Published on 1 October, 2012
Driven by innovation Keyscan Inc., is pleased to introduce the CIM (Communication Interlink Module). It is a direct result of Keyscan’s engineering innovation and dedication that has allowed us to continue to offer high quality access control solutions for over 25 years.
The Keyscan CIM is a new communication control module designed to use a CAN Bus communication network to provide optimised server to Access Control Unit (ACU) communication as well as give users an all new ACU to ACU network permitting inter-panel communication for global functions including anti-passback, global input/output and global time zones.
“The Keyscan CIM is just another example of Keyscan Access Control Systems’ commitment to innovation and quality. It is the new communication standard for Keyscan and opens up a host of new features as well as enhancements especially for global communication,” says Steve Dentinger, Keyscan Director of Sales and Marketing.
The Keyscan CIM utilises a Controller Area Network (CAN) Bus infrastructure to establish a communication network among multiple ACUs as well ACUs and a host server. The capabilities of CAN already surpass those of other serial communication technologies. But, Keyscan didn’t stop there.
Keyscan CIM combines the robust CAN Bus protocol with a hardware interface that is superior to the standard commercial-grade CAN Bus. It is a fully isolated CAN Bus using high speed digital isolation devices that separates ground reference of the CIM and ACU from the ground reference of the CAN Bus transceiver. This reduces problems found when there is a difference in ground potential between units. This is often observed in multi-building installations or in poor grounding conditions.
This isolation further protects the CIM, and connected ACU, from lightning strikes or electrical surges reducing the occurrence of module failure. It also ensures a single unpowered CIM cannot adversely affect the data of the CAN Bus.
A common-mode filtering at the CAN Bus transceiver reduces ground referenced noise from the CAN Bus which improves signal quality reducing bit errors and bus faults. DC biased termination resistors provide the necessary termination of the CAN Bus cabling but also ensure the full potential of the CAN Bus signal is utilised. In addition to providing server to ACU and global inter-panel communication, the Keyscan CIM also includes impressive new features including ground loop protection, enhanced device-based diagnostic capabilities, improved speed and unprecedented reliability.
“The Keyscan CIM offers new features, enhancements and possibilities, especially when it comes to global communications,” Dentinger continued.
“It changes the dynamics of Keyscan ACU to ACU and ACU to server communication and forms a new foundation for global communication. And, once again, demonstrates how Keyscan offers access control systems without limits; and innovation without boundaries,”