User manual

Transferring Data with the I/O Scanner
33002479 06 07/2008 209
Configuration
Parameters
Set configuration parameters in the I/O Scanner configuration dialog. Enter data
in appropriate fields.
Parameter/Field Description
Entry # see item 4 in the
illustrations
A list of contiguous numbers from 1 -128. Each entry is a logical Ethernet
device on the network that may be scanned.
Slave IP Address and
IP Address
see item 5 in the
illustrations
The IP address of the scanned device.
Unit ID see item 6 in the
illustrations
The unit ID of the device on the Modbus/Modbus Plus network.
The device connects to the Ethernet through a bridge.
Health Timeout (ms) see item 7 in the
illustrations
The valid operating range for the Health Timeout parameter is 1 ...
65535 (representing 1 ms increments). After the configured time period
expires, the received data becomes invalid. If the parameter value is set
to 0, the health bit is not active and will not provide health information.
Repetitive rate (ms) see item 8 in the
illustrations
The rate at which data will be scanned, from 0...65535 in multiples of:
z If you are running Unity Pro V3.1 or lower with the following firmware
versions:
z NOE (v4.2 or lower): 16 ms
z CPU (V2.5 or lower): 10 ms
z If you are running Unity Pro V4.0 or higher with the following firmware
versions:
z NOE (V4.3 or higher): 5 - 200 ms
z CPU (V2.6 or higher): 5 - 200 ms
RD Master Object see item 9 in the
illustrations
The destination address in the controller for read operations.
RD Slave Index see item 10 in
the illustrations
The source address of the input/output module for the read period.
RD length see item 11 in
the illustrations
The number of words to be read.
Last value (Input) see item 12 in
the illustrations
The status of the inputs in the event of an error.
WR Master Object see item 13 in
the illustrations
The source address of the controller for write operations.
A write operation is carried out in words.
WR Slave Object see item 14 in
the illustrations
The destination address of the slave for write operations.
WR length see item 15 in
the illustrations
The number of words to be written.
Description see item 16 in
the illustrations
User-provided information.