Error "transfer error within data block instruction"

Why am I getting the error message in the picture?What is the reason for this? Where should I look for a solution?

plc won't come out of stop mode.

"transfer error within data block instruction"

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Split from s5 stl instruction help.

hi;

When the program processing sequence comes from

C db0

to

L dw1

, plc switches to stop mode. Why does it do this?

When I type fw1 instead of dw1, it does not go to stop mode.

Hello / iyi gunler

your FB receives 2 values: QTNR and QOFF - probably some kind of "number" and "offset" ?

It adds them (QTNR + QTOFF) and resulting number uses as a number of datablock that it tries to open. So:

1. inside of your PLC, there must be a DB number (QTNR+QTOFF)

2. the abovementioned DB must have at least DW1 and DW2

If any one of conditions 1 or 2 isn't fullfilled, your PLC doesn't know what to do and goes to STOP.

Maybe you should check where is your FB called and with which real parameters.

Good luck

Petr