ProSoft Technology ILX34-MBS485 - Manual (Page 31)

General Features & Specifications
ProSoft Technology, Inc. Page 31 of 34
February 18, 2015
4 General Features & Specifications

Add-On instruction creates UDTs, providing logical definitions for I/O,
status, and control data

Diagnostic data available in RSLogix 5000/Studio 5000 controller tags,
allowing decisions to be made based upon node health

Module configuration is backed up in the CompactLogix project (ACD file)

Serial port enable/disabled through ladder logic

Supports up to 1000 words of data

Supports up to 30 Modbus commands and up to 36 words per command

The Serial Port can be configured as a Modbus Master or Modbus Slave
device

Suitable for SCADA and field device interface applications
4.1 General Specifications – Modbus Master/Slave
Configuration Environment RSLogix 5000/Studio 5000
Max Modbus Command Size Modbus command sizes are limited to 8, 16, and 36
words per command, depending on AOI selected
Max Modbus Commands 30
Communication Parameters Baud Rate: 110 – 38.4K baud
Stop Bits: 1 or 2
Data Size: 7 or 8 bits
Parity: None, Even, Odd
Modbus Modes RTU mode (binary) with CRC-16
ASCII mode with LRC error checking
Node Address 1 to 247
Supported Modbus Function
Codes: 1: Read Coil Status
2: Read Input Status
3: Read Holding Registers
4: Read Input Registers
5: Force (Write) Single Coil
6: Preset (Write) Single Holding Register
8: Diagnostics (Slave Only. Responds to Sub-function 00
15: Force (Write) Multiple Coils
16: Preset (Write) Multiple Holding Registers