A
Hi, I'm an old reader but new joiner of this community.
Right now I'm actually facing this problem: the plant where I'm now working at has an Advant PLC that's controlling part of the motors, with program running at 250 ms. This PLC is modbus interfaced to a DCS, whose control module scan time is now 250 ms too, but as the customer has filled it with several logics, now the available processor idle time is below alert levels, making difficult any on line download to it.
My idea would be to raise DCS control modules' scan time up to 500ms, but customer fears problems with communication and possible shut downs.
What's your opinion about that?
Thanks in advance
Right now I'm actually facing this problem: the plant where I'm now working at has an Advant PLC that's controlling part of the motors, with program running at 250 ms. This PLC is modbus interfaced to a DCS, whose control module scan time is now 250 ms too, but as the customer has filled it with several logics, now the available processor idle time is below alert levels, making difficult any on line download to it.
My idea would be to raise DCS control modules' scan time up to 500ms, but customer fears problems with communication and possible shut downs.
What's your opinion about that?
Thanks in advance