Possibilities for Networking

The DeviceNet™ Communication Module is connected to the bus using the 5-pin COMBICON socket. For EMC suppression and protection against dangerous contact voltages, the shield of the bus line has to be connected to protective earth outside the housing.

Single Master System

The single master system is the simplest version of a DeviceNet™ network. It consists of a DeviceNet™ master (Client) and up to 63 slaves (Server). The line ends of the busses have to be terminated using bus termination resistors.

The DeviceNet™ master is able to:

• automatically determine the structure of the system, i.e. the description and configuration possibilities of all subscribers.
• detect double bus addresses in the network.
• parameterize the slaves (e.g. communication connections, time supervision, bus traffic).
• configure slaves (e.g. type, number and channel operating mode).
• read input data of the slaves.
• write output data of the slaves.
• read diagnostic data of the slaves.
• send control commands to the slaves (via bit strobe, e.g. freeze input signals).
• read, write and reset slave objects even if the slaves are in running mode.

Example of a single master system

1	CM575 as DeviceNet™ master
2	DeviceNet™ power supply
3	Slave 1, e.g. valve island
4	Slave 63, e.g. power converter

Multi Master System

A DeviceNet™ network that contains several masters is called a multi master system. Up to 64 subscribers (master and slaves) can be operated in this type of network. In a multi master system, master-slave communication is possible as well as the data exchange between masters.

Masters are able to:

• automatically determine the structure of the system, i.e. the description and configuration possibilities of all subscribers.
• parameterize the slaves (e.g. communication connections, time supervision, bus traffic).
• configure slaves (e.g. type, number and channel operating mode).
• read input data of the slaves.
• write output data of the slaves.
• read diagnostic data of the slaves.
• send control commands to the slaves (via bit strobe, e.g. freeze input signals).
• read, write and reset slave objects even if the slaves are in running mode.

Example of a multi master system

1	CM575 as DeviceNet™ master
2	DeviceNet™ power supply
3	other DeviceNet™ master
4	Slave 2, e.g. valve island
5	Slave 63, e.g. power converter