GSK DA98B, User Manual

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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 ～ 820 Ω ； VCC=5V ， R=82 ～ 120 Ω .
（ 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