OPC DataHub Command Set

Table of Contents

acksuccess - tells the DataHub to return success messages.

add - adds a value to a point.

alias - creates an alias point for an existing point.

alive - tells the Cascade DataHub that the client is running.

append - appends a string to the value of a point.

assembly - creates an assembly.

asyncsocket - sets up asynchronous communication on a socket.

attribute - creates an attribute.

auth - requests authentication for a client.

authgroup - creates a new authentication group.

authuser - creates a new user.

auto_create_domains - automatically adds domains requested by clients.

auto_timestamp - adds timestamps to unstamped changes.

bridge - creates a bridge between two points.

bridge_remove - deletes a bridge.

bridge_remove_pattern - deletes all bridges that match a pattern.

bridge_transform - modifies an existing bridge.

cforce - creates a point and forces a value to be written to it.

cread - creates and reads a point.

create - creates a new point.

create_domain - creates a new domain.

creport - creates a point and requests notification of changes.

cset - creates a point and assigns it a value.

cwrite - creates a point and writes information to it.

DDEAdvise - sets up the item for a DDEAdvise connection.

DDEConnect - makes a connection to a DDE service and topic.

DDEDisconnect - disconnects and discards a DDE connection.

DDEInit - initializes the DataHub to act as a DDE server.

DDEService - assigns a DDE service name.

DDEUnadvise - removes an item from a DDE connection.

DDEUnadvisePattern - removes multiple items from a DDE connection.

DDEUnadvisePoint - removes an item from a DDE connection, by its point name.

debug - sets the debug level.

defaultprop - sets a default type for a property.

delete - deletes a point—use with caution.

deleted - checks if a point has been deleted.

div - does division on the value of a point.

domain - identifies the client domain name.

domains - lists all domains in the DataHub.

dump - writes the entire content of the DataHub to a file.

enable_bridging - enables or disables bridging capabilities

enable_dde_client - enables or disables DDE client capabilities.

enable_dde_server - enables or disables DDE server capabilities.

enable_mirror_master - enables or disables mirror master capabilities.

enable_mirror_slave - enables or disables mirror slave capabilities.

enable_opc_client - enables or disables OPC client capabilities.

enable_opc_server - enables or disables OPC server capabilities.

enable_scripting - enables or disables scripting capabilities

enable_tcp_server - enables or disables TCP server capabilities.

error - sends an error with an error string.

execute_plugin - executes a plugin. (experimental)

exit - shuts down the DataHub.

flush - flushes output to a terminal (Linux).

flush_log - forces an immediate update of the Script Log (Windows).

force - forces a write to a point.

format - is an efficiency enhancement for Linux.

heartbeat - establishes a heartbeat message.

ignore - ignores a given point.

ignore_old_data - ignores changes with an old timestamp.

include - includes a file in with configuration files.

instance - creates an instance of a data organization model.

load_config_files - loads configuration files.

load_plugin - loads a specified plugin. (experimental)

load_scripts - loads scripts.

lock - locks and unlocks points.

log_file - sets up a log file.

log_to_file - starts or stops logging to a file.

mirror_master - sets up a tunnelling (mirroring) master.

mirror_master_2 - sets up a secure tunnelling (mirroring) master.

mult - multiplies the value of a point.

OPCActivate - activates or deactivates an OPC group.

OPCAddItem - adds OPC items to a connection.

OPCApply - applies changes to an outgoing connection.

OPCAttach2 - sets up an OPC connection.

OPCConnect - connects or disconnects from the OPC server.

OPCDetach - removes an outgoing OPC connection.

OPCEnable - enables or disables outgoing OPC connections.

OPCEnableClient - enables or disables all OPC clients.

OPCEnableServer - enables or disables DataHub OPC server behavior.

OPCMinimumSecurity - overrides DCOM security settings.

OPCModify - modifies an existing OPC connection.

OPCRefresh - sends a Refresh2 command to the OPC server.

OPCReload - reloads the data set from an OPC server.

OPCRemoveItem - removes an item based on its OPC DataHub point name.

private_attribute - creates a private attribute.

property - creates a property for an assembly.

quality - assigns a quality to a point.

read - reads a complete point definition.

report - requests notification of changes to a data point.

report_domain - registers points and requests information on a whole domain.

report_errors - controls the reporting of errors.

request_initial_data - gets current data when client connection is made.

save_config - forces the DataHub to save its configuration.

secure - adjusts the security level of a point.

set - sets the value of a point.

set_canonical - sets the type of a point.

show_data - displays the Data Browser.

show_debug_messages - show or hide debugging messages in the Data Browser.

show_event_log - displays the Event Log.

show_icon - displays the system tray icon.

show_properties - displays the Properties window.

show_script_log - displays the Script Log.

subassembly - creates a subassembly.

success - sets up a success message.

tcp_service - sets a TCP service name or port number for incoming slave connections.

timeout - suspends data flow.

transmit_insignificant - permits transmission of insignificant changes.

type - creates a type.

unload_plugin - unloads a plugin. (experimental)

unreport - allows a client to stop receiving data value changes to a point.

version - returns the current version number.

write - writes information to a point.