Description
5X00481G01 New Emerson Ovation DCS Card
thereby controlling external devices or circuits.
1. Data buffering
Due to the low speed of I/O devices and the high speed of CPU and memory, a buffer must be set up in the controller. When outputting, use this buffer to temporarily store data transmitted from the host at high speed, and then transfer the data in the buffer to the I/O device at the rate that the I/O device has; During input, the buffer is used to temporarily store data sent from the I/O device. After receiving a batch of data, the data in the buffer is quickly transmitted to the host.
2. Error control
The device controller also manages error detection of data transmitted by I/O devices. If an error is found during transmission, the error detection code is usually set and reported to the CPU. The CPU then cancels the data transmitted this time and performs a new transmission. This ensures the accuracy of data input.
responsible for processing signals from on-site sensors or driving actuator actions. For example, they may need to cooperate with devices such
as BANNER travel switch T30UIPB to receive their transmitted position signals; Or by controlling components such as Burkert solenoid valve 00131421, the on/off of fluid media can be precisely managed.
these modules integrate more complex logic processing capabilities. The core task of a pressure switch is to detect whether the pressure
has reached a preset threshold and output a switch signal. Its function is highly specific and fixed. And modules 5X00481G01 and 1
C31219G01 have the ability to comprehensively judge multiple such switch signals and transmitter signals (such as transmitter 1066-P-HT-60),
and output complex control instructions according to internal logic.
