MKS Baratron DMA Series - Identity Object; Identity Object Instance Attributes

7BChapter Four: Operation 71BIdentity Object
53
Identity Object
The Identity Object (Class Code 01
hex
) provides general information about the device as defined
in the ODVA “DeviceNet Specification,” Volume II [2].
One instance of the Identity Object is supported with seven instance attributes (Table 20) and
three DeviceNet common services (Table 21, page 54).
Identity Object Instance Attributes
Table 20: Identity Object Instance Attributes
Attribute
ID # (hex) Description
Data
Type
User
Mode
Access
Cal
Mode
Access
Non-
Volatile
Memory
Data
Variable
Factory
Default
Setting
01 Vendor UINT R R N none 36
02 Device Type* UINT R R N none 28
03 Product Code* UINT R R Y none 3
04 Revision* Struct of:
USINT
USINT
R R N none current
firmware
revision
05 Status* WORD R R N none 0
06 Serial Number* UDINT R R Y none 0
07 Product Name* SHORT-
STRING
R R N none CM
* This information also is available—in a different format—in the S-Device Supervisor Object (see page
74, for more information).
Vendor
Attribute ID #01 reports the registered vendor supplying the device. MKS Instruments is
identified as Vendor #36 (24
hex
).
Device Type
Attribute ID #02 reports the type of device on the network in accordance with the ODVA
“DeviceNet Specification,” Volume
II [2]. The DMA transducer is represented in the response
with the value “28,” a pressure/vacuum gauge.
Product Code
Attribute ID #03 reports the product code as “3” in accordance with the ODVA “DeviceNet
Specification,” Volum
e II [2]
.
Revision
Attribute ID #04 reports the current revision of firmware in accordance with the ODVA
“DeviceNet Specification,” Volume
II [2].
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