Panasonic MEW01091, Руководство по эксплуатации

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Panasonic Electric Works Nordic AB
MEW01091 Rev: 3 EBL128 Operating Instructions V1.1.x
113
28.8 Display statistics for COM loop (H5/A8)
The statistics can be used during commissioning, service, etc.
Pollings are the number of pollings ("questions") sent out by EBL128
to the units connected on the COM loop.
Parity is the received number of parity faults and % parity faults in
relation to the pollings.
Bit length is the received number of bit length faults and % bit length
faults in relation to the pollings.
No. of bits is the number of bit faults and % bit faults in relation to the
pollings. (Bit fault / incomplete answer.)
The Parity , Bit length and No. of bits values shall normally be "0" or
as close to "0" as possible. If not, there are some communication
problems that have to be investigated. Check the COM loop
connections and the loop units. Check so that the COM loop cable is
not placed too close to high voltage cables, etc. that might cause
communication disturbance / problems.
NOTE! All values are set to "0" after a restart and when you re-
connect the COM loop (via menu H5/A1).
Action Text in display Comments
"Access"
According to chapter
"Access code for service
and maintenance", see
page 104.
Disconnect / Re-connect COM loop
ACCEPT? A1
Scroll to menu A8
Display statistics for COM loop
ACCEPT? A8
"A"
Wait......
Pollings 1234567 Parity 000000 00.0%
No reply 000000 00.0% -->
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Press "

" to go forward.
Bit length 000000 00.0% <--
No. of bits 000000 00.0%
Press "

" to go back. or
press "A" to menu A8.
"A"
Display statistics for COM loop
ACCEPT? A8
Scroll or press "Return" to
H5. Scroll or press
"Return" to log off.
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Note! The values are not updated continuously, i.e. the shown values
were valid when "A" was pressed in menu A8. To see the new actual values,
go back to menu A8 and then press "A" again. Normally only the "Pollings"
value should be changed.