Hi All
I am using Compact Logix L35E with Beijer Touch Screen T100 as HMI. I have a following problem:
There is a field (multiple choice object) on HMI screen, that depending upon its value, turns a PID from manual to auto or auto to manual (If Multiple choice value = 1, then PID mode = 1 (AUto) ). This field is also event driven, means user must put a value inorder to make it change the mode. Inside my ladder logic, i am waiting for that event o take place. The thing is i would also like do the same thing from remote end. Actually, i want to operate this field from a DCS. For example if DCS will send a Physical signal to my plc panel, and based on that physical signal i am changing the choice of this field, which in turn change the mode of PID.
Lets talk abt a scenario to justify my explanation: lets say from the HMI screen, operator turns the PID to Manual Mode, now, dcs Sends a command to one of my physical channels, based on the state, i have to change the PID mode to Auto. So the multiple choice field is being written from two locations, how can i make it like that and safe as well.
Thanks in advance
I am using Compact Logix L35E with Beijer Touch Screen T100 as HMI. I have a following problem:
There is a field (multiple choice object) on HMI screen, that depending upon its value, turns a PID from manual to auto or auto to manual (If Multiple choice value = 1, then PID mode = 1 (AUto) ). This field is also event driven, means user must put a value inorder to make it change the mode. Inside my ladder logic, i am waiting for that event o take place. The thing is i would also like do the same thing from remote end. Actually, i want to operate this field from a DCS. For example if DCS will send a Physical signal to my plc panel, and based on that physical signal i am changing the choice of this field, which in turn change the mode of PID.
Lets talk abt a scenario to justify my explanation: lets say from the HMI screen, operator turns the PID to Manual Mode, now, dcs Sends a command to one of my physical channels, based on the state, i have to change the PID mode to Auto. So the multiple choice field is being written from two locations, how can i make it like that and safe as well.
Thanks in advance