Supported Modbus Function Codes; Exception Responses - Teledyne D series Installation And Operation Manual

Table 7-2 Modbus RTU Configuration Options
Even 1 Stop Bit, Odd 1 Stop Bit,
Parity None 1 Stop Bit, None 2 Stop
Word Order Big Endian, Little Endian
Character Time
Table 7-3 Supported Modbus Function Codes
Function Code
01
03
05
15
16
Table 7-4 Exception Responses
Exception Code
01
02 Illegal Data Address
03 Illegal Data Value
D Series Syringe Pumps
Section 7 Modbus Configuration
Communication parameters
(Default Even 1 Stop Bit)
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 charac-
Min: Baud Rate ter t1. Used to calculate inter
dependent frame and inter character
Max: 999ms space t1.5, t3.5
(50 m sec default)
Description
Read Discrete Output Coils
Read Analog Output Holding Registers
Write Single Discrete Output Coil
Write Multiple Discrete Output Coils
Write Multiple Analog Output Holding Regis-
ters
Name Description
Function code received is
Illegal Function
not supported.
Data address received is
not an allowable address.
A value contained in the
query data field is not an
allowable 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