E E ELEKTRONIK MOP301 Moisture in Oil Probe with Modbus RTU User Guide
- June 10, 2024
- E E ELEKTRONIK
Table of Contents
QUICK GUIDE
MOP301 – Moisture in Oil Probe with Modbus RTU
Find this document and further product information on our website at
www.epluse.com/mop301.
Electrical Connection
Important note:
The manufacturer cannot be held responsible for personal injuries or damage to
property as a result of incorrect handling, installation, wiring, power supply
and maintenance of the device.
M12 device plug front view
| Pin number | Function |
|---|---|
| 1 | Supply voltage 24 V DC class III (Europe) / class 2 (North America) |
| 2 | RS485 B (D-) |
| 3 | GND |
| 4 | RS485 A (D+) |
Modbus Setup
| Factory settings| Selectable values
---|---|---
Baudrate| 9 600| 9 600, 19 200, 38 400, 57 600, 115 200
Data bits| 8| 8
Parity| Even| None, even, odd
Stop bits| 1| 1, 2
Modbus address| 70| 1…247
The recommended settings for multiple devices in a Modbus RTU network are
9600, 8, Even, 1. The MOP301 represents 1 unit load in a Modbus network.
Device address, baud rate, parity and stop bits can be set via:
- PCS10, Product Configuration Software and the appropriate configuration cable HA011018. The PCS10 can be downloaded free of charge from www.epluse.com/pcs10.
- Modbus protocol in the register 60001 (0x00) and 60002 (0x01).
See Application Note Modbus AN0103 (available at www.epluse.com/mop301).
The serial number in ASCII format is located at read register address 30001-30008 (16 bits per address). The firmware version is located at register address 30009 (bit 15…8 = major release; bit 7…0 = minor release). The sensor name is located at register address 30010.
Communication settings (INTEGER 16 bit)
Parameter| Register number 1) [DEC]| Protocol Address 2) [HEX]
Write register: function code 0x06
Modbus address (Slave ID)| 1| 0x00
Modbus protocol settings 3)| 2| 0x01
Device information (INTEGER 16 bit)
Parameter| Register number 1) [DEC]| Protocol Address 2) [HEX]
Read register: function code 0x03 / 0x04
Serial number (as ASCII)| 1| 0x00
Firmware version| 9| 0x08
Sensor Name| 10| 0x09
- Register number starts from 1.
- Protocol address starts from 0.
- For Modbus protocol settings see Application Note Modbus AN0103 (available on www.epluse.com/mop301).
Modbus Register Map
FLOAT 32 bit:
Parameter| Unit| Register number 1) [Dec]| Register address
2) [HEX]
Read register: function code 0x03 / 0x04
Water activity aw| –| 1135| 0x46E
Water content x| ppm| 1141| 0x474
Temperature T| °C| 1003| 0x3EA
°F| 1005| 0x3EC
Oil parameter A| –| 224| 0xDF
Oil parameter B| –| 226| 0xE1
Write register: function code 0x10
Oil parameter A 3)| –| 101| 0x64
Oil parameter B 3)| –| 103| 0x66
- Register number starts from 1
- Register address starts from 0
- Examples: Writing Parameter A -2663.30005 decimal: E7 10 00 64 00 02 04 74 CD C5 26 E5 BA
Writing Parameters A and B -1663.30005 and 7.3705 decimal: E7 10 00 64 00 04 08 E9 9A C4 CF DB 23 40 EB AB 61
If two parameters are to be uploaded, it is recommended to write them with a single command.
Installation
Please note:
Continuous oil flow allows for short response time. In such installations,
place the sensor with the perforated filter at least partially within the oil.
Mounting example with a ball valve (not included in the scope of supply).
For further mounting options, please refer to the user manual on our website:
www.epluse.com/mop301
INFORMATION
E+E Elektronik Ges.m.b.H.
Langwiesen 7 • 4209 Engerwitzdorf • Austria
Tel: +43 7235 605-0 • Fax: +43 7235 605-8
[email protected] •
www.epluse.com
LG Linz Fn 165761 t • VAT No. ATU44043101
Place of Jurisdiction: 4020 Linz • DVR0962759
+43 7235 605 0 / [email protected]
QG_MOP301 // v1.0 // Modification rights reserved // 195060