Xinje XD Series User Manual

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(1) Take 06H function code as example (single register write), and introduce data format.
E.g.: upper computer write data to PLC H0002 (D2).
RTU mode:
Asking format
Response format
ID
01H
ID
01H
Function code
06H
Function code
06H
Register ID
00H
Register ID
00H
02H
02H
Data content
13H
Data contents
13H
88H
88H
CRC CHECK High
25H
CRC CHECK High
25H
CRC CHECK Low
5CH
CRC CHECK Low
5CH
Explanation：
1. Address is PLC station no.
2. Function code is Modbus-RTU protocol read/write code.
3. Register address is the PLC modbus address, please see chapter 6-2-3.
4. Data content is the value in D2.
5. CRC CHECK High / CRC CHECK Low is high and low bit of CRC check value.
If 2 pieces of Xinje XD3 series PLC communicate with the other one, write K5000 to D2.
M 0
R E G W K 1 H 0 0 0 2 K 5 0 0 0 K 2
M0 is trigger condition (Rising edge). If communication fails, the instruction will try twice. If
the third time communication fails, then communication ends.
The relationship between REGW and Modbus RTU protocol (other instructions are the same)
REGW
Function code 06H
K1
Station no.
H0002
Modbus address
K5000
Data contents 1388H
K2
PLC serial port
The complete communication datum are: 01H 06H 00H 02H 13H 88H (system take CRC
checking automatically)
If monitor the serial port2 data by serial port debugging tool, the datum are: 01 06 00 02 13
88 25 5C
Note: The instruction doesn’t distinguish decimal, hex, binary, octal etc. For example,
B10000, K16 and H10 are the same value, so the following instructions are the same.
REGW K1 B111110100 D1 K2
REGW K1 K500 D1 K2
REGW K1 H1F4 D1 K2
(2) Function code 01H/02H: read coil/read input coil
Eg. Read coil address 6000H (Y0). At this time, Y0 and Y1 are ON.
RTU mode:
Asking format
Response format
Address
01H
Address
01H
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Xinje XD Series Specifications

General

Input Voltage	24V DC
Storage Temperature	-20°C to 70°C
Protection Class	IP20
Type	PLC
Series	XD
Programming Language	Ladder Logic, Instruction List
Communication Interface	RS232, RS485
Power Supply	24V DC
Digital Inputs	Available (number varies by model)
Digital Outputs	Available (number varies by model)
Analog Inputs	Available (number varies by model)
Analog Outputs	Available (number varies by model)
Output Type	Relay, Transistor
Number of Inputs	Varies by model (see Digital Inputs and Analog Inputs)
Number of Outputs	Varies by model (see Digital Outputs and Analog Outputs)
Operating Temperature	0°C to 50°C
Humidity	5% to 95% (non-condensing)