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st-one-io / node-red-contrib-s7

A Node-RED node to interact with Siemens S7 PLCs
GNU General Public License v3.0
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String data type #94

Closed stesquality closed 2 years ago

stesquality commented 3 years ago

In Tia portal, I string data type in data block with address "P#DB1.DBX0.0". But in your detail it is written that "BDX" is for Boolean values. Could you please suggest me how can I use string values like text, etc.

gfcittolin commented 2 years ago

P#-like addresses are pointer addresses - that is, instead of the value itself, they contain the address where the actual value is stored. Right now the node does not support indirect/pointer addressing. One option to solve this is to program your PLC to copy the value you want to a known and fixed address, and then read from that address instead