Autotech smart encoder with Ethernet option provides a 12 bit absolute encoder position over EtherNet/IP, Modbus TCP/IP. In both cases the encoder acts as a server (or slave). In Modbus the position information is available in holding register 400001. In case of EtherNet/IP, the encoder is configured as a generic Ethernet module with 2 in, 2 outputwords, and the position is read from input word #1.

A free running counter is provided, which is updated frequently. By reading the counter, and comparing the previousand new values, user can ascertain the working of the encoder.

• Servo or Face mount
• 15 lb. Axial/Radial shaft load
• 1/4" stainless steel shaft
• 2 Single row bearings with shaft seal
• Up to 720 count/rev resolution
• NEMA 4/4X Hosdown construction
• 10-30VDC Power ET7272 Line drive outputs short circuit proof
• NEMA 4 cable fitting

Specifications:

Input Power

• Voltage: 18-30 VDC
• Current: 250 mA @ 24 VDC exclusive of load

Power-On Settling Time

• Up to 100mSec

Position Output

• Over Ethernet

Ethernet Speed

• 10/100Mbit

Output Format and Resolution

• Field programmable from:
• Gray Code: Programmable up to 4096
• Binary: Programmable up to 4096
• BCD: Programmable up to 1999
• refer manual for bit arrangement in BCD format

Protocols

• Field selectable from:
  • EtherNet/IP
  • Modbus TCP/IP

Connector

• 8 Pin round for power input and Ethernet

User Interface

• 4 Digit LED for position/rpm/configuration
• 2 push buttons

EtherNet/IP Connection Parameters

• Generic Ethernet I/O module, with 2 Input words, 2 Output words, and 1 config byte;
• Input Assembly instance: 100
• Output Assembly instance: 150
• Input word #1: Position information
• Input word #2: A free running heartbeat counter
• Output words and config byte are not used currently

Modbus TCP/IP Connection

• Implementation: Modbus TCP/IP server (slave)
• Functions supported: 03 (read multiple holding registers)
• Addresses Supported: Two holding registers
  • 400001: Position information
  • 400002: A free running heartbeat counter