BASI BUFM660 Series, Руководство пользователя

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18
The address number
(RS485)
In RS485 serial communication, the instrument is used
as slave, each one has an address number. The valid
number addresses are in the range 0-247.
Communications
setting
This parameter displays in the form of “Cabc”, the last
three digits “abc” are changeable, which decide the
baud rate
、
transmission mode and parity check.
The first digit “a” corresponds to baud rate (bit/s).
When a=0, the baud rate is 19200; a=1, the rate is
9600; a=2, the rate is 4800.
The second digit “b” corresponds to transmission
mode. When b=0, the mode is RTU; b=1, the mode is
ASCIIC (invalid now).
The third digit ”c” corresponds to parity check. When
c=0, means even check; c=1 means odd check; c=2,
means no check (8N2); c=3, means no check (8IN1).
Communications
delay
The delay time for meter to send the data after
receiving the master’s request. The format of this
parameters is “d-bc”, the last two digits “bc” are
changeable, and the value of “bc” decides the delay
time in milliseconds. Such as d-10 means the
instrument will send data after 10 milliseconds.
Status of relay No.1
(Correspond to
instantaneous flow
rate)
The format of this parameter is “EC-ab”, the front two
digits “EC” are unchangeable, the latter two “ab”
determine the states of relay No.1.
“a” corresponds to the contact status. When a=0, the
relay No.1 is normally open; a=1, the relay No.1 is
normally close.
“b” corresponds to the high or low alarm status. When
b=0, the relay No.1 is used as a low alarm, b=1, the
relay No.1 is a high alarm.
On and off point
value of relay No.1
(Correspond to
instantaneous flow
rate)
The on and off point value of relay No.1, when the
instantaneous flow rate is greater or less than this
value, then the relay No.1 will work as its setting
status. This parameter displays in form of 5 digit
number, they can be adjusted except the final “0”.
When all the five digits are “0”, then the relay No.1
will keep open status and stop working, no matter what
kinds of status value be set.
Status of relay No.2
(Correspond to
instantaneous flow
rate or Accumulated
Flow Pulse )
This parameter determines the status of relay No.2, its
setting form is same with previous Relay No.1.
But when it is set at “EC20”, the relay No.2 is used to
output the Accumulated Flow Pulse. Accumulated
flow for each additional 1m
3
, relay 2 will be