FEC AFC1500 - Manual (Page 73)

AFC1500 Multi-2 Unit Hardware Manual (Rev2.1)
PAGE 5 - 29
Chapter 5: Control Interfaces
Daughter board
5.7 Modbus Plus
®
Interface
Modbus Plus is a local area network system designed for industrial control and monitoring applications
developed by Modicon Inc. The network enables programmable controllers, host computers and other
devices to communicate throughout the plant. Modbus Plus is normally used in industrial automation to
transfer fast data (up to 1Mbit/sec.) for motor controllers, MMI, I/O units and other industrial equipment.
This interface board has up to 16 words of assigned input data and 16 words of assigned output data
(256 inputs / 256 outputs). FEC I/O is assigned to the I/O points in these data areas (some I/O will be
designated spare). FEC Inputs match the discrete input layout. FEC Output locations are programmed
using the AFC User Console Software.
FEC integrates the Modbus Plus board manufactured by HMS Fieldbus Systems AB into the Multi-2
Unit’s modular I/O board. For further technical information on the Modbus Plus interface go to the HMS
website. (
www.hms.se )
Item Description
1 Application Connector
2 Modbus Plus Connector
3 Node ID Switch
4 Source ID Switch
5 Status LEDs (4)
6 Watchdog LED
Red - (flashing @ 2Hz) - ASIC and FLASH ROM check fault.
Green (flashing @ 2Hz) - module not initialized.
Green (flashing @ 1Hz) - module initialized and running OK.
Red (flashing @ 1Hz) - RAM check fault.
Red (flashing @ 4Hz) - DPRAM check fault.
2
1
3
4
5
6
- Represents switch position