Model LTSE6 ETHERNET SERIAL DATA INPUT, ANALOG OUTPUT TRANSMITTER Modbus or Custom ASCII Protocol OWNERS MANUAL LAUREL Electronics Inc. 3183-G Airway Ave, Costa Mesa, CA, 92626, USA Tel: (714) 434-6131 Fax: (714) 434-3766 • Website: www.laurels.
1. ORDERING GUIDE, SERIAL INPUT TRANSMITTER Configure a model number in this format: LTSE60 LTSE6… Transmitter with Ethernet serial data input, 4-20 mA, 0-20 mA or 0-10V isolated analog output, and dual 120 mA solid state relays. Power 0............................................................................................................. 85-264 Vac or 90-300 Vdc 1................................................................................................................. 12-30 Vac or 10-48 Vdc 2.
. INTRODUCTION, ETHERNET INPUT TRANSMITTER The LTSE6 Ethernet input to analog output transmitter (or Ethernet-to-analog converter) accepts Ethernet data using the Modbus or Custom ASCII protocol, and converts it to an isolated, scalable 4-20 mA, 0-20 mA or 0-10V analog output. It fits on a 35 mm DIN rail and is only 22.5 mm (0.89") thick. It is normally powered by AC (85-264 Vac), but is also available for low voltage AC or DC.
5. SAFETY CONSIDERATIONS Warning: Use of this transmitter in a manner other than specified may impair the protection of the device and subject the user to a hazard. Visually inspect the unit for signs of damage. If the unit is damaged, do not attempt to operate. Caution: • This unit may be powered with AC (mains) from 85-264 Vac or 90-300 Vdc with the high voltage power supply option, 12-30 Vac or 10-48 Vdc with the low voltage power supply option.
6. TRANSMITTER FIELD WIRING & JUMPER SETTINGS Jumpers at E2 are used to select voltage or current output. For 4-20 mA or 0-20 mA current, jumper E2 a + d. For 0-10V voltage, jumper E2 b + c. The factory default setting is current. Jumpers at E3 and E4 are used with counter transmitters to select an excitation output. This does not apply to serial input transmitters, which do not use a signal conditioner board.
7. PROGRAMMING YOUR TRANSMITTER OVERVIEW LTSE6 transmitters are easily programmed by connecting them to the same LAN as a PC or by connecting them directly to a PC with an Ethernet cable, and then running Instrument Setup Software on the PC. This MS Windows based software allows Node and Device discovery, uploading, editing, downloading and saving of setup data, execution of commands under computer control, listing, plotting and graphing of data, and computer prompted calibration.
Blocking, IS software will not be able to establish Ethernet communications. You will then need to restore Windows Firewall defaults by clicking on Control Panel => Windows Firewall => Advanced => Restore Defaults. The Node Discovery tab under Node Setup will open once you have passed the Windows Firewall. With a direct cable connection to the PC, only one Ethernet Node will be listed. With a LAN connection, multiple Ethernet Nodes may be discovered on the same LAN.
Click on the Device Discovery tab, and all Devices attached to your Node will be listed. With an LTSE6 transmitter, the transmitter will be the only Device listed. Highlight your Node, and you will be able to assign a descriptive name to it, such as Tank Farm. The default name is the Node’s unique MAC address. You can also use this tab to change your Node’s communication settings. Press Get to retrieve settings from the Node to the PC. Press Put to write settings from the PC to the Node.
Click on the Advanced Settings tab, and you will be given the opportunity to change the Node’s TCP and UDP Port settings. Press Get to retrieve settings from the Node to the PC. Press Put to write settings from the PC to the Node. If a browser is to access our Nodes on a remote LAN over the Internet, port forwarding must first be set up for the router that controls the remote LAN. The default port numbers programmed into our Nodes are UDP port 63179 for Node discovery and TCP port 502 for Modbus TCP.
SETTING UP BASIC OPERATION Under the Input+Display tab, select 000.00 Secs for Time Out. Ignore Signal Input, Gate Time, Filter, and Power-On Total, as these parameters do not apply to the serial input transmitter. Under Display, select Remote A, Remote S or Remote C. These items correspond to the Remote A, Remote S and Remote C operating modes, which are explained under the “Custom ASCII Protocol Transmitter Communications” section of this manual.
SETTING UP RELAY ALARMS OPERATION Under the Relay Alarms tab, enter the Setpoint 1 and 2 values as well as other parameters applicable to relay operation. Set Alarm Source to Item 3 as illustrated. Please see the “Dual Relay Operation” section of this manual for an explanation of the relay operating modes.
SETTING UP COMMUNICATIONS (REMOTE A & S MODES) The above screen will appear under the Communication tab if Remote A or Remote S has been selected as Display Type under the Input+Display tab. These two modes are not able to extract data from an ASCII string that contains multiple data values and non-numeric characters.
SETTING UP COMMUNICATIONS (REMOTE C MODE) The above screen will appear under the Communication tab if Remote C has been selected as Display Type under the Input+Display tab. This mode is able to extract data from an ASCII string that contains multiple data values and nonnumeric characters. Please see the F1 Help screen to the right.
SETTING UP THE ANALOG OUTPUT Under the Analog Out tab, set Source to Item 3. Under Range, select 0-20 mA Current, 0-10V Voltage, or 4-20 mA Current as your desired analog output. Type in your Lo Range Reading and Hi Range reading. These will create the two endpoint values of your analog output range.
8. DUAL RELAY OPERATION The optional dual solid state relays can operate in a basic alarm mode, in a hysteresis band mode, or in a deviation band mode, as explained below. Setpoint operation is referenced to the digital reading that is received as serial data. For example, temperature alarm or control would be referenced to a setpoint in °C or °F.
A deviation band alarm controls relay action symmetrically around a setpoint. The relay actuates when the reading falls within the deviation band, and de-actuates when the reading falls outside. A deviation value (such as 50 counts) is set up around both sides of the setpoint to create the deviation band. Passbands around a setpoint are often used for component testing.
9. MODBUS PROTOCOL TRANSMITTER COMMUNICATIONS 1. GENERAL The Modbus capability conforms to the Modbus over Serial Line Specification & Implementation guide, V1.0. Both the Modbus RTU and Modbus ASCII protocols are implemented: Modbus RTU Baud Rate........... 300, 600, 1200, 2400, 4800, 9600 or 19200 Data Format ....... 1 start bit, 8 data bits, 1 parity bit, 1 stop bit (11 bits total) Parity.................. None, Odd, Even (if None, then 2 Stop bits for 11 total) Address..............
4. COMMUNICATIONS SETUP Parameters selectable via Instrument Setup software, distributed on CD ROM: Serial Protocol ...............................Custom ASCII, Modbus RTU, Modbus ASCII Modbus ASCII Gap Timeout...........1 sec, 3 sec, 5 sec, 10 sec Baud Rate.......................................300, 600, 1200, 2400, 4800, 9600, 19200 Parity .............................................No parity, odd parity, even parity Device Address .............................0 to 247 5.
Modbus ASCII Format FC Action 05 05 10 10 Byte Number 1 2 3 4 5 6 Request Response : : MA MA FC FC RA RA RA RA WW WW LRC WW WW LRC Request Response : : MA MA FC FC RA RA RA RA NR NR - 19-- 7 NR NR 8 9 10 CR CR LF LF 11 NB DD* DD* LRC LRC CR LF 12 13 CR LF
10. CUSTOM ASCII PROTOCOL TRANSMITTER COMMUNICATIONS All setup parameters are entered into the transmitter via Instrument Setup (IS) software, including the serial communication format, digital address, operating mode, analog output scaling, and relay operating modes and setpoints. 1. SERIAL COMMUNICATION FORMAT The Custom ASCII serial communication format for both RS232 and RS485 is the following: Modes...............Full Duplex (separate transmit and receive lines) or Half Duplex (RS485 only). Baud Rate .
Remote A is an addressable input mode that uses the K command letter. It can convert remote data on one or more transmitters having the command address in a multi-point configuration or a single transmitter having the command address in a point-to-point configuration. Remote S is not addressable, and data representing a value to be retransmitted as an analog output is received via a point-to-point connection. The value is stored where it may be selected for Alarm comparisons.
. A = Decimal point (optional). = Alarm Character (optional). A = no alarms, B = alarm 1 active, C = alarm 2 active, D = alarms 1 & 2 active. = Carriage return character Remote S Data Format: SDDDDDD.A S D . A = = = = Sign of value (optional), space (or +) for positive, - for negative value. Data. Number of digits can be 1-6. Decimal point (optional). Alarm Character (optional). A = no alarms, B = alarm 1 active, C = alarm 2 active, D = alarms 1 & 2 active.
11. SPECIFICATIONS, ETHERNET INPUT TRANSMITTER Ethernet Data Input Serial protocols..................................................Modbus (TCP, RTU or ASCII) and Custom ASCII Serial connector.....................................................................................................................RJ45 Data rates ..........................................................................................................300 to 9600 baud Analog Output (standard) Output Levels.........................
12. WARRANTY Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a period of one year from the date of purchase. In the event of a defect during the warranty period, the unit should be returned, freight prepaid (and all duties and taxes) by the Buyer, to the authorized Laurel distributor where the unit was purchased. The distributor, at its option, will repair or replace the defective unit.
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