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Product Model: IOM16800
Overview：
IOM16800 uses the mainstream ARM kernel 32 bit microprocessor, Modbus RTU and BACnet MS/TP supports two protocols (choose one), can realize the rapid expansion of I/O module controller.
Protocol specification：
1.Modbus support RTU protocol, can quickly realize the controller with the support of the implementation of the protocol of network connection, fast I/O port expansion. Please refer to the specific use of the Modbus RTU test tools.
2.BACnet support MS/TP protocol, can quickly realize the controller with the support of the implementation of the protocol of network connection, fast I/O port expansion. Please refer to the specific use of the BACnet MS/TP test tools.
Main Parameter：
| Processor |
32 bit |
| Clock Frequency |
72MHZ |
| Memory |
64KB flash, 20KB random access memory |
| Power |
DC/AC 24V |
| Communication |
Modbus RTU(2.4k/4.8k/9.6k/19.2k)
BACnet MS/TP(9.6k/19.2k/38.4k/76.8k) |
| Digital Input |
Support dry contact input |
| Digital Output |
Support 24VDC <3A |
Model specification：
|
Product Model |
BI/DI |
BO/DO |
AI |
AO |
|
IOM16800 |
16 |
8 |
0 |
0 |
Product display ：
Register definition specification：
1.Modbus RTU corresponding register
BI/DI---Input Status(0x02)
|
BI/DI Register Address |
BI/DI |
Instruction |
|
10001 |
1 |
Digital Input Port |
|
10002 |
2 |
Digital Input Port |
|
10003 |
3 |
Digital Input Port |
|
10004 |
4 |
Digital Input Port |
|
10005 |
5 |
Digital Input Port |
|
10006 |
6 |
Digital Input Port |
|
10007 |
7 |
Digital Input Port |
|
10008 |
8 |
Digital Input Port |
|
10009 |
9 |
Digital Input Port |
|
10010 |
10 |
Digital Input Port |
|
10011 |
11 |
Digital Input Port |
|
10012 |
12 |
Digital Input Port |
|
10013 |
13 |
Digital Input Port |
|
10014 |
14 |
Digital Input Port |
|
10015 |
15 |
Digital Input Port |
|
10016 |
16 |
Digital Input Port |
BO/DO—Coil Status(0x01/0x05)
|
BO/DO Register Address |
BO/DO |
Instruction |
|
00001 |
1 |
Digital Output Port |
|
00002 |
2 |
Digital Output Port |
|
00003 |
3 |
Digital Output Port |
|
00004 |
4 |
Digital Output Port |
|
00005 |
5 |
Digital Output Port |
|
00006 |
6 |
Digital Output Port |
|
00007 |
7 |
Digital Output Port |
|
00008 |
8 |
Digital Output Port |
AO—Holding Register(0x03/0x06)
|
AO Register Address |
AO |
Instruction |
|
40001 |
- |
Device address 1
（1-127） |
|
40002 |
- |
baud rate 9600
（19200/9600/4800/2400） |
|
40003 |
- |
Parity bit without
(0- no /1- odd /2-even) |
2.BACnet MS/TP corresponding register
BI/DI
|
BI/DI Register Address |
BI/DI |
Instruction |
|
0 |
1 |
Digital Input Port |
|
1 |
2 |
Digital Input Port |
|
2 |
3 |
Digital Input Port |
|
3 |
4 |
Digital Input Port |
|
4 |
5 |
Digital Input Port |
|
5 |
6 |
Digital Input Port |
|
6 |
7 |
Digital Input Port |
|
7 |
8 |
Digital Input Port |
|
8 |
9 |
Digital Input Port |
|
9 |
10 |
Digital Input Port |
|
10 |
11 |
Digital Input Port |
|
11 |
12 |
Digital Input Port |
|
12 |
13 |
Digital Input Port |
|
13 |
14 |
Digital Input Port |
|
14 |
15 |
Digital Input Port |
|
15 |
16 |
Digital Input Port |
BO/DO
|
BO/DO Register Address |
BO/DO |
Instruction |
|
0 |
1 |
Digital Output Port |
|
1 |
2 |
Digital Output Port, |
|
2 |
3 | ,
Digital Output Port |
|
3 |
4 |
Digital Output Port |
|
4 |
5 |
Digital Output Port |
|
5 |
6 |
Digital Output Port |
|
6 |
7 |
Digital Output Port |
|
7 |
8 |
Digital Output Port |
AV
|
AV Register Address |
AV |
Instruction |
|
0 |
- |
baud rate 38400
（76800/38400/19200/9600） |
Common Question
1.ModbusRTU common question:：
Q ① : What is the default communication parameter for the module?
A ① : ModbusRTU module default communication parameters are baud rate 9600, data bit 8, stop bit 1, no checksum, device default ID number is 1.
Q ② : How to modify the communication parameters of the module?
A ② : The use of third party software tool ModbusPoll, the control of the 3 register definition Instruction "section 40001, 40002, 40003, read three register data sequentially represents the device address, baud rate, parity check, modify according to" Instruction ", a list of parameters, communication module. After the power is restarted, the set parameters become effective.
2.BACnet MSTP commnon question：
Q ①：What is the default communication parameter for the module?
A ①：BACnet MSTP module default communication parameters are baud rate 38400, data bit 8, stop bit 1, no checksum, device default ID number is 1.
Q ②：How to modify the device number (i.e. address) of the module?
A ②：Computer connected to the module of A, B port through the USB 485 communication lines, using BACnetScan tool from Shanghai Sunfull to scan the module point, right click your device (e.g. Device,1), select "Change Device ID", you can modify the module device number (i.e., address). |
