command using Modbus TCP/IP

command using Modbus TCP/IP

Hi all:) i am using Zenon 7.10 and i have PLC S7-400 from Siemens, the connection betwen the PLC and SCADA by Modbus TCP/IP protocol please chech my problem : when I create new variable (command Variable)and set the offset for it only (don,t attempent to send command yet):o, the driver which related to this variable crashed :eek: ,nothing can read using this driver now:confused:,when i delete this command variable the driver working again and i can read the variable value again (after creating this command variable it was invalid):confused:???!! regards,

This is a migrated post! Originally posted on 29.01.2014 by user ziadnajjar. Please be aware that information can be outdated.