Delta RMC151 - Manual (Page 942)

RMC70/150 and RMCTools User Manual
System Tag: _Axis[n].PriInputBits.NegLimitIn
How to Find: Axes Parameters Pane, All tab: Feedback
Data Type: bits
Default Value: 0 (none)
Description
Each RMC axis allows for optional physical limit inputs to specify the boundaries in which
the axis is allowed to operate. Each axis can have two physical limit inputs: Positive Limit
Input and Negative Limit Input. Typically, these inputs are wired to limit switches.
The physical limit inputs differ from the Travel Limits, which limit the range of travel of an
axis based on the feedback (position, pressure, etc.). The Travel Limits are required to be
set on an axis; physical limit inputs are optional.
The Negative Limit Input bit parameter selects which discrete input, if any, should be
used as a 'Negative Limit Input'. For details on physical limit inputs, and the options of
this parameter, see the Physical Limit Inputs topic.
In RMCTools, this parameter will allow you choose an input from the drop-down box.
Inputs will be listed by their address. Use the Discrete I/O Configuration editor to find the
addresses of inputs.
The following options are possible:
Option Description
none This is the default setting.
Fault
Input
RMC70: The Fault Input of the axis.
RMC150: The Fault Input of the axis. Only available
on the Quadrature Module.
Dedicated Available on RMC70 QA and RMC150 Quadrature
modules only. This is the NegLim input on the
module.
general
input
RMC70: any input from a D8 module, but only from
the first 12 I/O points as listed in the I/O Monitor.
RMC150: any general discrete input from any
module.
Negative Limit Format Details
This section is primarily for addressing the Negative Limit Input parameter when
communicating with the RMC from an external device. This information is not necessary
when configuring the Negative Limit Input in RMCTools.
The Negative Limit Input is selected with bits in the Primary Input Bits register, as shown
in the following table:
RMC70
Value
of
bits 8-
11
Negative Limit
Input
0 none
1 Fault Input
2 Dedicated
(RegY/NegLim)
3 -
RMC150
Value of bits 16-23
Negative Limit
Input
0 none
1 Fault Input
2 Dedicated
(RegY/NegLim)
3 -
(32 x slot) + (i/o point) + 4 %IXslot.(i/o point)
922 Delta Computer Systems, Inc.