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3
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Set the address (Unit ID)
The address set using the address setting switches is the unit ID. In case of Modbus TCP (Ethernet),
the unit ID also serves as the 4th value of the IP address.
Set the address by taking the following steps.
Do not use the address “255 (1111 1111)”, because the communication will be disabled.
The address can be set to any value within the settable range, but if the same address is
used by more than one unit (detector), the relevant units cannot communicate.
Set the address by sliding the eight address setting switches to the “1” or “0” positions.
The 8-digit number is an 8-bit binary number representing the address.
The address settable range is 1 (0000 0001) to 254 (1111 1110).
Set value
Description
0 (0000 0000)
Invalid address
Modbus RTU (RS-485): Do not use the address “0 (0000 0000)”, because
the relevant units cannot communicate.
Modbus TCP (Ethernet): If the address is set to “0 (0000 0000)” with the
address setting switches, it will be superseded by the value set by a web
browser.
1 (0000 0001) to
254 (1111 11110)
Valid address
Modbus RTU (RS-485): The address represents the unit ID.
Modbus TCP (Ethernet): The address represents the 4th value of the IP
address.
Refer to the PS-7-M IP address setting guide (separate document) for how to
change the IP address with a web browser.
NOTE
1
0
Address setting switches (left eight DIP switches)
