MKS 275420-1-GQ-T-00011, Instruction Manual

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Series 275 Convectron Module with DeviceNet
Instruction Manual - 275502 27
DeviceNet Operation
5.1 DeviceNet Protocol for the Mini-Convectron Module
The Mini-Convectron module is based on the Open DeviceNet Vendors Association (ODVA) and
S-Analog Sensor Object Class Subclass 01 (Instance Selector) standards. The command set includes
public and vendor-specific classes, services, and attributes.
DeviceNet communication requires identifier fields for the data. The use of identifier fields provides the
means for multiple priority levels, efficient transfer of I/O data, and multiple consumers. As a node in
the network, the module produces data on the network with a unique address. All devices on the
network that need the data listen for messages. When other devices on the network recognize the
module’s unique address, they use the data.
Table 5-1 Polled I/O Messaging Summary
Instance Master data Device data Data type Description Type
1 None 00 00 UINT UINT vacuum pressure Open
Note: Unsigned binary is used to represent the positive analog voltage.
5.1.1 Standard Objects
There is a single instance of the Identity Object for the Mini-Convectron Module. No class attributes
are supported. All of the instance attributes are contained in ROM or EEPROM.
Identity Object
Table 5-2 Explicit Message Summary - Identity Object
Service Class Instance Attribute Master data Device data Data type Description Type
0E
hex
1 1 1 None
00 5C
hex
UINT Vendor identification Open
0E
hex
1 1 2 None
00 00
hex
UINT Product type Open
0E
hex
1 1 3 None 00 01 UINT 275 product ID Open
0E
hex
1 1 4 None 01 01 STRUCT Firmware revision Open
0E
hex
1 1 5 None 00 00 WORD Status and fault information Open
0E
hex
1 1 6 None 00 00 00 00 UDINT Serial number Open
0E
hex
1 1 7 None “GP275” S_STRING Identification Open
05
hex
1 1 None None None Reset module to power-up state Open
Chapter 5