6
Modbus Interface Manual
LP Series
3. Introduction
3.1 Purpose and use of this manual
The content of this technical documentation and of its various
annexes is intended to provide information on mounting, installation
and commissioning by qualified service personnel according to
IEC 60079-14 and/or MTS trained service technicians and local
regulations.
3.2 Used symbols and warnings
Warnings are intended for your personal safety and for avoidance
of damage to the described product or connected devices. In this
documentation, safety information and warnings to avoid dangers that
might affect the life and health of personnel or cause material damage
are highlighted by the preceding pictogram, which is defined below.
4. Safety instructions
4.1 Intended use
The purpose of this document is to provide detailed information on
the protocol interface. All safety related information is in the product
specific operation manual. Consult the operation manual before
connecting to the level transmitter.
5. Quick start-up guide
5.1 Before you begin
Note:
You must use a RS-485 converter with “Send Data Control” and the
M-Series Set-up Software to ensure proper operation.
Example:
RS-485 to USB, MTS 380114
5.2 Quick start-up procedure
1. C24 Vdc to terminals.
2. Connect data lines to terminals.
3. Connect the PC (or other device) to data lines.
(If you are using a PC, use a RS-485 to USB converter. See
Note above for more information.)
4. Turn on power to the transmitter.
5. Start the LP Dashboard. Select Com Port and Address. Factory
default address is ‘247 ’ for Modbus.
Before starting the operation of the equipment read this documentation
thoroughly and follow the safety information.
Symbol
Meaning
NOTICE
This symbol is used to point to situations
that may lead to material damage and/or personal
injury.
6. Change the address to one that is suitable for the installation
network.
7.
Verify proper operation of product, interface floats, and/or
temperature.
8. Turn off power to the transmitter.
9. Remove data lines.
10. Install the transmitter into the vessel (see Operation Manual).
11. Reconnect power and data lines.
12. Calibrate current tank level using setup software (optional).
13. Verify communications with the host system.
6. Display Menu
All LP-Series liquid level transmitters are shipped with a Stylus (MTS
Part # 404108) to be used for manipulating the display. For single and
dual cavity housings, the Stylus is designed to allow for programming
of the unit without removing the housing. When using the Stylus make
sure to align the Stylus with the shape outline around the buttons in
the same orientation. Failure to correctly align the Stylus can cause the
display to not function properly.
Note:
Do not use any device other than the MTS Stylus to operate the display
on the LP Series.
Note:
Improper use of the Stylus can cause the display to not function
properly.
6.1 Operation Modes
The LP Series level transmitter runs in one of the following modes of
operation. You can use these modes to calibrate and set up various
operating parameters.
6.1.1 Run Mode
Run mode is the primary mode of operation. This mode will perform
measurements, display data, and respond to Modbus commands.
6.1.2 Program Mode
Program mode is the primary mode for commissioning and trouble-
shooting the level transmitter. The full menu and available functions are
shown in section 6.3 Menu Structure. To enter program mode use the
Stylus and press the Enter Key as shown in section 6.2 Display Diagram.
Program Mode is protected by a password to keep unwarranted chan-
ges from occurring. The factory default password is 27513. When in
program mode, remote communications are not functional. An automa-
tic timeout feature is provided so that the transmitter does not remain
inadvertently in program mode. The timeout is set for 1 minute before
prompted for additional time. Total timeout is 2 minutes.
Default communication parameters
Modbus: 4800 BAUD 8, N, 1 8 Data bits, No Parity, 1 Stop bit
