- 49 - GD-70D
<Communication Specifications>
NT
communication
The detector is used in a local network formed with a multi-display unit (RM-
70NT) as the base unit. For more information, see the operating manual of the
EA
The detector offers functions that work in liaison with external software using
a standard network protocol. For details, see the separate manual for
communication function.
Web function (HTTP), mail send function (SMTP), and time synchronization
function (SNTP)
Use a Web browser of an upper-unit PC to view and change setting values
and perform calibration and test on a graphical user interface.
SMTP, when receiving a gas alarm or fault alarm from an external mail
server, can send a notification mail to a registered address.
SNTP, receiving time information from a time server, can correct the clock at
regular intervals.
Modbus slave function (Modbus/TCP)
Works as a Modbus slave and feeds back a setting value in response to a
read request or changes a setting value in response to a write request.
PLC linkage function (FINS・MC)
Sends a setting value to PLC to provide information to be processed by PLC
in a ladder program. Reading from PLC is also available to change a setting
value or perform calibration and test.
LN
An internationally standardized network specification for device control. It is a
network specification that controls and manages not only gas detectors but
also air conditioning, lighting etc. equipment by the same communication
protocol called Lon-talk.
By constructing an open system, it becomes possible to connect the system
without being bound by one manufacturer, it is possible to facilitate
procurement of parts at the time of equipment failure, and to increase design
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