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C200H I/O Link Units
Section 6-1
Software Switches
The functions of the software switches are illustrated in the following diagram.
Bit 00: Read/Write Area User Settings
To enable user settings for the Read and Write Areas, turn ON software
switch bit 00. The result of the operation (normal completion or error comple-
tion) will be indicated in status bit 09 or bit 10 (first word + 5 words). Before
turning OFF software switch bit 00, check whether status bit 09 or bit 10 is
ON.
The sizes of the Read and Write Areas and the first words in the Read and
Write Areas that have been set in the Read/Write Setting Area will be stored
in the Master Unit’s non-volatile memory when bit 00 changes from OFF to
ON.
Note
1.
The Read/Write Area user settings software switch is effective only when
the PLC is in PROGRAM mode. If used in other operating modes, an error
will occur (error code C0 Hex). When a C0 error occurs, switch the PLC to
PROGRAM mode and try the operation again.
2.
Read/Write Area settings will not become effective by manipulating the
software switch alone. After changing the settings, either reset the Unit or
restart the PLC to enable the new settings.
3.
The Read/Write Area user settings are stored in the C200H I/O Link Unit’s
EEPROM memory. Once they have been set, they will not change when
the Unit is turned OFF or reset, and data from the set areas can be sent
and received from the next time the Unit is started.
4.
There is a limit to the number of times data can be written to EEPROM. Do
not exceed the EEPROM write life (1 million writes).
Bit 01: Read/Write Area Default Settings
To return the Read and Write Areas to the default settings, turn software
switch bit 01 ON.
Note
1.
The Read/Write Area default settings software switch is effective only
when the PLC is in PROGRAM mode. If used in other operating modes,
an error will occur (error code C0 Hex). When a C0 error occurs, switch the
PLC to PROGRAM mode and try the operation again.
2.
Read/Write Area default settings do not become effective by changing this
bit setting alone. The Read/Write Area default settings will not become ef-
fective by manipulating the software switch alone. After changing the set-
tings, either reset the Unit or restart the PLC to enable the new settings.
3.
The default settings for the Read and Write Areas are as follows:
Read Area: IR 50 (No. of words: 1)
Write Area: IR 350 (No. of words: 1)
Not used
Bit
Read/Write Area user settings
Read/Write Area default settings
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