MTS Level Plus Interface Communications Module

3100-MTS

The 3100-MTS product allows the user to easily communicate with up to 64 MTS Level Plus gauges. The 3100-MTS (PLC) Module is a single slot solution for the A-B 1771 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 3100-MTS and the MTS gauges is a direct one and needs no RS-232 to RS-485 converter. In order to connect the 3100-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
• Support for the storage and transfer of up to 4000 registers to/from the PLC
• 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

• The following Modbus features have been implemented:

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

Hardware Specifications

• Backplane current load
• 3100 module for PLC
  - 0.65 A

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

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

• Relative humidity
  - 5-95% (w/o 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
  - RS232/422/485 jumper selectable
  - RS422/485 screw termination included (two per module)
  - RS-232 hardware handshaking (RTS/CTS, DTR)
  - 500V 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: