8
DIRECTION SIGNALS
This output is TTL/CMOS compatible. The source current rating (Voh = 2.7 V) is 12mA. The sink current rating (Vol =
0.5 V) is 9mA. The Direction signal is +5VDC for '+' or clockwise motion, and 0VDC for '-' or counterclockwise motion.
SOFT LIMIT
This input will cause the motor to ramp down to the base speed. This input contains a 2.5K pullup resistor to +5VDC.
It should be activated by connecting it to the 0VDC pin, or a logic level that can sink 2.0mA at TTL levels.
HOME LIMIT
This is similar to the Hard Limit. It will cause the motor to stop without ramping down. This input contains a 2.5K pullup
resistor to +5VDC. It should be activated by connecting it to the 0VDC pin, or a logic level that can sink 2.0mA at TTL
levels. See the Command Dictionary Section for more information.
PIN DESCRIPTION PIN FUNCTION DESCRIPTION
FUNCTION
1 +5VDC 5 VOLT DC OUTPUT 20 C:SOFT- C: - SOFT LIMIT SWITCH
2 OUT6 OUTPUT 6 21 C:HOME+ C: + HOME LIMIT SWITCH
3 OUT7 OUTPUT 7 22 C:HOME- C: - HOME LIMIT SWITCH
4 OUT8 OUTPUT 8 23 C:HARD+ C: + HARD LIMIT SWITCH
5 OUT9 OUTPUT 9 24 C:HARD- C: - HARD LIMIT SWITCH
6 OUT10 OUTPUT 10 25 0 VDC O VOLT DC REFERENCE
7 0VDC 0 VOLT DC 26 D:CLOCK D: CLOCK
8 IN6 INPUT 6 27 D:DIR D: DIRECTION
9 IN7 INPUT 7 28 D:EA D: ENCODER CHANNEL A
10 IN8 INPUT 8 29 D:EB D: ENCODER CHANNEL B
11 IN9 INPUT 9 30 D:EZ D: ENCODER CHANNEL Z
12 IN10 INPUT 10 31 D:SOFT+ D: + SOFT LIMIT SWITCH
13 C:CLOCK C: CLOCK 32 D:SOFT- D: - SOFT LIMIT SWITCH
14 C:DIR C: DIRECTION 33 D:HOME+ D: + HOME LIMIT SWITCH
15 C:EA C: ENCODER CH. A 34 D:HOME- D: - HOME LIMIT SWITCH
16 C:EB C: ENCODER CH. B 35 D:HARD+ D: + HARD LIMIT SWITCH
17 C:EZ C: ENCODER CH. Z 36 D:HARD- D: - HARD LIMIT SWITCH
18 C:SOFT+ C: + SOFT LIMIT SWITCH 37 0 VDC 0 VOLT DC REFERENCE
19 NC NO CONNECTION
DB37 PINOUT FOR AXES C & D
HARD LIMIT
When a hard limit switch is encountered, all motion will stop in the given direction. Keep in mind that the motor may
overshoot when this is used. The position given by the position register may not reflect where the motor ended up
stopping due to the overshoot. If an encoder is used, the encoder will reflect the actual motor position. This input
contains a 2.5K pullup resistor to +5VDC. It should be activated by connecting it to the 0VDC pin, or a logic level that
can sink 2.0mA at TTL levels.