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Old June 13th, 2014, 06:40 AM   #1
Saudi Arabia

antonydias is offline
Join Date: Dec 2007
Location: Jeddah
Posts: 13
Question Unable to control vlt2800 via profibus using s7300

I am unable to control an Danfoss inverter VLT 2800 via profibus using Siemens S7300 PLC.
Communication between PLC & VLT 2800 is established using Type PPO 3(I/O address 256).

I programmed as follows

L W#16#047E
T PQW 256
L W#16#4000
T PQW 258

But the inverter is not getting start commands.

Kindly guide
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