WS Communication interface
The WS communication interface was developed for the data exchange by machines and higher IT systems in the food production, filling and packaging. It is based on Ethernet TCP/IP. Proprietary communication commands allow an easy, hardware-, software- and platform independent implementation.
The picture illustrates exemplary the query of counters. The higher MES or PDA-system (client) sends a request with a „Read single Value“-command to the counter number 50257 to the machine (server). The command is filled up to a same length of 4 data words by a dummy. The machine processes the request and sends back the value 10,000 in the according answer.
The following commands were specified:
| obligatory | |||
| NOOP | No function ("sign of life") | ||
| READ_SVALUE | Reading of a value | ||
| WRITE_SVALUE | Writing of a value | ||
| optional | |||
| READ_LIST | Reading of a list of values | ||
| WRITE_LIST | Writing of a list of values | ||
| READ_MVALUE | Reading of several values | ||
| WRITE_MVALUE | Writing of several values | ||
| READ_STRING | Reading of a string | ||
| WRITE_STRING | Writing of a string | ||
| READ_CONFIG | Reading of the device description file | ||
| READ_MIXED_LIST | Reading of a mixed list of values | ||
| WRITE_MIXED_LIST | Writing of a mixed list of values |