amykris
Member
Hi Hi,
I'm using an S7-200 PLC which is connected to a Wonderware InTouch 9.5 HMI. The PLC is being used to control the level in a tank. If the HMI is in start up mode and the HMI PC somehow fails or shuts down and the tank is in start up mode the tank will continue to full. I'm using the TCP/IP protocol to communicate the HMI to the PLC. I need to figure out a way in which the PLC can test for network communication so that in the event that this communication goes down the PLC can go into a shutdown mode and stop fulling the tank. How can i implement this in the ladder logic?
I'm using an S7-200 PLC which is connected to a Wonderware InTouch 9.5 HMI. The PLC is being used to control the level in a tank. If the HMI is in start up mode and the HMI PC somehow fails or shuts down and the tank is in start up mode the tank will continue to full. I'm using the TCP/IP protocol to communicate the HMI to the PLC. I need to figure out a way in which the PLC can test for network communication so that in the event that this communication goes down the PLC can go into a shutdown mode and stop fulling the tank. How can i implement this in the ladder logic?