User manual

Ethernet Communication Services
88
33002479 06 07/2008
I/O Scanner
Parameters
Functionality of the I/O Scanner.
The I/O Scanner Concepts topic (see I/O Scanner Concepts, p. 200) explains how
to configure the I/O scanner.
Performance Performance data details are provided at I/O Scanner Response Times topic (see I/
O Scanner Response Times: Remote Input to Remote Output, p. 210).
Parameter Value
Max. No. of Devices 64: 140 NOE 771 00 (Version 2.2 or earlier)
128: 140 NOE 771 00 (Version 3.0 or later), 140 NOE 771 01,
and 140 NOE 771 11 only
128: HE CPU 651 x0
Max. No. of Input Words 4000
Max. No. of Output Words 4000
Health Timeout Value User configured: 1...65535 ms in 1 ms increments
Last Value (Input) User configured (zero or Hold)
IP Address User configured
IP address of scanned device (Slave IP)
Local and Remote Register
Reference
User configured
Repetitive Rate User configured: 0...65535 in multiples of:
z 16 ms, for 140 NOE 771 x1
z 10 ms, for 140 CPU 651 x0
Unit ID User configured
Configure ID only if using a bridge
Operation through a bridge Modbus bridge: Supported
Modbus Plus bridge: Supported