The DAM142 is for monitoring 24 digital input(can be used as pulse counter). It supports Modbus RTU Protocol over RS485 serial port. Powered up by 10~30VDC.

The DAM142 is used widely in industrial automation control systems. E.g.: Base Transceiver Station, diesel generator rooms, engine room, transformer substations, telecommunication equipment rooms, power supply systems and so on.

The DAM142 is an industrial class, high reliability, low-power consumption, high stability and high precision data acquisition module.

The DAM142 with fire retardant shell, standard 35mm DIN rail makes it easy to install in fields.

Mainly Features :
Ø 24 digital input, Dry contact or Wet contact(logic:0~0.5V or NC=0, +3~30V or NO=1, input voltage range: 0～30V, Input Max. voltage range: -10～40V), can be used as pulse counter input: counter sampling frequency:1KHz, impulse width of high or low level must >1mS, Max. counter value is 4 bytes: FFFFFFFFH;

Ø Wide range power supply with reverse polarity connection protection;

Ø Modbus RTU Protocol;

Ø ESD Protection circuit for RS485 serial port;

Ø Using industrial-grade chips;

Ø Built-in watchdog ensure it reliability;

Ø Lightning protection ensure it stability;

Ø LEDs for status indication makes it easy to program in filed.

Rated Power Input
10~30VDC(Peak Voltage must≤40V)

Power Consumption
Typically ≤3W

Communication Protocol
Modbus RTU

Modbus Address
1~247

Data Format
n,8,1; e,8,1; o,8,1 or n,8,2

Communication Interface
RS485

Baud Rate
1200, 2400, 4800, 9600, 19200, 38400Bps

Digital Input
16 digital input, Dry contact or Wet contact

Parameter Name	Parameter Value
Signal type	digital
Bus	Modbus RTU, RS485
Applications	automation
Mounting	DIN rail