User`s manual

Chapter 2 Front-Panel Operation

To Monitor a Channel or a Slot

You can continuously monitor the current status of a particular

switching channel, a digital I/O port, or an entire plug-in module.

Monitoring from the front panel is especially useful when developing and

debugging remote interface commands.

1. Press the monitor key, the MON annunciator lights up to indicate the

instrument is in the monitoring state.

2. Select the slot or the channel/port to be monitored. The displayed

information depends on the selected module type. Typical displays

are shown in the table on page 76.

3. If only part of the channel status on the module can be displayed at

one time, press Enter to display the next part.

For multiplexer modules and GP Relay modules, 10 channels can be

displayed at one time; for matrix modules, one Row or one Column

can be displayed at one time; for digital I/O modules, two 8-bit ports

can be displayed at one time. For multifunction modules, the first

function on the module is displayed, then the next.

4. Press the monitor key again to end monitoring (the MON

annunciator turns off).

Note The built-in digital I/O bits/port (on the controller module) can be

monitored either individually as bit channels (numbered 091 through

094) or as a 4-bit port (numbered 090). However, the individual bit

channels on a digital I/O or multifunction module (with a DIO function)

cannot be monitored.