Delta RMC101 - Manual (Page 261)

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.