MTS Level Plus Interface Communications Module

3150-MTS

The 3150-MTS product allows the user to easily communicate with up to 64 MTS level plus gauges. The 3150-MTS (SLC) modules is a single slot solution for the A-B 1746 platforms (firmware solutions also available). These products allow MTS level plus digital gauges and level plus monitors to be interfaced directly to the Allen-Bradley environment.

Features

Simple to Use

All module setup and operating control is performed over the backplane through simple ladder logic and data table configuration. The only software necessary is a standard ladder-programming package.

Port Configuration

Configuring the two ports independently allows for optimum flexibility. Using both ports as RS-485 Masters to MTS gauges, or one port as a RS-485 Master to a set of MTS gauges and the other as a Modbus Slave connected via modem to a SCADA host is one example of this flexibility. Once configured through the processor data table the module will perform all protocol related functions on a stand-alone basis, returning level and temperature information to the processor.

Easy Hardware Installation

The connection between the 3150-MTS and the MTS gauges is a direct one and needs no RS-232 to RS-485 converter. In order to connect the 3150-MTS product to the MTS digital gauges, plug the module into the Allen-Bradley rack and connect the RS-485 line from the MTS gauges to the module's port.

Installation, Set Up and Operation

The ProSoft module installs in any slot in a local or a remote rack. The product's capabilities are enabled and controlled with simple ladder logic and data table initialization. The module operates in any one of the following configurations

Functional Specifications

• Continuous polling sequence of up to 64 gauges, each fully configurable for port, gauge address, level resolution, and temperature resolution
• RS-485 interface in module (No converters needed)
• Communication and instrument error codes returned to ladder logic on a per command/slave basis
• Supported commands
  16: output level 1 and 2 at 0.1 inch resolution
  17: output level 1 and 2 at 0.01 inch resolution
  18: output level 1 and 2 at 0.001 inch resolution
  31: ave & indiv RTD temp at 1 Deg F resolution
  32: ave & indiv RTD temp at 0.2 Deg F resolution
  33: ave & indiv RTD temp at 0.02 Deg F resolution

• RTU mode (binary) with CRC-16
• ASCII mode with LRC error checking
• Broadcast commands
• 125 word reads and writes
• Function codes supported
  1: read output status
  2: read input status
  3: read multiple data registers
  4: read input registers
  5: force single coil (write single bit)
  6: preset (write) single data register
  15: force multiple coils (write multiple bits)
  16: preset (write) multiple data register

• User configurable: address, parity, stop bits, baud rate
• Full radio, modem and multi-drop support
• Supports RS-232C, RS-422 and RS-485 interfaces
• Communication statistics returned to ladder logic, including error codes and communication counters

Hardware Specifications

• Backplane current load
• 3150 module for SLC
  - 5V @ 0.15 A
  - 24 V @ 0.040 A

• Operating temperature
  - From 0° C to 60° C (32° F to 140° F)

• Storage temperature
  -From -40° C to 85° C (-40° F to 185° F)

• Relative humidity
  - From 5% to 95% (without condensation)

• LED indicators
  - Module Status
  - Backplane transfer status
  - Serial port TX/RX activity LED
  - Serial port error LED status

• Application Serial ports
  - DB-25F - 3100 module
  - DB-9M - 3150 module
  - RS232/422/485 jumper selectable
  - RS422/485 screw termination included (two per module)
  - RS-232 hardware handshaking (RTS/CTS, DTR)
  - 500 V Optical isolation from backplane

Ordering Information

Distributors:
Place your order by email to orders@prosoft-technology.com:, fax to +1 661-716-5101.

Sales and Support: