XG555 CAN to DeviceNet Gateway
1
April 21, 2005
General Operation
At power-on, transducer setup data is read from the local flash storage. Continuous interrogation
of the transducers is started. The unit will now respond to requests for position information from the
Device Net interface.
Transducer position information is acquired from each transducer and is updated into local
memory continuously. The position information is returned to the host in 32-bit signed integer format on
the device net interface. Values returned over the DeviceNet interface have the same resolution as the
transducer. The position values of all magnets on a particular transducer are offset by a zero value
independent to that transducer which is stored in flash. This value can be set through the DeviceNet
interface. All positions returned from the control to the host via the DeviceNet will be offset by this value.
Status
Basic status information is provided via the 2 by 16 character display. After the hardware has been
initialized, the display will print a screen containing information about the transducers. The number of each
transducer (1 through 8) is listed, followed by one of the following: “OK”, indicating the transducer is
functioning properly; “MM”, indicating missing magnets; “NR”, indicating no response; and “--”,
indicating that no transducer is setup.
Pressing the enter key while viewing this status screen takes you to the setup menu.
Setup
Setup can be accomplished via a terminal attached to the RS232 serial port of the XG555, or by
using the display and keypad integrated into the XG555 front panel.
Front Panel Setup
The front panel keypad provides 4 keys as described in the following table.
Key Function
ENT
Enter, select an option or store a value
ESC
Cancel an operation or move up in the menu
Up Arrow
Increment a number or selection
Down Arrow
Decrement a number or a selection
The setup menus can be accessed by pressing the enter key while viewing the transducer status
screen. Navigate the setup options by using the arrows. Press enter to view a sub menu or edit a value.
Press cancel to return to the parent submenu or to return to the transducer status screen if there is no parent
submenu.
When editing a value, the arrow keys are used to change the value, cancel exits editing without
keeping changes, and enter exits editing and keeps changes. You must select the “Save Setup” option to
commit changes to permanent storage.
The front panel contrast can be adjusted by holding the down arrow while the XG555 starts.
Release the button after the contrast adjustment screen is displayed. Press the up and down arrows to adjust
contrast and press enter when finished.
To add a transducer, follow these steps:
1. Enter the transducer’s serial number.
2. Enter the number of magnets installed on the transducer.
3. Enable the transducer.
4. Select “Save Setup” from the first setup menu.