Sagittar SGT-LD-5-23 User Manual download pdf (Page 18)

Chapter 2 Hardware Installation Page 18

Figure 4 Interface Definition

RS-232

RS-232, which is labeled COM/RESET, is used for debugging purposes as well as for hard reset of the

SGT-LD-55-23. Below you may find the pin definition of the RS-232.

Table 1 PIN Definition

Pin Assignment

Name

Description

TXD0

Data Transmit 0

DSR0

Data Set Ready 0

RXD0

Data Receive 0

TXD1

Data Transmit 1

RXD1

Data Receive 1

DTR1

Data Terminal Ready

Hard Reset

Hard reset the unit

GND

Ground

To reset the device, short P7 (Hard Reset) to P8 (GND) for less than 1 second and the system will

reset. If P7 (Hard Reset) is shorted to P8 (GND) for over 5 seconds, the SGT-LD-55-23 LD will be

reset to the factory default settings.

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Sagittar SGT-LD-5-23 User Manual Page 18