Delta RMC151 - Manual (Page 947)

9 Register Reference
Data Type: Bits - see below
Description
This parameter is valid only on axes with SSI feedback. It tells the RMC how many data
bits your SSI encoder has. You must set this parameter to match your SSI transducer or
encoder. The SSI Data Bits range depends on the controller:
RMC70: 8-32 SSI data bits
RMC150 SSI Module: 8-31 SSI data bits
RMC150 UI/O Module: 8-32 SSI data bits
Changing this Parameter
Because this parameter affects motion, the axis must be disabled or in Direct Output
before writing to this parameter. The Enabled and Direct Output Status Bits indicate these
states of the axis. When changing this parameter from RMCTools, the software will
automatically do this for you. This may cause a halt on the axis, which is expected.
24-Bit Limitation
See the Exceeding 24 Bits section of the Feedback Resolution topic for details on the
24-bit resolution limitation of the SSI input.
Address Format Details
This section is for addressing the SSI Data Bits parameter when communicating with the
RMC from an external device. This information is not necessary when configuring the SSI
Data Bits in RMCTools.
The SSI Data Bits is selected with bits 12-17 in the MDT/SSI Configuration Register.
These bits are the binary representation of the number of data bits.
See the MDT/SSI Configuration Register for details about the register containing these
bits.
9.2.2.2.23.6. SSI Clock Rate
Type: Axis Parameter Register
RMC70 Address: %MDn.10/10-11, where n = 12 + the axis number
RMC150 Address: %MDn.10/10-11, where n = 24 + the axis number
System Tag: _Axis[n].MDTSSICfg.SSIClockRate
How to Find: Axes Parameters Pane, All tab: Feedback
Data Type: Bits - see below
Description
This parameter is valid only on axes with SSI feedback. You must set this parameter to
match your SSI transducer or encoder. The clock rate can be set to the following values:
RMC70 MA
Module
RMC150
SSI
Module
RMC150
UI/O
Module
100 kHz
150 kHz
250 kHz
375 kHz 230 kHz
921 kHz 250 kHz
500 kHz
971 kHz
Changing this Parameter
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