
Published: 25.03.2022
12 (15)
2 Modbus
2.1 Modbus properties
Protocol
RS-485 Modbus RTU
Bus speed
9600*/14400/19200/38400/57600/115200 bit/s
Data bits
8
Parity
none*/odd/even
Stop bits
1
Modbus ID
1*
Unit load
1/4 UL
* factory setting
2.2 Terminating Modbus
1.
Open the cover.
2.
Place the termination jumper.
PWR
RX
RX
REL
A
A. Termination jumper
2.3 Modbus function codes
The device supports the following Modbus function codes.
Decimal Hexa-
decimal
Function
1
0x01
Read Coils
2
0x02
Read Discrete Inputs
3
0x03
Read Holding Registers
4
0x04
Read Input Registers
5
0x05
Write Single Coil
6
0x06
Write Single Register
15
0x0F
Write Multiple Coils
16
0x10
Write Multiple Registers
2.4 Modbus registers
Note:
If you try to write a parameter value that is beyond the parameter value range, the
value will be replaced by the nearest acceptable value.
Produal Oy | Keltakalliontie 18, FI 48770 Kotka, Finland | tel. +358 10 219 9100 | [email protected]
Information is subject to change without prior notice.
EN - 1132210ug