Galil DMC-2X00 用户手册

•  Appendices 

ACMD Amplifier Command: 

 +/-10 volt analog signal.  Resolution 16-bit DAC or 
0.0003 volts.  3 mA maximum 

A+,A-,B+,B-,IDX+,IDX- Encoder and 
Auxiliary 

TTL compatible, but can accept up to +/-12 volts.  
Quadrature phase on CHA, CHB.  Can accept single-
ended (A+,B+ only) or differential (A+,A-,B+,B-).  
Maximum A, B edge rate: 12 MHz.  Minimum IDX pulse 
width: 80 nsec. 

Pulse 

TTL (0-5 volts) level at 50% duty cycle.  3,000,000  
pulses/sec maximum frequency 

Direction 

TTL (0-5 volts) 

Limit Switch Inputs, Home Inputs.  

IN[1] thru IN[8] Uncommitted Inputs and 
Abort Input 

IN[9] thru IN[16] Uncommitted Inputs  
(DMC-2x50 through DMC-2x80 only) 

2.2K ohm in series with opto-isolator.  Active high or low 
requires at least 1mA to activate.  Once activated, the 
input requires the current to go below 0.5ma.  All Limit 
Switch and Home inputs use one common voltage 
(LSCOM) which can accept up to 24 volts.  Voltages 
above 24 volts require an additional resistor. 

   ≥ 1 mA = ON;     ≤ 0.5 mA = OFF 

AN[1] thru AN[8] Analog Inputs: 

Standard configuration is +/-10 volts.  12-Bit Analog-to-
Digital converter.  16-bit optional. 

OUT[1] thru OUT[8] Outputs: 

TTL 

OUT[9] thru OUT[16] Outputs: 

(DMC-2x50 through DMC-2x80 only) 

TTL 

IN[81], IN[82] 

Auxiliary Encoder Inputs for A (X) axis.  Line Receiver 
Inputs - accepts differential or single ended voltages with 
voltage range of +/- 12 volts.