Modbus
SECTION 5 Modbus Communications Procedure
5-18
● Move to Setup Area 1
This command moves to “setup area 1” and can be accepted at both
setup areas 0 and 1. If the “initial setting/communications protect” is set
to “2,” an “operation error” will be generated, and the move to setup
area 1 will be prohibited.
When this move is carried out from setup area 0, the display indicates
the “input type” in the “initial setting level.” When this operation
command is executed in setup area 1, the display will not change.
● Move to Protect Level
This command moves to the “protect level” and can be accepted only in
setup area 0. When this command is issued in setup area 1, an
“operation error” will be generated, and the move to the protect level will
be prohibited.
◆ Moving to Protect Level in Manual Mode
When this operation command is issued in manual mode, an
“operation error” will be generated, and the move to the protect level
will be prohibited.
● Auto/Manual Switch
This operation command switches the mode to manual mode or
automatic mode, based on the related information setting. This
command can be accepted in setup area 0 only. An “operation error”
will be generated in the following instances:
• When the command is executed in “Setup Area 1”
• When auto/manual switching is disabled (not displayed)
When the Controller is switched to manual mode, the “manual manipu-
lated variable” will be displayed. When the Controller is switched from
manual mode to automatic mode, the operation level’s first parameter
will be displayed. When the Controller is switched to manual mode
while already in manual mode, the command will be completed
normally and the display will not change (the contents will not be
refreshed).
● Writing Auto/Manual Status in EEPROM
The write mode determines whether the auto/manual status is written
to EEPROM.
Write mode Description
Backup mode When the auto/manual mode is switched by commu-
nications, the auto/manual status is written to
EEPROM.
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