Modbus Rtu Configuration Options; Supported Modbus Function Codes; Exception Responses - Teledyne SyriXus 65x Installation And Operation Manual

Table 7-3 Modbus RTU Configuration Options
Item
Baud Rate 300, 1200, 2400, 4800, 9600, 19200,
38400, 57600, 115200
Slave ID 1-247
Parity Even 1 Stop Bit, Odd 1 Stop Bit, None 1
Stop Bit, None 2 Stop Bit
Word Order Big Endian, Little Endian
Character Time Min: Baud Rate dependent Max: 999ms
Table 7-4 Supported Modbus Function Codes
Function Code
01
03
05
15
16
Exception Code
01
02
03
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SyriXus Series Pumps Installation and Operation Guide
Value
Read Discrete Output Coils
Read Analog Output Holding Registers
Write Single Discrete Output Coil
Write Multiple Discrete Output Coils
Write Multiple Analog Output Holding Registers
Table 7-5 Exception Responses
Name
Illegal Function
Illegal Data Address
Illegal Data Value
Section 7 Modbus Configuration
Description
Communication Speed (Default 19200)
Device address (Default 1)
Communication parameters (Default Even 1 Stop Bit)
Word order for 32-bit integers and IEEE-754 floating
point numbers. Big Endian: AB CD; Little Endian CD
AB. (Default Big Endian)
Time to transmit single character t1. Used to calculate
interframe and intercharacter space t1.5, t3.5
(50 m sec default)
Description
Description
Function code received is not supported.
Data address received is not an allowable address.
A value contained in the query data field is not an allow-
able value for the addressed location. This may indicate a
fault in the structure of the remainder of a complex request,
such that the implied length is incorrect. Does NOT mean
data value is outside the expectation of the controller.
7-3