Removal/Addition Of Units; Without A Programming; Online Replacement Without A Programming Device - Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual

Online Replacement of I/O Units, Special I/O Units, and CPU Bus Units
Note

11-4-5 Online Replacement without a Programming Device

Note
Note
448
1. Refer to the Programming Manual (W339), 5-2-6 Simple Backup Operation
for details on the simple backup function. If the Memory Card is inserted in
the new Unit, the data on the Memory Card will be automatically trans-
ferred to the Unit when the online replacement operation is completed.
2. To write parameters (such as the settings stored in the Special I/O Unit or
CPU Bus Unit) to the Unit in advance for replacement, it is necessary to
prepare separately a system consisting of a CS-series CPU Unit, CPU
Backplane, and Power Supply Unit. Mount the Unit to be used for replace-
ment to this Backplane and download the parameters to it from a Program-
ming Device.
When the Unit Removal without a Programming Device or Removal/Addition
of Units without a Programming Device function is enabled in the PLC Setup,
a Unit can be replaced without using the CX-Programmer or a Programming
Console.
Note The following table shows the CPU Units that support these functions.
Unit version
Unit version 1.1 Not supported (See note 1.)
or earlier
Unit version 1.2 Supported
Unit version 1.3 Supported (See note 3.)
1. If either of these functions is set in a CPU Unit with unit version 1.1, the
function will not operate. An I/O bus error will occur if a Unit is removed
without using a Programming Device.
2. If just the Removal/Addition of Units without a Programming Device func-
tion is set in a CPU Unit with unit version 1.2, it will not operate. An I/O bus
error will occur if a Unit is removed without using a Programming Device.
3. If both functions are set in a CPU Unit with unit version 1.3 operating in a
Duplex CPU Dual I/O Expansion System, the Removal/Addition of Units
without a Programming Device function will be enabled. If the system is a
a Duplex CPU Single I/O Expansion System, the Unit Removal without a
Programming Device will be enabled.
A Programming Device can be used for online replacement even if one of
these functions is enabled. Two or more Units can be removed at one time
with this setting.
Note When two or more Units are being replaced at one time, incorrect operation
may occur.
Previously, if a Unit was removed or failed, an I/O bus error will occur and the
PLC (CPU Unit) will stop operating, but this function causes the I/O bus error
to be treated as a non-fatal error so the PLC will continue operating.
1. In a Single CPU System or Duplex CPU Single I/O Expansion System, a
fatal error will occur if another major component (such as a Backplane, Ex-
pansion Rack Cable, Duplex Unit, or Long-distance Expansion I/O Rack)
is removed or fails. In a Duplex CPU Dual I/O Expansion System, a fatal
error will occur if a Backplane is removed or fails.
Unit Removal without a
Programming Device or
Section 11-4

Removal/Addition of Units

without a Programming Device
Not supported (See note 1.)
Not supported (See note 2.)
Supported (See note 3.)
(Duplex CPU, Dual I/O Expan-
sion Systems only)