Trinamic TMCM-078, Manual, Page: 7 / 27

TMCM-078 Manual (V1.03 / September 10th, 2008) 7
Copyright © 2008, TRINAMIC Motion Control GmbH & Co. KG
3.1.3 RS485
Pin
Name
Function
Screw
JST
1 RS485A RS485A RS485+ line
2 RS485B RS485B RS485- line
3 RS485A RS485A RS485+ line (same as pin 1)
4 RS485B RS485B RS485- line (same as pin 2)
Table 3.3: RS485 connector
3.1.4 Step / Dir
Screw connector JST connector
Pin Name Function Pin Name Function
1 Step +
Optically isolated step input
(positive)
1 +3.3V Co3.3V output, reference
2 Step -
Optically isolated step input
(negative)
2 S +
Differential step input
(non inverted)
3 Dir +
Optically isolated direction
input (positive)
3 S -
Differential step input
(inverted)
4 Dir -
Optically isolated direction
input (negative)
4 D +
Differential direction input
(non inverted)
5 D
Optically isolated disable input
(positive)
5 D -
Differential direction input
(inverted)
6 Disable -
Optically isolated disable input
(negative)
6 Dis +
Differential disable input
(non inverted)
-- -- -- 7 Dis -
Differential disable input
(inverted)
-- -- -- 8 GND GND
Table 3.4: Step-/Direction connector
1
2
3
4
5
6
Figure 3.2: Opto isolated input circuit