Z 257 Microstep Driver
Input voltage: 20-90 VDC (larger range than DM 542 which is only 20 - 50VDC)
Current Output: 2- 7A (DM 542 only 1- 4.2 A)
Troubleshoot code is more detailed and clearer than DM 542
Increase motor torque up to 20%
Increase max motor rotation 10 - 20%