1、 Overview

This product adopts mainstream ARM core 32-bit microprocessors and supports two protocols (either Modbus RTU or BACnet MSTP), which can achieve rapid expansion of the controller's I/O module.

2、 Core parameters

Processor: 32-bit, clock frequency: 72MHZ

Memory: 64KB flash memory, 20KB random access memory

Power supply: DC 24V

Communication: Modbus RTU (2.4k/4.8k/9.6k/19.2k)

BACnet MSTP (9.6k/19.2k/38.4k/76.8k)

Digital input: supports dry contact input

Digital output: supports dry contact output

3、 Model Description

model

BI/DI

BO/DO

AI

AO

IOM8400

eight

four

0

0

4、 Protocol Description

1. Support the Modbus RTU protocol, which can quickly connect to controllers that support this protocol for fast I/O port expansion. Please refer to the instructions for the Modbus RTU protocol debugging tool for specific usage methods.

2. Support the BACnet MSTP protocol, which can quickly connect to controllers that support this protocol for fast I/O port expansion. Please refer to the BACnet MSTP protocol debugging tool instructions for specific usage methods.

5、 Register Definition Description

1. Modbus RTU protocol corresponding register

BI/DI -- Input Status (0x02)

BI/DI register address

BI/DI

Explanation

ten thousand and one

one

Digital input port

ten thousand and two

two

Digital input port

ten thousand and three

three

Digital input port

ten thousand and four

four

Digital input port

ten thousand and five

five

Digital input port

ten thousand and six

six

Digital input port

ten thousand and seven

seven

Digital input port

ten thousand and eight

eight

Digital input port

BO/DO - Coil Status (0x01/0x05)

BO/DO register address

BO/DO port

Explanation

00001

one

Digital output port

00002

two

Digital output port

00003

three

Digital output port

00004

four

Digital output port

AO - Folding Register (0x03/0x06)

AO register address

AO Port

explain

forty thousand and one

---

Device Address 1 (1-127)

forty thousand and two

---

Baud rate 9600 (19200/9600/4800/240

Contact information: 15359293870

WhatsApp:+86 15359293870

Contact person: KELLY

Email: geabbdcs@gmail.com   386353502@qq.com

Official website:

Mechanical life: 10000000 operations

Installation: DIN rail quick installation according to EN 60715

Terminal connectors: hard or flexible

Screw terminal M20 x 1.5

Cable cross-section: 0.25 mm ²

Cable cross-section: 2.5 mm ²

Tightening torque of clamp: 0.6 Nm

Width: 22.5 mm

Height: 100 mm

Depth: 121 mm

Shell protection level: IP40

Gap protection level: IP54

Protection level of clamp and terminal: IP20

Ambient temperature: -25+ 60 ℃

Storage and transportation temperature: -40 ℃

Storage and transportation temperature:+85 ℃ MAX

Vibration resistance according to EN 60068-2-6:10 55 Hz, amplitude 0.35 mm, ± 15%

Impact resistance: 30 g/11 ms

Rated impulse withstand voltage: 4 kV

Conduction resistance: 40 Ω

Voltage, application category DC-12:24 VDC

Current, application category DC-12:0.1 A

Related models:

SRB211AN (V.2)

SRB211ST/CC (V.2)

SRB219IT-24VAC/DC