9
9
If duplicate devices are detected, device type info may be incorrect due to the
simultaneous traffic from multiple devices causing an error.
To troubleshoot duplicates, go to the
TSIT Error or Duplicate menu and send a
command to the device address to
activate the device’s LED. The devices
set to the displayed address will have
their LEDs lit as long as TSIT displays
their address. In the example shown, any
devices with LEDs at address 192 would
have the LEDs lit.
The technician can put the instrument down, but powered, and proceed to
find the lighted LEDs to help repair the fault.
Other IDNet Tests
In the example given above, two Photo Sensors were both set to address
192. Let's suppose that you have gone out, located the devices by the LED,
and re-addressed them. If you wish to check them to be sure there are no
other problems, you could run all IDNet tests again, repeating the steps
outlined earlier in this document.
If you just wish to run the Duplicate Address test, scroll through the menu
choices until that selection is displayed and press ENT.
The IDNet Tests which may be run individually are:
Device Search (finds devices and addresses 0-255)
Duplicate Address (detects devices set to the same address)
Check Device State (Alarm, open, short, etc.)
Earth Fault Search (use only if ISO devices are on the loop)
View Found (scroll through a list of devices)
IDNet Shorts
If the tester is connected to a loop that is shorted, or has a much greater
current demand than expected, it will not be able to communicate with IDNet
devices. It may receive faulty data if communications are attempted. The
TSIT has a warning screen when such a channel is tested. Follow the
instructions on the screen. A test can be forced, in cases where the high
current is due to excess IDNet devices (many more than 250). But the loop
should be checked for hard shorts and stray voltages before forcing a test.
ENT
Address: [192]
PHOTO
DUPLICATE DEVICE
Press MENU to quit
