GSK DA98B - Pulse Input Pattern

GSK CNC Equipment Co., Ltd.
20
270
270
控制装置侧
PULS+
PULS-
SIGN+
SIGN-
R
R
VCC
Fig. 3.8 Single terminal drive mode of pulse volume input interface
（1） It is suggested to apply differential drive mode to correctly transmit pulse volume
data;
（2） AM26LS31, MC3487 or RS422 linear driver are employed in the differential drive
mode;
（3） Action frequency will be reduced in single terminal drive mode. According to pulse
volume input circuit, Resistance R is determined by the max. 25V voltage of external
power and 10 ～15mA drive current of the pulse input circuit. Practical data:
VCC=24V，R=1.3～2K；VCC=12V，R=510～820Ω；VCC=5V，R=82～120Ω.
（4） Refer to Table
3－4 about pulse input form, arrowhead indicates counting curb, and
Table
3－5 shows pulse input time sequence and parameter. If two-phase input
form is employed, 4-fold pulse frequency is less than 500kHz.
Table
3－4 Pulse input pattern
Pulse instruction form CCW CW Parameter setting value
Pulse string sign
PULS
SIGN
0
Instruction pulse +sign
CCW pulse string
CW pulse string PULS
SIGN
1
CCW pulse /CCW pulse
A phase pulse string
B phase pulse string PULS
SIGN
2
2-phase instruction
pulse
Controller side