SMC Networks HRS012-W, Operation Manual

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HRX-OM-M091
Chapter 1 Read before using
1.1 Communication mode and operation method HRS Series
1-2
1.1 Communication mode and operation method
LOCAL, DIO and SERIAL are available as the communication modes. Table
1.1-1 explains the communication modes. The default setting is LOCAL.
The operation method depends on the communication mode. Table 1.1-2 shows
how the communication mode and method of operation are related.
The operation of the product functions depends on the communication mode.
Table 1.1-3 shows how the communication mode and functions of this product
are related.
Table 1.1-1 Communication modes
Communication mode Explanation
LOCAL Mode allowing the product to be operated by the operation panel.
Mode allowing the product to be operated by the contact input/output communication.
When the communication mode is “DIO”, operation mode automatically becomes “DIO
REMOTE”.
"DIO REMOTE” and “DIO LOCAL” can be selected by DIO communication signal.
DIO REMOTE ：
Contact input/output communication takes control of the operation
of the product.
The [REMOTE] lamp on the operation panel turns on.
DIO
DIO LOCAL ：
Operation control of the product is the same as that of LOCAL.
The [REMOTE] lamp on the operation panel turns off.
SERIAL
Mode allowing the product to be operated by serial communication. MODBUS/ simple
communication protocol can be selected.
Table 1.1-2 Communication mode and operation
DIO SERIAL
Simple
communication
protocol pattern
LOCAL
DIO
LOCAL
DIO
REMOTE
MODBUS
1 2
Run/Stop control with operation display
panel
○ ○ × × ○ ×
Circulating fluid discharge temperature
setting control with operation display panel
○ ○ ○ × ×
Except above with operation display panel
○ ○ ○ ○ ○
Condition reading with operation display
panel
○ ○ ○ ○ ○
Run/Stop operation by contact input/output
communication
× × ○ × × ○
Condition reading by contact input/output
communication
○ ○ ○ ○ ○
Reading of the external switch
○ ○
∗
1
○
∗
1
○ ○ ○
∗
1
Run/Stop operation by serial
communication.
× × × ○ ×
Circulating fluid discharge temperature
setting control by serial communication.
× × × ○ ○
Condition reading by serial communication. ○ ○ ○ ○ ○
∗
1:
Only one external switch can be installed.
Table 1.1-3 Communication mode and product functions
DIO SERIAL
Simple
communication
protocol pattern
LOCAL DIO
LOCAL
DIO
REMOTE
MODBUS
1 2
Run timer
○ ○ × × ○
×
Stop timer ○ ○ × × ○ ×
Recovery from power failure ○ ○ × × ○ ×
Anti-freezing ○ ○ ○ ○ ○ ○
Pump accumulated operating time reset
○ ○ × × ○ ×