Process data configuration
The MOVITRAC® B frequency inverter can be controlled with 1 to 10 (with RS485 with 1 to 3) process data words via the communication interfaces. The number of process input data (PI) and process output data (PO) is identical.
The process data configuration is set using DIP switches on the option card or via the SBus master when starting up the bus system (e.g. PROFIBUS-DP or RS485). In this way, the frequency inverter is automatically given the right setting. You can use the keypad or the MOVITOOLS® MotionStudio fieldbus monitor to check the current process data configuration under the menu item P090 Fieldbus PD configuration.
Depending on the fieldbus interface in use, the following process data configurations are active:
P090 PD configuration | |
|---|---|
1 process data word + parameter channel | 1PD+PARAM |
1 process data word | 1PD |
2 process data words + parameter channel | 2PD+PARAM |
2 process data words | 2PD |
.... | .... |
10 process data words + parameter channel | 10PD+PARAM |
10 process data words | 10PD |
Note: 3 PD for bus cards, 10 PD for FSE24B of the front module type.
For process data control of the frequency inverter, only the number of process data is relevant (that is 1PD - 10PD). These process data are usually mapped in the I/O or peripheral area when programmable logic controllers are used as fieldbus master. This means the I/O or peripheral area of the PLC must provide sufficient memory space for the process data of the frequency inverter (see following figure). The address between process data of the frequency inverter and the PLC address area is usually assigned on the fieldbus master interface module.
