PVSS2 General Purpose Interface for serial devices. Date: 17.06.2004. Serial Devices. Serial device: a device which communicates with the outside world through an interface where the data are shifted in and out in a serial way (one after the other).
Serial device: a device which communicates with the outside world through an interface where the data are shifted in and out in a serial way (one after the other)
Most successful serial data standard for PC and telecom applications is RS-232. Similarly, RS-485
and RS-422 are among the successful standards for industrial applications. The standards are not
Examples of serial devices: The PC mouse, modems, numerous measurement equipment,
(volt/ampere meters, multimeters) PC controlled industrial equipment, etc.
RS-232: single-ended signals standard for serial communication with Baud rates of 2400 to 19200
over distances from 900 to 15 meters. Data-rate capability of about 1Mbps.
RS-422: differential signals standard for transmission over much greater distances.
RS-485: improved version of the RS-422 standard for longer line lengths and more nodes on a bus
For more info: type: “how to”, RS-232, RS-422, RS-485 in Goooooogle
PVSS2 and serial devices
There are more solutions, however the above mentioned use the software resources, which come
The Heinzinger PNC 150000KV Very High Voltage supply
This power supply will provide a 100KV DC voltage to the central electrode of the Alice TPC Field Cage.
It will be accessed by the DCS via an RS-232 interface and controlled by an SCPI commands set.
SCPI stands for Standard Commands for Programmable Instruments, which is a sort of IEEE 488.2
(GPIB) like commands set.
SCPI commands: These are alpha-numerical strings as: VOLT_10000 or MEAS:CURR? , which means set 10KV at output and measure actual output current.
Selected Interface Option: IEC driver in PVSS2 with a redundant controller PC.
Present Status: Controller PC loaded with PVSS2 version 3.0 and starting to setup test project
using the IEC driver.
Future Activities: Implement the full control of this device with the IEC driver in PVSS2.
Propose a common solution for serial devices, which can be included in the IT-CO Framework for