ProSoft Technology PTQ-PDPMV1 User Manual

Page 202

Hot Standby Support

PTQ-PDPMV1 ♦ Quantum Platform

User Manual

PROFIBUS DP Master Network Interface Module for Quantum

Page 202 of 306

ProSoft Technology, Inc.

August 12, 2014

Quantum
Address
(Example)

Unity
Address
(Example)

Word
Offset

Name

Description

1060

%IW1060

Low byte: HSBY
Remote Status -
from PROFIBUS
interface
High byte: HSBY
Remote number of
slaves - from
PROFIBUS
interface

High Byte

Low Byte

-
-

O
D

D
B

C
E

S
O

P
A

Bit

Explanation

This bit would indicate the state of the local
Master.
0 - Local (active) Master (controlled by the
Primary PLC)
1 - Remote (passive) Master (controlled by
the Standby PLC)

This bit indicates if the local Master
recognizes any of its assigned slaves as
offline.
0 - At least one slave is offline
1 - All slaves OK

This bit indicates if the local Master has
recognized a critical error.
0 - No critical errors
1 - Critical error active
This bit is set when problems with the ping
sequence is encountered.

This bit indicates if the local Master has
detected a database mismatch.
0 - Database OK
1 - Database mismatch

This bit indicates when the data in the
Output data area of the DPRAM is updated
after a switchover.
0 - Output data is not updated
1 - Output data is updated (Once this bit is
set, it remains set for the remaining session
until the Anybus is either reset or HSBY
state changes to "Not Connected")

Not used; set to zero

COM This bit indicates if the counterpart is

present.
0 = Counterpart not present
1 = Counterpart is present