curlyandshemp
Lifetime Supporting Member
But the 1771-QRD was way before the Contrologix. The BTR/BTW do not work the same as the MSG instruction. I think in your case the 1771-QRD responds to the first READ BTR then stops waiting for a TRUE-FALSE-TRUE transition for the next read. Try putting the AND NOT 1771QRD_READ.EN to enable the MSG intsruction in your case