link status at remote I/O

station, remote device station and local station.
Also, create an error-handling program.

FROM H0000 H0680 K4MO K4

Xn0

XnF

Xn1

SW0080 (other station's data link status)

Error-handling program

Station No.1

Normal program

Station No.2

Normal program