Delta DVS-G928 series, User Manual

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A p p e n d i x B M O D B U S T C P M a p
C - 4 7
C_
Deferred
Transmissions
UDINT
Frames for which first transmission
attempt is delayed because the
medium is busy
Late Collisions UDINT
Number of times a collision is
detected later than 512 bit-times
into the transmission of a packet
Excessive
Collisions
UDINT
Frames for which transmission fails
due to excessive collisions
MAC Transmit
Errors
UDINT
Frames for which transmission fails
due to an internal MAC sublayer
transmit error
Carrier Sense
Errors
UDINT
Times that the carrier sense
condition was lost or never
asserted when attempting to
transmit a frame
Frame Too Long UDINT
Frames received that exceed the
maximum permitted frame size
MAC Receive
Errors
UDINT
Frames for which reception on an
interface fails due to an internal
MAC sublayer receive error
10 Get Interface Label SHORT_STRING Human readable identification
Common Services
Service
Code
Need in Implementation
Service name Description of Service
Class Instance
0x0E V V Get_Attribute_Single
Returns the contents of the
specified attribute.

Base Switch Object (0x51)
Class Attributes
Attr ID
Access
rule
Name Data type Description of attribute
1 Get Revision UINT
Revision of this object. The current
value assigned to this values is 1
Instance Attributes
Attr ID
Access
rule
Name Data type Description of attribute
1 Get
Device Up
Time
UDINT
Time since device was powered up
(s)
(Note: the value is 32-bit)
2 Get Total port count UDINT Number of physical ports
3 Get
System
Firmware
Version
SHORT_STRING
Human readable representation of
System Firmware Version (Note:
ASCII characters, max length is 32
bytes)
4 Get Power Source WORD
Status of switch power source
Bit 0-1: Power Source 1
Bit 2-3: Power Source 2….
Bit 14-15: Power Source 8
00=Not Present (power source not