Delta RMC151 - Manual (Page 692)

RMC70/150 and RMCTools User Manual
7.3.10.2. Configuring UI/O High-Speed Channels
Each of the Universal I/O module's two RS-422 channels are independently configurable as
Quadrature or SSI. These channels must be configured before being used for such tasks as
assigning to axis inputs. To configure the channels, open the UI/O properties:
1. In the Project Pane, expand the Modules folder
2. Double-click the desired UI/O module and choose Quad/SSI.
3. Each channel can be configured to operate in one of the modes listed in the table
below. See the sections below for instructions on configuring the channels for specific
uses.
Quadrature
Input
Is used by assigning to a control or reference axis.
• +/-A and +/-B differential inputs with wire break detection.
• One I/O point per channel (R0 for channel 0 or R1 for channel
1) can be used as a reference or home input for high-speed
count latching.
• Filtering on the R0/R1 input for use in high-speed latching is
configurable via an axis parameter.
• Termination on the A and B inputs can be enabled/disabled via
an axis parameter.
SSI Axis
Input
Is used by assigning to a control or reference axis. The following
items can be configured via axis parameters:
• SSI Clock Mode: Standard (Clock is output) or Monitor (Clock
is input)
• Wire Delay Compensation: Selects the amount to delay
sampling Data with respect to Clock. A wizard is provided to
calculate the proper value.
• SSI Input Termination: Enable/disable termination on the
Data input (and Clock input for Monitor mode)
• SSI Clock Rate: 250 kHz, 500 kHz, or 971 kHz
• SSI Data Format: Gray code or binary
• SSI Data Bits: 8-32
SSI Register
Input
Result is placed in any selected variable. This type of input cannot
be assigned to an axis.
The same configuration options as SSI Axis Input are provided for
this mode, but are located in the Quad/SSI setup page for the
module instead of in axis parameters.
SSI Output Outputs the contents of a selectable register over the SSI +/-Data
lines. Also, channel 1 has the option of automatically echoing the
data coming in on channel 0 (if configured as an SSI Axis/Register
Input) in which case a register is not selected. This is useful in cases
where the user wants to share the SSI feedback with other devices.
The following items can be configured through the Quad/SSI setup
page:
• SSI Output Mode: Master (Clock is output) or Slave (Clock is
input)
• SSI Termination (Slave mode only): Enable/disable
termination on the Clock input
• SSI Clock Rate: 250 kHz, 500 kHz, or 971 kHz
• SSI Data Format: Gray code or binary
672 Delta Computer Systems, Inc.