Renishaw SP25M Installationsanleitung Seite 26

SP25M installation and integration guide
www.renishaw.com
AC3 integration
AC3 analogue interface PC card - functionality overview
The AC3 is completely controllable by software. It contains a 16 byte register set in I/O space that can be accessed starting from the base
address selected in section AC3 software
The AC3 is a 16-bit IBM ISA bus plug-in PC card with two external connectors. It is simple to install and connects directly to a standard
Renishaw multiwire probe signal cable.
AC3 is specifically designed for use with SP25M and is not compatible with Renishaw's SP600 scanning probe (for SP600 use either AC1 or
AC2).
The AC3 is very similar to AC2 but has additional features, which are specific to the SP25M probe. Full details are given in this section of the
document.
SP25M and AC3 have been designed with a probe identification resistance of 9.375 kΩ.
NOTE: SP600 / AC1 or AC2 identification resistance is 30 kΩ.
AC3 also has its own board identification, which it presents to software.
The AC3 has the following attributes and functionality:
Performs probe management functions
Communicates status information to the host PC
Converts each of the SP25M analogue probe axis outputs into 2's complement binary numbers accessible to the PC
16‐bit resolution capable of giving better than 0.1 μm resolution
Optically isolated PICS (Renishaw's probe interconnection system) interface
Reading synchronisation using the PICS interface or software commands
Probe power removal using PICS
Full ISA bus address decoding
Optional 16-bit data transfers via the additional ISA 36-way connector
Interrupts generated on receipt of PICS or software AQUIRE command
ΔT controller compatibility is achieved by the use of option switches
The AC3 contains a number of registers that are accessible to software using I/O commands.
Issued 12 2021
interface.
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