IFM VMB301 handleiding
Handleiding
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VMB301 Condition monitoring sensor with CANopen interface
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Value Bit rate
7 20 kBits/s
If a master is used in the CANopen network for central storage of parameters, the changed values for
node ID (0x20F0 and 0x20F1) and bit rate (0x20F2 and 0x20F3) must be additionally entered in the
master.
Otherwise the values will be reset during each start of the CANopen network.
Change the Node ID and bit rate via LSS
With the help of the Layer Setting Service (LSS), an LSS consumer can change the node ID and bit
rate of the device (LSS producer) via the CAN bus. The LSS consumer puts all LSS producers into
configuration mode. Each LSS producer is uniquely identifiable via the device data (vendor ID, product
code, revision number and serial number).
To change the bit rate, the LSS consumer transmits the new bit rate in configuration mode using the
[Configure Timing Bit] service. The LSS producer responds to the LSS consumer as to whether the
new bit rate is supported. The LSS consumer then uses the [Activate Bit Timing] service to send the
[Switch delay] time after which the new bit rate is to be activated. After activation, the LSS consumer
switches the LSS producer back to operating mode.
To change the node ID, the LSS consumer transmits the new node ID in configuration mode. The LSS
producer responds to the LSS consumer to indicate whether the new node ID is valid. After changing
the node ID, the LSS consumer switches the LSS producer back to operation mode.
The new bitrate and node ID become active after a software reset of the LSS Producer.
8.6 Communication mechanism of the device
CANopen defines data types with a maximum size of 64 bits (8 bytes).
The TPDO can be checked at any time by transmitting a remote transmission request telegram (RTR).
The CANopen service [SYNC] is used (see CiA 301, chapter 7.2.5). For the synchronised
transmission CANopen provides the SYNC object at which the TPDOs are transmitted after every
"nth" reception of a SYNC telegram.
Alternatively, the TPDOs can be sent event-controlled via the event timer.
A total of 5 TPDOs and 1 RPDO are available; the 4 standard TPDOs are automatically activated on
delivery.
If the CAN network is configured accordingly, the process data object can be activated for the
unbalance analysis. This requires a speed input; the speed can be transmitted as an RPDO or
configured as an SDO.
8.6.1 Transmit process data objects (TPDO)
Scaling of the process values
The sensor can transmit the process values as INT16 or FLOAT32.
In addition, the desired unit of the process value to be transmitted can be configured (object directory
0x6131 AI_Physical_unit_PV).
To obtain the actual process values, the values transmitted in INT16 format must be scaled in the
TPDOs. The decimal point must be shifted according to the decimal place of the desired unit in the
transmitted value (see object directory 0x6132 AI_Decimal_digits_PV).
Process value = Transmitted value (INT16) x 10
-(Decimal_digits)
The table below contains the transmit process data objects (TPDO) on delivery.
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Productinformatie
| Merk | IFM |
| Model | VMB301 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3793 MB |
