HRX-OM-W058
Chapter 5 Display and setting of various functions
HRS-R Series 5.19 Communication function
Communication mode setting and cheking
1. Press and hold the [MENU] key for approx. 2 sec.
Repeat pressing the key until the setting screen for communication mode [ ]
appears on the digital display.
2. Select communication mode from the table below with [▲] key or [▼] key, and confirm by
pressing “SEL”.
Table 5.19-2 List of set value
Initial value
(Default setting)
Sets LOCAL mode.
(The operation panel operates and sets the
thermo-chiller.）
Sets DIO mode.
*1
(The operation starts with contact input/output.)
Sets SERIAL mode.
*2
(Serial communication performs
operation/setting.)
*1：When the setting of the contact input 1 is “External switch signal”, “DIO mode” cannot be set.
*2：If the serial protocol is “Simple communication protocol 2” and the contact input 1 is “external
switch signal” or contact input 2 is “remote signal”, “SERIAL mode” cannot be set.
Serial protocol Settinf and checking
3. Press the [SEL] key once.
The set screen of serial protocol is displayed on the digital display.
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