Functions Shared By All Units; Backup Function - Omron GRT1 - 11-2007 Operation Manual

Functions Shared by all Units

Input Data Patterns and Sizes
Output Data Patterns and
Sizes
2-3 Functions Shared by all Units
2-3-1

Backup Function

Function Overview
Backup Procedure when
using a DeviceNet
Communications Unit
1,2,3...
Allocated data pattern
1. Input data + Communications
Unit Status Flags
2. Input data only
3. Communications Unit Status
Flags only
4. Slice I/O Unit Communica-
tions Participating/Withdrawn
Flags only
Allocated data pattern
Output data only
(1) Only one pattern of output data can be allocated.
(2) When allocating data, be sure that it does not exceed the maximum that
can be allocated (64 words).
The backup function records the parameter data of all Slice I/O Units con-
nected to the Communications Unit. The parameter data recorded in the
Communications Unit can be restored to the Slice I/O Units later with the
automatic restore function when a Slice I/O Unit has been replaced.
Power ON
Turn pin 4 ON, OFF, and
then ON again while the
power is ON and pin 1 is ON.
1. Verify that the power is ON, DIP switch pin 1 (REGS) is ON, and all of the
Slice I/O Units are participating in I/O communications.
Description
Used input data size + 1 word
Maximum Input Area: 65 words (with Communica-
tions Unit)
The total of the bit, word, and used areas. Calcu-
late following the previous example.
Maximum Input Area: 64 words (with Communica-
tions Unit)
1 word (with Communications Unit)
Participating Flags: 4 words
Withdrawn Flags: 4 words
Total: 8 words
Description
The total of the bit, word, and used areas. Calcu-
late following the previous example.
Maximum Input Area: 64 words (with Communica-
tions Unit)
Communications
#1
#2
Unit
Downloads all of the I/O Units' unit
information and parameter data.
Section 2-3
#3 #4
17