Omron EJ1 - 07-2008, Operation Manual

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72
Expansion Remote I/O Section 4-4
Note If memory is allocated to the parameter for a unit number that is not
registered in the configuration, no processing will be performed,
and writing will completed normally.
Note Always turn OFF the OUT Enable Bit before attempting to write parameters
using expansion remote I/O. If writing is attempted while the bit is ON, writing
may be performed while the allocation number or write values are being set,
and unintended values may be written.
Programming
Example for Writing
Parameters
The program uses CIO 3200 to CIO 3263 as the OUT Area and CIO 3300 to
CIO 3363 as the IN Area for an OMRON CS/CJ-series DeviceNet Unit.
Operation • The set point of a TC2 Unit (unit number 0, ch1) is written.
• The OUT Enable Bit (bit 320000) to which CIO 3200 is allocated is turned
OFF.
• When bit 00 of the Output Completed Flags, to which CIO 3300 is allo-
cated, is reset, the Write Parameter, to which CIO 3202 is allocated, is set
to allocation number 27 (001B hex) to specify the set point, and the unit
number and channel parameter, to which CIO 3203 is allocated, is set to
100
°
C (0064 hex).
• The OUT Enable Bit is turned ON (CIO 320000).
• Writing is performed. When writing has been completed normally, the
word that contains the OUT Enable Bit will be 0001 hex (bit 00 ON, bit 15
OFF).
PLC Memory OUT Area
Output Completed Flags
Read Parameter Monitor
---
Unit 0, ch1 parameter
Unit 0, ch2 parameter
Unit 1, ch1 parameter
Unit 1, ch2 parameter:
n+0
n+1
n+2
n+3
n+4
n+5
n+6
Address
m+0
m+1
m+2
m+3
m+4
m+5
m+6
OUT Enable Bit
Read Parameter
Write Parameter
Unit 0, ch1 parameter
Unit 0, ch2 parameter
Unit 1, ch1 parameter
Unit 1, ch2 parameter
Address
PLC Memory IN Area
Example:
2. Set to 0000 hex.
6. Set to 0001 hex.
4. Set 0064 hex
(value written as the
set point).
3. Set 001B hex (set point).
1. Turn OFF.
5. Turn ON.