Delta Tau GEO BRICK LV Guide D’Exploitation
Turbo PMAC/PMAC2 Software Reference
Turbo PMAC On-line Command Specification
358
M{constant}->TWR:{address}
Function:
Resolver Thumbwheel-Multiplexer M-Variable Definition
Scope:
Global
Syntax:
M{constant}[..{constant}]->TWR[:]{multiplex address},
{offset}
{offset}
where:
{constant} is an integer from 0 to 8191 representing the number of the M-variable;
the optional second {constant} must be at least as great as the first {constant} -- it represents
the number of the end of the range;
the number of the end of the range;
{multiplex address} is an integer constant, divisible by 2, in the range 0 to 254, representing
the address in the multiplexing scheme of the Acc-8D Option 7 resolver-to-digital converter board on
the thumbwheel multiplexer port, as determined by the DIP switch settings on the board
the address in the multiplexing scheme of the Acc-8D Option 7 resolver-to-digital converter board on
the thumbwheel multiplexer port, as determined by the DIP switch settings on the board
{offset} is an integer constant from 0 to 7, representing the location of the device at the specified
multiplexer address, as determined by in the buffer on the Acc-8D Option 7 and the actual pins to
which the device was wired.
multiplexer address, as determined by in the buffer on the Acc-8D Option 7 and the actual pins to
which the device was wired.
This command causes Turbo PMAC to define the specified M-variable or range of M-variables to point to
a 12-bit word from a resolver-to-digital (R/D) converter or similar device serially multiplexed on the
thumbwheel port on an Acc-8D Option 7 or compatible board.
a 12-bit word from a resolver-to-digital (R/D) converter or similar device serially multiplexed on the
thumbwheel port on an Acc-8D Option 7 or compatible board.
The address on the multiplex port specified here must match the address set by the DIP switches on board
the Acc-8D Option 7. The Acc-8D Option 7 manual contains a table listing all of the possibilities.
the Acc-8D Option 7. The Acc-8D Option 7 manual contains a table listing all of the possibilities.
One of the DIP switches on the Acc-8D Option 7 board determines whether the R/D converters on board
have offset values of 0 to 3 or 4 to 7. The {offset} specifier must match this DIP switch setting and
the number of the R/D device on the board.
have offset values of 0 to 3 or 4 to 7. The {offset} specifier must match this DIP switch setting and
the number of the R/D device on the board.
This is a read-only M-variable format. Use of this variable in an on-line query command or a program
statement will cause Turbo PMAC to clock in 12 bits of unsigned data (range 0 to 4095) from the
specified device through the multiplexer port.
statement will cause Turbo PMAC to clock in 12 bits of unsigned data (range 0 to 4095) from the
specified device through the multiplexer port.
Note:
It is not necessary to use an M-variable to access an R/D converter for actual servo
or phasing feedback purposes. I-variables (Ixx10, Ixx81, Ixx98, Ixx99) are used
for that purpose. However, even if this is the only use of the R/D converter,
usually it is desirable to assign M-variables to the R/D converters for set-up and
diagnostic purposes.
or phasing feedback purposes. I-variables (Ixx10, Ixx81, Ixx98, Ixx99) are used
for that purpose. However, even if this is the only use of the R/D converter,
usually it is desirable to assign M-variables to the R/D converters for set-up and
diagnostic purposes.
Example:
M100->TWR:0,0
M99->TWR:4,5
M99->TWR:4,5
See Also:
M-Variables (Computational Features)
On-line commands M{constant}, M{constant}->,
M-Variables (Computational Features)
On-line commands M{constant}, M{constant}->,
M{constant}->TWS:{address}
Resolver-to-Digital Converter Board (Acc-8D Opt-7) Manual
M{constant}->TWS:{address}
Function:
Serial Thumbwheel-Multiplexer M-Variable Definition
Scope:
Global
Syntax:
M{constant}[..{constant}]->TWS[:]{multiplex address}
where:
{constant} is an integer from 0 to 8191 representing the number of the M-variable;