CS1D-II102D Omron, CS1D-II102D Datasheet - Page 152

• Manufacturer Part Number: CS1D-II102D
• Description: CS1D Dual IO Interface Unit
• Manufacturer: Omron

Specifications of CS1D-II102D

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

Duplex Power Supply
Units
Duplex
Communications
Units
3-1-2
Duplex CPU Units
Errors Causing Operation to Switch to the Standby CPU Unit
Note CS1D Power Supply Units must be used.
Note Duplex Ethernet Units are supported only by CPU Unit Ver. 1.1 or later.
Power Supply Units can be used in a duplex configuration.
The mode does not change between Duplex Mode and Simplex Mode as a
result of Power Supply Unit errors.
Optical Controller Link Units or Ethernet Units can be used in a duplex config-
uration.
The mode does not change between Duplex Mode and Simplex Mode as a
result of Communications Unit errors.
If any of the “operation switching” errors listed below occur in the active CS1D
CPU Unit, causing it to stop operating, control is automatically switched to the
standby CPU Unit. At that time, the mode is also switched to Simplex Mode.
If, however, an operation switching error or a fatal error occurs simultaneously
at the active and standby CPU Units, the system will stop operating.
Operation switching errors
User program execu-
tion
I/O refreshing
Duplex bus check
Peripheral servicing
Duplex refreshing
• Watchdog timer error (CPU error)
• Memory error: Memory Error Flag (A40115) turns ON. (Previously this
• Program error: Program Error Flag (A40109) turns ON. (Previously this
• Cycle time overrun: Cycle Time Overrun Flag (A40108) turns ON.
was a fatal error.)
was a fatal error.)
Processing
The same user program is executed.
Synchronized instructions (see note) are executed simulta-
neously for both the active and standby CPU Units.
Note These instructions include IORF(097) (I/O REFRESH),
Inputs and outputs are refreshed only by the active CPU Unit.
When inputs are refreshed, the input data is transferred to the
standby CPU Unit.
A bus check is executed between the active CPU Unit, Duplex
Unit, and standby CPU Unit.
Writing for file accessing and FINS command execution is pro-
cessed only for the active CPU Unit.
Reading for file accessing and FINS command execution is
processed for both the active and standby CPU Units.
With RS-232C port servicing, only reading can be processed
at the standby CPU Unit (i.e., when enabled in the PLC
Setup).
Peripheral servicing other than the above is executed only at
the active CPU Unit.
The Auxiliary Area status and error content at the active CPU
Unit are copied to the standby CPU Unit.
DLINK(226) (CPU BUS UNIT I/O REFRESH),
IORD(222) (INTELLIGENT I/O READ), IOWR(223)
(INTELLIGENT I/O WRITE), PID(190) (PID),
RXD(235) (RECEIVE), FREAD(700) (READ DATA
FILE), and FWRIT(701) (WRITE DATA FILE).
Duplex-related processing
Section 3-1
117