JPT YDFLP-E-20-LP-S - Page 15

YDFLP-E-20&30&50-LP User’s Manual
11 File Number: S-PI-0033
Table 8 DB25 interface definition
DB25 PIN#
Definition
1-8
IP0-IP7 Power Control
9
Latches power setting into the laser by rising edge
10-15
GND
Description: PIN10-15 have connected to the ground inside the fiber laser,
only need to connect control card GND with one of Pins.
16，21
Warning signal
Description:16 low level,21 high level: Normal
16 low level,21 low level: temperature alarm
19
Emission Modulation input (PA)
HIGH: Emission ON
LOW: Emission OFF
20
Frequency Modulation (TTL)
23
Emergency Stop signal
High level: Normal; Low level: Emergency Stop (this function can be
selected in GUI)
Emergency stop signal is from low to high, need to detect the rising edge of
MO firstly, then the laser can be re-emitted.
22
Control the pulse width ENABLE (Red Beam is preferred when Laser and
Red Beam are mutually exclusive. * refer to note2)
High Level: Red Beam On
Low Level: Red Beam Off
18
MO signal for turn on/off
HIGH: ON
LOW: OFF
17，24，25
No need to connect
Note 1: 4.6-5.4V will be recognized as TTL high; 0-0.5V will be recognized as TTL low.
Note 2：Red beam Pin22 signal has higher priority than MO and PA signal. When Pin22 signal is
high, MO and PA signal will be shut down internally. The laser can be emitted by restarting MO
and PA after Pin22 signal is low. When laser (Built-in red pilot laser version) alarms, the red beam
will take 2 short flashes and 1 long flashes as symbol till the alarm stops, and the cycle time is
about 1.5s.