HRX-OM-M091
Chapter 4 MODBUS communication function
HRS Series
4.3 Setting and checking
4-5
4.
Select serial protocol from the table below with [
▲
] key or [
▼
] key, and confirm by pressing
“SEL”.
Table 4.3-3
List of set values
Set values
Explanation
Initial value
(Default setting)
MODBUS protocol
○
Simple communication protocol 1
Simple communication protocol 2
∗
2
∗
2 ：
When the setting of the contact input 2 is “Remote signal”, “Simplified
communication protocol 2” cannot be set.
Communication specification
Setting and checking
5.
Press the [SEL] key once.
The set screen of communication specification is displayed on the digital display.
PV
SV
6.
Select communication specification from the table below with [
▲
] key or [
▼
] key, and
confirm by pressing “SEL”.
Table 4.3-4
List of set values
Set values
Explanation
Initial value
(Default setting)
RS-232C standard
RS-485 standard
○
RS-485 terminal
Setting and checking
7.
Press the [SEL] key once.
The set screen of RS-485 terminal is displayed on the digital display.
PV
SV
8.
Select RS-485 terminal from the table below with [
▲
] key or [
▼
] key, and confirm by
pressing “SEL”.
Table 4.3-5
List of set values
Set values
Explanation
Initial value
(Default setting)
Without terminal
○
With terminal
