Product Name: 8CH DC 5V 12V 24V RS485 RS232 (TTL) Modbus RTU UART Control Module for PLC Relay Switch Board.Package included:1 x 5V / 6-8 Channel RS485 Multifunction Control Board for 24V 1-8 Channel Relay Module
Description:1: Operating voltage: DC 5V (5V version) / DC 6-24V (6-24 version)2: operating current: 10-15mA3: '' 'open' '' close '' '' momentar '' '' Self-locking '' '' interlock '' '' 'delay' '6 commands4: Two instruction control modes: AT command and MODBUS command.5: Under AT command, the maximum delay is 9999 secondsUnder the MODBUS command, the maximum delay is 255 seconds6 AT commands can be done as serial hyperterminal INPUT (Serial Assistant);MODBUS commands can be done as serial hyper-terminals (serial assistant) or MODBUS input.7. Under MODBUS command mode, it can support up to 247 devices in parallel.8 with RS485 and RS232 (TTL) dual bus interface9 output control pins 8, 5V TTL level, low level (default) / high level output10 sizes: 45x30x15mm11.Weight: 10gInstruction manual please consult us after purchaseAppIndustrial Automated PLCRelay moduleSmart Home, Home Automation;Identification system;FW and BW motor;CCTV Control PTZ Camera;Security system;LED dot matrix display;RS485 remote control;
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Command mode selection: (figure above) M0 trip is MODBUS command mode. The M0 connection is in command mode.
Output level selection: (figure above) M1 cutout is low level output. The M1 connection is a high level output
Slave ID: different "chip ID" can be set by command, the maximum number is 247
Under MODBUS command mode, the slave identifier must be correct.
Command description, see "8-channel RS485 multifunction module".
Typical applications:
1 In command mode (M0 connection), in this mode you can enter via the serial hyperterminal (Serial Assistant) into a simple AT command control relay. In command mode time up to 9999 seconds
3 MODBUS command modes (M0 disconnection), you can control a variety of ways: Hyper Serial Terminal control (need to manually add the CRC), Modbus Poll software control (automatically add the CRC software), PLC or MCU process control.
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