RelaDyne LubriMist IVT, Инструкция по установке и эксплуатации

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LubriMist ® Model IVT
Oil Mist Generating System
Installation and Operating Manual
Page 124
of 256
Address
(HEX)
Length
In the black area the host computer is receiving the response from the IVT controller
([01] [01] [01] [02] [d0] [49]).
From the message frames and the different function codes that follow. Each set of numbers either
sending or receiving has meaning. The message frames sent and received will be broken down in
individual data groups to show what they mean.
Breakdown of each Function Code and it’s HEX Addresses
Coil status :
Function Code 01, this refers to the Digital Outputs on the IVT.
For a description of the digital outputs refer to (
Coil Status Addresses ) below.
Message frame being sent
[01] [01] [00] [00] [00] [01] [fd] [ca]
1) Device I.D. in
modscan screen has
to be the same as the
IVT location
2) In the Modscan
screen MODBUS
point type & Function
code are the same
thing. 3) Data sent out,
consisting of address
(hex) and length 4) Cyclical
Redundancy Checking
or CRC
[01] [01] ([00] [00]) ([00] [01]) [fd] [ca]
1) Device I.D.--- [01] has to be the same as the IVT I.D. (also known as the Slave Address).
2) Modbus point type or function code ---- selecting 01 (Coil Status) from the Modscan screen will
determine which values or parameters will be viewed. This is where the function code shows up
in the message frame.
3) Data sent---will consist of 2 sets of data ([00] [00]), ([00] [01]), the first two sets of numbers [00]
[00] are the address (hex), meaning (Mist tank level, Air heater, Air pre-heater, etc).
Remember: In the Modscan screen Address (hex) 0001 means 00 in the message frame,
0002—01, etc.
Only one output status value can be polled at anyone time using this format, to view a value, type
in the address in the Modscan screen address (hex) box.
See Coil Status addresses below.
The second set of numbers [00] [01] are the (length). In Coil Status, only one value can be polled
at a time, it is recommended to leave the length at 1 when working in Coil Status for this format.
4) Cyclical Redundancy Check--- CRC [fd] [ca], is a number assigned by the computer and
cannot be changed by the user.
Function code 01—in Modscan screen the address (hex) and the length cannot exceed 11
Or an error will occur in the receiving information from the IVT in the form of ([01] [81] [00] [40]
[50]), the [81] being the error code.
Coil Status Addresses;
There are only 6 addresses (HEX) available in coil status.
Address (HEX) Message frame address Description
01 = 00 --- Mist Tank oil Level Air Solenoid
02 = 01 --- Air Heater Element Control
03 = 02 --- Air Pre-heater Element Control
04 = 03 --- Demist Module Motor Starter
05 = 04 --- Overhead light