Registry Key

Data Type

Default Value

Description

dbgON

REG_DWORD

0

Debug Flags for ASCII file debugging/diagnostic trace. 0 disables verbose debugging, 255 or &HFFFFFFFF (hexadecimal) is the highest level of debugging.

Description

REG_SZ

A description of the DM

FailOverMode

REG_DWORD

0

Reserved

ForceSyncReads

REG_DWORD

1

If set to 1, forces all values to be read from the OPC server using Synchronous reads

OPCServer

REG_SZ

127.0.0.1

IPv4 address of target OPC server.

OPCServer-B

REG_SZ

127.0.0.1

IPv4 address of backup target OPC server. Note that if no backup server exists, no IP address should be specified.

OPCSource

REG_SZ

Not Defined

Reserved

OPCUpdateRates

REG_MULTI_SZ

Not Defined

Update interval (in ms) for each of the groups. If left blank, each group receives the default update rate of 500ms. The updates are specified as:

GroupName : UpdateInterval

Notes:

Please see the Heartbeats topic for information related to implementing heart-beat style tags for OPC and the implications of the Update interval in these applications.

OPCWatchdog

REG_SZ

Not Defined

Enables (1) a watchdog to push DM-OPC specific communication watched events with the primary server into the OPC debug file.

OPCWatchdog-B

REG_SZ

Not Defined

Enables (1) a watchdog to push DM-OPC specific communication watched events with the backup server into the OPC debug file.

Reconfig

REG_DWORD

Forces an update reconfiguration of the DM. Used to synchronise the running configuration to the stored configuration.

ServerProgID

REG_SZ

idxrtdb.1

ProgID of the DB that is running the DM_OPC_SERVER on the primary server. By convention, the ProgID is the same as the name of the DB. 

ServerProgID-B

REG_SZ

idxrtdb.1

ProgID of the DB that is running the DM_OPC_SERVER on the backup OPC server. By convention, the ProgID is the same as the name of the DB. 

StartUpDelay

REG_DWORD

0

Set a start-up delay in seconds before the client begins trying to read values from the OPC server.

TimeStampAtSource

REG_DWORD

1

Specifies the use of timestamping with respect to the data source (1) or with respect to local client (0).

ReConnectDelay

REG_DWORD

0

Specifies the time, in milliseconds, that IDX will wait after a connection has failed before attempting to reconnect to the server or backup-server (if specified).