Model	Base size	Supply voltage	Control model	Maintain torque n.m	Rotor inertia g.cm²	Communication interface
ISTM42A	0				0
SDM57（脉冲IO)	0				0
SDM42A/B（脉冲IO)	0				0

Model	Base size	Supply voltage	Control model	Maintain torque n.m	Rotor inertia g.cm²	Communication interface
SSD57-ECX总线	0				0
SSD42-ECX总线	0				0
SSD57-RS485脉冲	0				0
SSD42-RS485脉冲	0				0
SSD28-RS485脉冲	28	15-24	脉冲|Mdobus-RTY		0