Hardware reference guide

Ethernet Modules
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35013379 02 October 2007
Peer Cop Based
I/O Scanner
The following table lists the characteristics of the Peer Cop based MODBUS I/O
Scanner, which is available only on the NOE77100.
Enhanced
Modbus I/O
Scanner
The following table lists the characteristics of the Enhanced based MODBUS I/O
Scanner, which is available on the NOE77100, NOE77101, and NOE77111.
Refer to the Quantum NOE 771 xx Ethernet Modules User Guide, 840USE11600 to
learn how to configure the MODBUS I/O Scanner.
MODBUS/TCP
Server
The following information describes the functionality of the MODBUS/TCP Server.
Introduction –
Client
All NOE771xx Quantum Ethernet TCP/IP modules provide the user with the
capability of transferring data to and from nodes on a TCP/IP network through the
use of a communication instruction. All PLCs that support networking
communication capabilities over Ethernet can use the MSTR Ladder Logic
instruction to read or write controller information or can also use IEC communication
blocks.
Parameter Value
Max. No. of Devices 64
Max. No. of Input Words 500
Max. No. of Output Words 500
HealthTimeout Value Global Setting (20 Msec to 2 Secs in 20 mSec increments)
Input TimeOutState Global Setting (Zero or Hold)
IP Address Derived from MODBUS Address (must be on NOE’s Subnet)
Remote Register Reference Not configurable - 400001 is used
Parameter Value
Max. No. of Devices 128: NOE77100, NOE77101 and NOE77111.
Max. No. of Input Words 4000
Max. No. of Output Words 4000
HealthTimeout Value Individual Setting (1 Msec to 2 Secs in 1 mSec increments)
Input TimeOutState Individually Settable
IP Address Individually Settable
Remote Register Reference Configurable
Min. Update Rate Settable
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com