CS1D-BC042D Omron, CS1D-BC042D Datasheet - Page 486

• Manufacturer Part Number: CS1D-BC042D
• Description: CS1D Dual CPU Exp
• Manufacturer: Omron

Specifications of CS1D-BC042D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Online Replacement of I/O Units, Special I/O Units, and CPU Bus Units
Maintenance
Start Bit
(A80015)
Online
Replacement
Completed Bit
(A80215)
Turned ON by user
before removing Units.
5 Units removed.
Units to replace:
5 Units
Note If you want to detect errors in other Units before all of the Units have been
Note Do not turn ON the Online Replacement Completed Bit (A80215) continu-
The CPU Unit will not detect errors occurring in Units,
including Units not being replaced. (See note.)
The Maintenance Start Bit will be turned OFF automatically when the Online
Replacement Completed Bit (A80215) is turned ON to restart data exchange
between the replacement Unit and the CPU Unit.
When two or more Units have been removed and replacement Units are being
added to the system in order, the Maintenance Start Bit will be turned OFF
when data exchange is restarted with the last Unit that was replaced.
Example
replaced online, turn OFF the Maintenance Start Bit.
Online Replacement Completed Bit (A80215)
When the Unit Removal without a Programming Device function is selected
and a Unit has been installed during operation without a Programming Device,
the Online Replacement Completed Bit (A80215) must be turned ON in order
to restart the data exchange between the replaced Unit and the CPU Unit.
When turning this bit ON externally, allocating the bit to an external switch or
turn the bit ON from a PT. (The bit can also be turned ON from the CX-Pro-
grammer or a Programming Console.)
ously from the ladder program or other source. If the Unit is mounted while the
Online Replacement Completed Bit is ON, the PLC (CPU Unit) may stop
operating.
If two or more Units have been removed at one time, data exchange will
restart only with the newly mounted Units when the Online Replacement
Completed Bit is turned ON. Therefore, the Online Replacement Completed
Bit must be turned ON each time that Units are mounted.
Mount 2 Units
and turn A80215
from OFF to ON.
Restart data
exchange with
2 Units.
Units to replace:
3 Units
Mount 2 more Units
and turn A80215 from
OFF to ON.
Restart data
exchange with
2 more Units.
Units to replace:
1 Unit
Mount 1 more Unit
and turn A80215
from OFF to ON.
Replacement
complete
Restart data
exchange with
1 more Unit.
The system automatically
turns the bit OFF when all
of the Units have been
replaced and data
exchange has restarted
with all of those Units.
Section 11-4
451