Delta RMC101 User Manual Page 261

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Digital I/O 5.1
Communications 5-11
been set up to trigger a Soft or Hard Stop by the Auto Stop word, then the Ready output will turn
off even if the Run/Stop output is on. Therefore, the Ready output will be on if the Run/Stop output
is on and there are no Auto Stop errors on any of the selected axes.
This dialog box has two available commands:
Update RMC
This command sends the Communication Digital I/O options to the RMC, issues an Update Flash
command, and resets the RMC to make all changes take effect.
Cancel
This command closes the options dialog and discards any changes made.
5.1.6.2 Features Shared by All Modes
There are several details that are common between the Digital I/O modes (Parallel Position, Input
to Event, Command, and Parallel Event). These are described here.
Inverting Inputs and Outputs
It is possible to invert any Communication Digital I/O input or output. Refer to Communication
Digital I/O for instructions on inverting the bits.
CPU Input 0 - Run/Stop
Note: This special functionality is valid only if there is a DI/O module in the comm (leftmost) slot.
This input is edge-sensitive. On the rising edge (0 to 1 transition), a Set Parameters command is
sent to each axis. On the falling edge (1 to 0 transition), a Disable Drive Output command is sent
to each axis. This input should be set low when drive or hydraulic power is turned off.
CPU Output 0 - Ready
Note: This special functionality is valid only if there is a DI/O module in the comm (leftmost) slot.
With RMC CPU firmware dating prior to 20011112, this input echoes the Run/Stop input
described above. That is, when the axes are initialized because of a rising edge of the Run/Stop
input, this output will turn on, and it will go off when the Run/Stop input goes off.
With RMC CPU firmware dating 20011112 or later, the user can also use this output to indicate
that an error occurred on a group of axes. If an error bit turns on in the Status Word for any of the
selected axes, and that error bit has been set up to trigger a Soft or Hard Stop by the Auto Stop
word, then the Ready output will be off even if the Run/Stop output is on. Therefore, the Ready
output will be on if the Run/Stop output is on and there are no Auto Stop errors on any of the
selected axes.
To select the axes that use this error indication, use the Communication DI/O Options dialog
box, as described in Using the Communication Digital I/O. By default no axes are selected, so the
behavior matches that of pre-20011112 firmware.
CPU Output 1 - Command Acknowledge
Note: This special functionality is valid only if there is a DI/O module in the comm (leftmost) slot.
This bit toggles each time a new command is received. The criteria for a new command varies on
the mode used; refer to the appropriate mode description for details. This output deglitches inputs
and simplifies programming.
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