Lumel P30U series - Page 40

41
41
Master
 or by entering value 2” into the register 4042.
In the Master mode the following parameters should be configured
inthe
Mbus 485
menu:
 The parameters (4 - 6) may also be configured by RS-485
(registers4048-4052)beforetheRS-485Mastermodeisselected.
After selecting the RS-485 Master mode it is impossible for other
Masterdevicetopollthetransducer.
 All values read in Master mode are available as a floating
pointvaluesinregistersfromrange8000...8049.,firstredoutvalueis
placedinregister8000,secondvaluein8001registeretc.
Inthetransducer
Mbus 485
menuthereistheparameter
No.ofErr
,
which defines the admissible number of incorrect responses
to the transducer request (number of repeated requests before
anerrorisdisplayed).Thatparameterisalsomodified byRS-485(regi-
ster4005)beforetheRS-485Mastermodeisselected.Ifinputtype
Input → RS-485 is selected,  the first register being polled is
Item
Mbus 485
1
Address
Addressofthedevicebeingreadout
2
ModeUnit
Transmissionmodeontheconnection
3
BaudRate
Baudrate
4
Base.Reg
Numberofthefirstreadoutregister
5
No.ofVal
Numberofreadoutvalues
6
ValType
Typeofreadoutvalues
7
Interv.
Readoutinterval[x100ms]
8
AnswTime
Maximalresponsetime[ms]
9
Mode
WorkingmodeofRS-485interface
10
Mast.Fun
Kindofusedmasterfunction(0x03or0x04)
11
No.OfErr
Admissiblenumberofincorrectresponsestothetrans-
ducer request (number of repeated requests before
anerrorisdisplayed)
Table10