Modbus; Modbus Properties; Terminating Modbus; Modbus Function Codes - Produal HDK User Manual

Duct co2 transmitter/controller
Table of Contents

Advertisement

2 Modbus

2.1 Modbus properties

Protocol
RS-485 Modbus RTU
Bus speed
9600*/19200/38400 bit/s
Data bits
8
Parity
none*/odd/even
Stop bits
1
Network size
up to 128 devices per segment
* factory setting

2.2 Terminating Modbus

1. Open the cover.
2. Place the termination jumper.
A. Termination jumper

2.3 Modbus function codes

The device supports the following Modbus function codes.
0x01
Read Coils
0x02
Read Discrete Inputs
0x03
Read Holding Registers
0x04
Read Input Registers
0x05
Write Single Coil
0x06
Write Single Register
0x0F
Write Multiple Coils
0x10
Write Multiple Registers
0x17
Read/Write Multiple Registers
Produal Oy | Keltakalliontie 18, FI 48770 Kotka, Finland | tel. +358 10 219 9100 | fax. +358 5 230 9210 | info@produal.com
Published: 28.08.2019
G
G0
Y1
PWR
Y2
RX
Y3
TX
Y4
REL
A+
B-
BUS
NO
TERM
NC
A
Information is subject to change without prior notice.
12 (15)
EN - 1135050ug

Advertisement

Table of Contents
loading

Table of Contents