M2M
Machine to Machine
M2M is the abbreviation for “machine-to-machine” and enables automatic data transmission between two or more devices. This means that analog or digital input signals from a transmitter module can be automatically transmitted to a receiver module, where they are immediately output again.
Data exchange without a control PC
The modules communicate directly at device level and therefore do not require any additional user software. The one-off configuration of the transmitter module can be carried out very easily using our ICT-Tool. All settings remain permanently stored in the module memory, even in the event of a power failure. After a restart, the module automatically switches back to M2M operation.
M2M Ethernet or M2M CAN
With our DEDITEC products, we differentiate between M2M Ethernet and M2M CAN. We also refer to the latter as CAN-TX/RX mode. Both M2M methods are supported by most of our modules with Ethernet or CAN interface.
M2M-Ethernet
To be able to use M2M-Ethernet, the transmitter module must always be equipped with our M2M feature, whereas the receiver module can be any DEDITEC product with an Ethernet interface.
A maximum of 4 receiver modules (destinations) can currently be configured and up to 8 actions defined.
Definition of the receiver module
- Designation/name of the module
- Network configuration of the module
- Timeout time
- Encryption type and password
Definition of actions
These actions are used to define which analog or digital inputs are to be transmitted to a receiver module.
The following parameters can be defined in an action:
- Which data should be sent (digital or analog)
- To which receiver module (destination) should be sent
- The interval with which the operations are to be performed
- Start channel of the transmitter module
- Number of input channels to be transmitted
- Start channel of the receiver module
In the image on the right, DI data is sent every 100ms from channel 3(CH Start) to channel 8 ((CH Start) + (CH Count)) to channels 0-5 of the target module.
M2M-CAN
All DEDITEC products with a CAN interface are equipped with the M2M-CAN feature. The “Auto TX/RX mode” can be set in the ICT-Tool via the configuration menu. Depending on the product type, 8(4) TX and 8(4) RX modes can be defined.
"TX modes" submenu
The pictures on the right show an example configuration for a transmitter module (TX mode) and a corresponding receiver module (RX mode).
The TX mode on the transmitter module sends the logical states of inputs 1-64 to CAN ID 0x700 every 500ms.
The RX mode on the receiver module receives data packets on CAN ID 0x700 and outputs these values to outputs 1-64.
