The Ethernet sin-/cos counter system MSX-E1721 has 4 sin/cos counter inputs with 11 µApp and 16 digital I/O, 24 V. The digital lines can be parameterised as pairs of inputs or outputs. The system was especially developed for data acquisition and calculation close to the test object in the harsh industrial environment and has a robust normed metal housing with the degree of protection IP 65. It has an extended temperature range from -40°C to +85°C. The ARM®9 32-bit processor allows the calculation of the acquired values. The Development Mode allows to customise applications individually. Through synchro connection, several MSX-E systems can be cascaed and synchronised with one another in the µs range.