CS1G-CPU44H Datasheet, PDF (22/27 Pages) Omron Electronics LLC – CS1 CPUs Mean Ultimate Performance

CPU Overview
CS1D Duplex CPU Specifications
System Configuration and Basic Functions (continued)
Item
Duplex CS1D Power Supply
Units
Specification
Operation with two
CS1D Power Supply
Units mounted
Power is supplied to the Backplane simultaneously by two CS1D Power Supply
Units. (The load for each CS1D Power Supply Unit is approximately one half.)
This function is supported in either a Duplex System (in either Duplex or Simplex
Mode) or in a Simplex System.
Operation when one If one CS1D Power Supply Unit breaks down (i.e., if the power supply voltage
CS1D Power Supply drops), operation is continued using only the other one.
Unit breaks down
Duplex Communications
When two Optical-ring Controller Link Units for duplex communications (H-PCF cable: CS1W-CLK12-V1;
GI cable: CS1W-CLK52-V1) are mounted using the same node address and unit number, and a special
cable is used to connect them, one of the Modules will continue communications even if the other one
breaks down.
Online Module replacement
Using the Programming Console, it is possible to mount or remove CS1-Series Basic I/O Modules,
CS1-Series Special I/O Modules, and CS1-Series CPU Bus Units while the power is ON and the CPU is
operating in any mode (PROGRAM, MONITOR, or RUN).This function is supported in either a Duplex
System (in either Duplex or Simplex Mode) or in a Simplex System.
J Specifications with Application Restrictions
Item
Programming Device
operating restrictions
Applications constantly
connected to RS-232C port
Restrictions on Memory
Card functions
Specification
CX-Programmer
PLC model: Select: “CS1H-H.” Cable connection: Connect to peripheral port or
RS-232C port of active CPU. If a CX-Programmer is connected to the standby
CPU, write processing from the CX-Programmer cannot be executed.
Programming
Console
Cable connection: Connect to peripheral port of active CPU. If a Programming
Console is connected to the standby CPU write processing from the
Programming Console cannot be executed.
When a constant monitoring system, such as an Operator Interface or personal computer application, is
connected to the CPUs RS-232C port, an RS-232C/RS-422 Adapter can be used to connect to both the
active and standby CS1D CPUs. Set the standby CPUs RS-232C port setting in the PLC Setup so that it
cannot be used independently.‘
When writing to a Memory Card, the same data is written to not only the Memory Card mounted in the
active CPU, but also to the one mounted in the standby CPU.
Restrictions on types of
interrupts
Restrictions on I/O refresh
methods
Note: 1.
2.
3.
In the PLC Setup, duplex operation must be enabled for Memory Cards.
No processing is executed during duplex initialization to match the data on the Memory Cards
mounted in the active and standby CPUs even if the data is not the same. Therefore, before
enabling duplex operation for Memory Cards, make sure that the contents are the same for
both of the Memory Cards.
When EM File Memory is set for duplex operation, processing is executed to match the con-
tents of EM File Memory in both CPUs. It is not necessary to enable duplex operation for
Memory Cards in the PLC Setup.
The CS1D CPUs do not support any interrupt functions.
Power OFF interrupt tasks, scheduled interrupt tasks, I/O interrupt tasks, and external interrupt tasks
cannot be used in either a Duplex or Simplex System. Interrupt control instructions (MSKS, MSKR, and
CLI) are executed as NOP.
No restrictions.
Cyclic refreshing
Refreshing by I/O refresh instruction (IORF(097))
Refreshing by CPU Bus Unit immediate refresh instruction (DLINK(226))
Cannot be used
(disabled).
Immediate refresh option “!”
Immediate refresh option “!” will not be used, even if it was specified
Restrictions of CPU
processing modes
Restrictions on background
execution
Only Normal Mode can be used.
Parallel Processing Mode and Peripheral Servicing Priority Mode cannot be used
Background execution of text string instructions, table data instructions, and data shift instructions
cannot be used.
(This table continues on the next page.)
C--32 Programmable Controller CS1