Caen N568 B, Technical Information Manual, Page: 27 / 37

Document type: Title: Revision date: Revision:
User's Manual (MUT) Mod. N568B/LC 16 Ch Spectroscopy Amplifiers 26/01/2007 4
Filename: Number of pages: Page:
N568B_N568LC_REV4.DOC 37 27
Due to the 8-bit board, in the case of the A303 PC Controller, Operating Codes and Slave responses
are coded as 8-bit Bytes.
The Mod. A303A HIGH SPEED (H.S.) CAENET CONTROLLER is an ISA interface card. It allows
the control of an H.S. CAENET network through a standard PC.
The card can be mapped either in the I/O or Memory space of the PC (dip switch selectable).
Moreover the Mod. A 303A Controller can operate either in Polling or Interrupt mode (dip switch
selectable).
The communication line uses a simple 50
Ω
coaxial cable as its physical transmission medium.
The Mod. A1303 PCI CAENET CONTROLLER is a 32-bit PCI interface card. It allows the control of a
HS CAENET network through a standard PC.
The communication line uses a 50
Ω
coaxial cable as its physical transmission medium.
Table 4.12: HS CAENET PC CONTROLLERS registers
Register/Buffer Address Operation DESCRIPTION
TX FIFO Base Ad. + 0 write TX FIFO (512 byte max. depth)
Transmit Data Buffer.
START TX Base Ad. + 1 write Starts the transmission of the TX FIFO
data
RESET Base Ad. + 3 write Clears TX and RX buffers and resets
all the Interrupt signals.
RX FIFO Base Ad. + 0 read RX FIFO (512 byte max. depth)
Receive Data Buffer.
STATUS REGISTER Base Ad. + 1 read 8-bit Status register.
RESET INTERRUPT Base Ad. + 2 read Reads the Status register and clears a
present interrupt.
CLEAR RX FIFO Base Ad. + 3 read Clears the RX FIFO
4.7 BOARD CONTROL VIA OPC SERVER
CAEN, in close collaboration with CERN (IT/CO group), has developed an OPC server which allows
powerful, flexible, and yet simple control of its modules, indifferently through H.S. CAENET
communication path, by any OPC compliant client application.
Version 2.4 and later of CAEN HV OPC Server are fully compliant with the OPC Data Access 2.0
specifications. The A303A and the A1303 HS CAENET controllers allow to control the N568B and
N568LC via OPC server, through a complete set of programmable/monitorable items, which are
described in the following subsections. Anyway, for an extensive description, the CAEN OPC Server
User’s Manual is available too.
4.7.1 N568B / N568LC board control
This chapter describes the Items which are available for the control of the N568B / N568LC module.
A read access to the
ModelName item returns a string with the board model.
A read access to the
SwRelease item returns a string with the board software release.
A read access to the
CnetCrNum item returns the board Caenet crate number.
A read access to the
Slots item returns the number of the board’s slots (1).