fx_wu

I am doing a commentary PL7 - 3 procedures to get stripe to the item of the PL7 PROs, the inside uses to some instruction concerning the TEXT BLOCKS FUNCTIONs, but the PL7 PROs can't convert them, for example:Promote TXT0, A,TXT0, M,TXT1, T, etc..Who can seek some solid examples for me.Tell me the principle of the communication perhaps, original PLC for 4 set TSX47s, pass the TELWAY communication, now is the PREMINUM P57, the ETHERNET communication.