Document: LT0439 Vigilant
MX1-Au
Operator Manual
Issue 1.73
23 October 2018
Page 8-7
The
DEVICES
F4 command on the
MX
Loop Status screen can be
used to scan that
MX
Loop for all
MX
devices present
– even if the
MX1
has no, or a different, datafile present.
This can be used, for example, at installation time to check all devices
have been installed, wired and addressed correctly, even without any
datafile having been programmed into the
MX1
.
It can also be used if a foreign device is found (P241/26/5 goes into fault)
by looking through each loop for FRGN devices, or when a loop break is
present to identify those devices on each side (L or R) of the break.
The
MX1
will poll every address from 0 to 255 (note addresses 0 and
251-255 are not supported by the
MX1
for configured devices) and
attempt to identify the type of device present (this may fail if two or more
devices are present at the same address).
Figure 8-6b shows an example resulting display.
Fig 8-6b – Example
MX
Loop Scan Display
Each screen will show 4 addresses (e.g., 0, 1, 2, 3) plus:
The device type
– blank if no device is present at that address.
L, R, or LR to indicate the device is visible from the left side, right side
or both left and right side of the loop.
DUP if two or more devices are present at the address.
MISM if the device type does not agree with the type programmed in
the
MX1
’s datafile.
FRGN if the device is not programmed at all in the
MX1
’s datafile.
UNDR if the address is 0 (under-addressed).
OVER if the address is 251-255 (over-addressed).
NEXT
F3 and
PREV
F2 can be used to step through the various
addresses.
Scanning for
MX Devices
|
P000:
P001:814CH LR
P002:814CH LR
P003:814CH LR
|
PREV
|
|
NEXT
