Interfaces
3.5 Onboard drive interface (C230-2, C240)
SIMOTION C
Operating Instructions, 02/2012
49
Signal parameters
All signals for stepper drives are output by means of differential signal line drivers in
accordance with the RS422 standard. For optimal reliability, the power unit should have
differential signal receivers or optical coupler inputs to enable symmetrical signal
transmission. An asymmetrical transmission is also possible, however, the maximum cable
length in this case is limited to 10 m.
Note
Because of the wide range of non-standardized input circuits of the drive units during
asymmetrical transmission, no responsibility can be taken for this function. In particular,
cable lengths and the limit frequency depend on the properties of the input circuit and the
cable being used. In addition, the GND reference potential should be isolated to prevent
electrical interference.
All outputs are electronically protected against short-circuit and thermal overload.
