Yaskawa MP940 Reference Manual - Manual (Page 101)

Serial Transmission Function MotionSuite™ MP940 Machine Controller Reference Manual
4-10
RS422/485 Interface Cable
1. Ensure that the drive system, control system, power system, and other
transmission systems are separate from each other.
2. The MP940 interface module RS422/485 interface is an MDR-14
female pin (Port 2).
3. The RS422/485 cable length is 300m maximum. Use the minimum
length necessary.
4. The MP940 module RS422/485 interface is a non-isolated system.
Errors may occur from noise in the connected terminal. If so, reduce
the noise by using a shield-type cable and modem.
5. In the case of RS422, insert a terminal resistor as needed. Make the ter-
minal on the receiving side.
6. In the case of RS-485, attach a terminal resistor to both ends of the
transmission line.