GasSecure GS01
Hardware Manual
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HAPTER
3
3.
COMMISSIONING
The GS01 detector(s) is (are) set up in a wireless sensor network with a gateway
and router. The exact commissioning procedure depends on the selected type of
gateway. Therefore, this manual must be used together with the relevant
documentation written for the respective gateway. Some references for such
documentation are provided in Section 9.
On completion of commissioning, the proof test, as described in Section 4.2,
should be executed to validate the correct mapping of the detector output data.
3.1
Communication
The GS01 detector complies with the ISA100 Wireless™ standard for wireless
communication.
Each GS01 detector must be paired with a single gateway, before it can
communicate with the network. The gateway is the interface between the wireless
and plant networks. It marks the transition between communications compliant to
the standard and other communications, and acts as a translator between ISA100
Wireless™ and other protocols (Modbus, PROFINET, etc.).
The pairing process, where the device obtains the appropriate security credentials
and network-specific information, is referred to as provisioning and is explained in
Section 3.7.
3.2
ISA100 Wireless™ standard
ISA100 Wireless™ is a wireless networking technology standard developed by the
International Society of Automation (ISA).
This ISA standard is intended to provide reliable and secure wireless operation for
safety, control, and monitoring applications. This standard defines the protocol
suite, system management, gateway, and security specifications for low-data-rate
wireless connectivity with fixed, portable, and moving field devices supporting very
limited power consumption requirements. The application focus is to address the
performance needs for periodic monitoring and process control where latencies on
the order of 100 ms can be tolerated with optional behaviour for shorter latency.
3.3
ISA100 objects
ISA100.11a defines a communication protocol, with an application layer that
includes a simple but extensible set of input and output objects.
The GS01 detector publishes the measured values and diagnostic information as
ISA100 objects with attributes. It is distinguished between standard attributes and
GS01 device specific attributes.
3.3.1
Standard objects
The GS01 publishes ISA100 standard objects with attributes for process value
and diagnostic status as outlined in Table 3-1 below. The gas measurement value
