LubriMist
®
Model JD
Oil Mist Generating System
Installation and Operating Manual
Page 85 of 152
The first two sets of numbers are the same as the previous.
1) The device ID (01)
2) The Function code (01).
3) Data Received---Has 2 sets of numbers a [01] and [02]. The [01] represents the number of bites of value
status being received (black field), meaning for every single digit added to the length in the Modscan screen
the value status received (black field) will increase by two, except in function codes 01 (Coil Status) and 02
(Input Status) in this format. Only one value can be polled at a time, so it is recommended to leave the length
at 1 when working in Coil Status 01 in this format.
The [02], is the value status of the address being polled.
The status of the address being polled doesn’t necessarily mean it is going to come back in the form of a 1
or 0, on or off. It can also come back in the form of Odd # or Even #, but break down those numbers in
binary form and they will be 1 or 0. From the JD, here’s how it breaks down.
Even # or O = N.O. normally open --- OFF
Odd # or 1 = N.C. normally closed --- ON
4) Cyclical Redundancy Check--- CRC, is a number assigned by the computer and cannot be changed by
the user.
Input Status,
Function Code 02, this data will come from the Digital Inputs on the JD.
For a description of the digital inputs refer to (
Input Status Addresses
) below.
Message frame being sent
[01] [02] [00] [00] [00] [01] [b9] [ca]
1) Device I.D. in
Modscan screen has to
be the same as the JD
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]
[02]
([00] [00]) ([00][01])
[b9] [ca]
The first two sets of numbers are the same as the previous.
1) Is the device ID 01.
2) The Function code 02.
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 (Loop back of digital outputs, Mist Tank Oil Level Sensor
Switch, etc). To poll the value output status, type in the address in the Modscan screen address
(hex) box.
See Input Status addresses below.
Remember:
In the Modscan screen Address (hex) 0001 means 00 in the message frame, 0002—01, etc.
The second set of numbers [00] [01] are the (length). In Input Status, only one value can be polled
at a time, it is recommended to leave the length at 1 when working in Input Status for this format.
4) Cyclical Redundancy Check--- CRC, is a number assigned by the computer and cannot be
changed by the user.
Function code 02—in Modscan screen the address in HEX and the length cannot exceed 11
Or an error will occur in the receiving information in the form of ([01] [82] [00] [40] [a0]), the [82] being the
error code.
Input Status Addresses;