RS485

The DWA-S comes equipped with an RS485 receiver which can be used to synchronize the time and date of the unit with other equipment. The option supplies three leads on the power supply board for connecting to the sending device. The interconnection cable between devices should be a minimum of 3 meters long to prevent interference to radio communications as required by FCC regulations. Cables less then 3 meters in length require a Fair-Rite bead (Lathem Part # VII0058) installed around the cable. The figure below indicates the signal names and corresponding wire colors.

Signal

Wire Color

 

 

Receive ( + )

White

 

 

Receive ( - )

Yellow

 

 

Signal Ground

Black

 

 

NOTE: Preferred cable is CAT-3 or CAT-5 twisted-pair, up to 4,000 feet in length.

WIRING DIAGRAMS

FIGURE 1: CONNECTION FOR DWA-S TO LTRX-512

RS-485

DWADSD-S + -

RS-485

DSD + -

RS-485

DSD + -

RS-485

DSD + -

RS-485

DSD + -

RS-485

MASTER

DSD

CLOCK + -

1

2

3

4

5

6

7

8

9

10

11

12

13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TxD

G

RxD

D

D

G

S

D

 

D

D

 

 

D ~ ~

 

 

 

 

 

 

 

 

 

 

 

N

 

+

-

N

Y

+

-

+

 

 

-

 

 

 

 

 

 

 

D

 

D

N

 

 

12V~

MODEM

RS-232

 

RS-485

 

C

SYNC

SYNC

 

 

AC

 

 

 

 

 

 

 

 

 

PULSE

OUT

 

IN

 

 

 

HOST COMMUNICATIONS

 

 

 

OUT

 

 

 

SYNC

 

 

RS-485

 

 

 

 

 

LTR8-512 & LTR8-512M Only

 

 

 

 

 

 

250ma

 

 

 

 

 

 

DATA SYNC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ports are located on the back of the Display Unit

NOTE: Since the Sync In port can send as well as receive, 30 extra devices can connect here. If you already have a Master Source, such as an LTR-0, connect it and its string of clocks to the Sync In port, for a total of up to 60 devices.

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Lathem DWA-S user manual RS485, Wiring Diagrams

DWA-S specifications

The Lathem DWA-S is a cutting-edge time and attendance solution designed for businesses that seek to streamline their timekeeping processes. This system is specifically tailored to meet the needs of modern workplaces, integrating advanced technologies that enhance efficiency and accuracy.

One of the standout features of the DWA-S is its ability to support both direct and indirect employee time tracking. This flexibility allows organizations to choose the method that best suits their operational structure, whether it be through a simple punch-in and punch-out process or more complex schedules that require detailed reporting.

The DWA-S utilizes advanced biometric technology, such as fingerprint recognition, to enhance security and reduce time theft. By requiring employees to verify their identity using their unique fingerprints, the system ensures that attendance records are authentic, thereby promoting accountability in the workforce. This feature is particularly beneficial for businesses that employ a high number of hourly workers, as it minimizes the risk of buddy punching.

In terms of connectivity, the Lathem DWA-S is equipped with both Ethernet and Wi-Fi capabilities. This dual connectivity allows for seamless integration with existing payroll systems and makes it easy to access attendance data in real-time. Employers can retrieve reports and analytics that are crucial for optimizing labor management, ultimately leading to better workforce planning.

Another key aspect of the DWA-S is its user-friendly interface. Designed with ease of use in mind, the touchscreen display simplifies the process for employees and administrators alike. The intuitive navigation facilitates quick setup and operation, reducing the learning curve for new users and ensuring that organizations can begin reaping the benefits of the system almost immediately.

Additionally, the DWA-S is built to withstand the rigors of a busy work environment. Its robust construction ensures durability, while its sleek design makes it an attractive addition to any workplace. Furthermore, the system is designed to operate effectively across a range of temperatures, confirming its suitability for various industrial settings.

In summary, the Lathem DWA-S stands out as a reliable time and attendance solution that combines advanced biometric technology, dual connectivity, and user-friendly functionality. Its ability to enhance accuracy and security in employee time tracking makes it a valuable asset for any organization looking to improve payroll efficiency and workforce management.