IO monitor command IO monitor command Syntax IO signal_group Function Display the current states of external digital input/output signals and/or internal software signals. Parameter signal_group Optional integer value that, if specified, selects which digital signals are to be displayed. Details The IO command can be used to monitor the system digital signals. If no signal group is specified, all the input and output signals are displayed. If a signal group is specified, the value must be one of those shown below to have the corresponding signal group displayed.
Displaying a single group is useful when the system has so many signals installed that the standard display would produce more than one full screen of output. A "1" is displayed for each signal that is on, a "0" is displayed for each signal that is off, and a "-" is displayed for each signal that does not have hardware configured for it. Example The following is a sample display from an IO 0 command: 0032-0001 ---- ---- ---- ---- ---- ---- 0000 0110 eV+Operating System Reference Guide, 2.x,18321-000 Rev A Page 111 Signal group Signals displayed 0 Digital output signals 1 Digital input signals 2 System software signals 3 The 3000 series of digital output signals