Product Introduction
ADM-4108R is an 8-channel relay switch output module that can be widely used for signal control of industrial field equipment. 8-way A-type (normally open) relay output, relay capacity of 3A @ 250VAC/30VDC. The communication interface adopts RS-485 interface and supports standard MODBUS RTU protocol, which can be directly connected to configuration software, PLC, DCS industrial control touch screen.
Product Specifications
(1) Switching output
1. Output channel: 8-way A-type (normally open) relay output (customizable 5-way relay output)
2. Load voltage: 0~250VAC or 0~30VDC
3. Load current: 3A
(2) Communication interface
1. Communication protocol: MODBUS-RTU
2. Interface type: Optoelectronic isolation RS-485 interface
3. Interface protection: 15KV ESD protection, 1500V isolation protection
4. Baud rates: 1200bps, 2400bps, 4800bps, 9600bps, 19200bps
38400bps、57600bps、115200bps.
5. Check bits: no check, even check, odd check
6. Default parameters: 9600, N， 8, 1 (baud rate and parity can be modified)
(3) System parameters
1. Module size: 104mm x72mmx26mm
2. Installation method: 35mm DIN rail installation
3. Working environment: Temperature: -20~70 ℃ Humidity: 0-95%, non condensing
4. Working power supply: DC9~30V less than 3W
Definition of module indicator lights
1. POWER: Power status indicator, constantly on/normal power supply
2. COMM: RS-485 interface communication indication, flashing/module is sending and receiving data
3. RO0~RO7: Relay action indication, lit/relay closed
Use default communication parameters
When the communication parameters of the module (module address, baud rate, parity) are forgotten, short-circuit the Initiat and VS - pins and power on the module again. At this time, the communication parameters of the module are (9600, N, 8, 1) and the module address is 01.
When the Initiat and VS pins are disconnected, the user communicates using the pre-set communication parameters after starting the module. The module parameters at the factory are (9600, N, 8, 1), and the module address is 01.