Step 3: Selecting the operating mode
The GSD contains several access points that are used to select the operating mode. Between 2 and 4 operating modes are available, depending on the configuration type. The two fundamental operating modes are "ZPA mode" (Zero Pressure Accumulation) and "PLC mode".
The "ZPA mode" contains a zero pressure accumulation conveying logic. In "ZPA mode", the fieldbus controllers exchange commands between themselves and regardless of the higher-level controller.
In "PLC mode", the fieldbus controllers are controlled directly by the PLC.
The access points are explained briefly in the following table. Refer to the chapter Appendix for a detailed description.
Configuration type | Access points | Description | Bytes |
|---|---|---|---|
standard configuration | ECC-DFC-24-00 | Reserved for internal use. | 64 |
ECC-DFC-24-00 in reduced PLC mode | This access point is optimized for an I/O length of 16 bytes. | 16 | |
ECC-DFC-24-00 in reduced ZPA mode | This access point is optimized for an I/O length of 30 bytes. | 30 | |
full PLC configuration | ECC-DFC-24-00 in 4PDW PLC mode | This access point uses an efficient profile reduced to 4 bytes. As in PLC mode, the PLC takes full control of the ECDriveS®. | 8 |
ECC-DFC-24-00 in PLC mode | Full implementation of PLC mode. | 64 | |
ECC-DFC-24-00 in reduced PLC mode | This access point is optimized for an I/O length of 16 bytes. | 16 | |
ECC-DFC-24-00 in ZPA mode | Full implementation of ZPA mode. | 64 |
