Skip to content 
Easily create redundant systems. Improve development productivity with FB, ST, and SFC.
The advanced CS1D Duplex System supports the IEC 61131-3 programming languages, ST and SFC. You can flexibly combine different languages. FBs allow you to reuse and share programs, which will help improve development productivity. In addition, the high-capacity CPU unit provides sufficient program capacity (400K steps) and data memory (832K words) and offers a flexible environment that supports structured and modular programming.
Flexible configuration to suit your system requirements
1. Choose the level of redundancy needed
Omron offers a diverse range of duplex system configurations to match your system requirements. In addition to dual CPU units and power supply units, you can use dual communications units (Controller Link or Ethernet) and expansion cables.
2. Supports a variety of network configurations
Redundant communications can be created via Ethernet and Controller Link which is widely used in FA applications.
A variety of networks are available at the I/O level, including open networks DeviceNet and CompoNet with a proven track record in the CS1 Series.
Easy installation and operation of reliable systems
1. Easy duplexing of CPU units
All programs and data in the active CPU unit are automatically transferred to the standby CPU unit to synchronize them between CPU units.
This eliminates the need to select synchronized data or transfer individually. When an error occurs in the active CPU unit, the standby CPU unit takes over control immediately (within one cycle time).
2. Easy duplexing of communications units
The CPU unit automatically selects the normally functioning communications unit. There is no need for complex programming to switch when an error occurs or special data link area for duplexing.
3. Easy duplexing of power supply units
A duplex power supply system can be configured with two power supply units connected to a CPU rack, expansion rack, or long-distance expansion rack, which prevents the system from going down due to a power supply unit error. A power supply unit that malfunctions can be identified by flags in the AR Area of the CPU unit.
4. Replace units during power supply
The CPU unit, power supply unit, duplex unit, basic I/O unit, and special I/O unit can be replaced during power supply or operation. In addition, cable disconnections are monitored, so failures can be located easily.
5. Automatic recovery to duplex operation
After the standby CPU unit becomes active due to accidental errors caused by noise or other factors, the stopped CPU unit can be restarted without the need for manipulation by operators and automatically returned to duplex operation. The period during which only a single CPU unit operates is shortened, maintaining duplex operation to prepare for errors. (Setting in PLC Setup is required. When hardware breaks down, the CPU unit is not returned to duplex operation after restart. The unit needs to be replaced.)
Basic System:
Configuration Units:
