IOServer Parameters

The Citect.ini file contains the following IOserver parameters:

• [IOServer]AlwaysCallStopChannel- Determines whether Plant SCADA calls the StopChannel() function for a driver.

• [IOServer]AlwaysCallStopUnit - Determines whether Plant SCADA calls the StopUnit function for a driver.

• [IOServer]AsyncConnect - Determines whether Plant SCADA will follow its default behavior and attempt to connect to all configured I/O servers on start-up.

• [IOServer]BlockWrites - Determines whether Plant SCADA will try to block optimize writes to I/O devices.

• [IOServer]CacheDebug - Enables/disables I/O Server cache debugging.

• [IOServer]CacheIgnoreDriver - Ignore the request from the protocol driver not to cache the remote I/O device.

• [IOServer]CacheOptMode - Reduces #COM when using dial-up or scheduled devices.

• [IOServer]CacheReadAhead - Determines whether Plant SCADA will use read ahead caching or not.

• [IOServer]CancelTimeout - Determines how long the I/O server will wait on a reply from a driver before giving up.

• [IOServer]CPU - Obsolete in version 7.0.

• [IOServer]DisableConnectivityPropertiesAndExtensions - Disables properties and tag extensions to improve the performance of the I/O servers.

• [IOServer]DebugLogTagHandshake - Enables detailed tag handshake logging.

• [IOServer]EnableEventQueue - Enables the event queue.

• [IOServer]HeartTime - The period at which the I/O Server sends out heartbeats (to the clients) on the status of each I/O device.

• [IOServer]HWAlarmOnDeviceDisable - Controls whether hardware alarms for disabled IO devices are displayed or suppressed.

• [IOServer]InitMsg - Determines whether communication information is displayed in the Kernel (at startup).

• [IOServer]LogTagHandshake - Enables basic tag handshake logging.

• [IOServer]MaxEventsDrop - Sets the number of events that are dropped when too many are queued.

• [IOServer]MaxEventsQueued - Sets the maximum number of events that can be queued.

• [IOServer]MaxTagHandshakeSize - Sets the maximum number of bytes a tag validation check requests during validation.

• [IOServer]MaxTimeInQueueMs - Sets the maximum time for which an event can be queued.

• [IOServer]Name - Obsolete in version 7.0.

• [IOServer]PeerServerConnectTimeOut - Defines how long an IOServer will attempt to connect to peer IOServers.

• [IOServer]Process - Obsolete in version 7.0.

• [IOServer]RedundancyDebug - Enables/disables I/O device redundancy debugging.

• [IOServer]SaveBackup - Obsolete in version 7.0.

• [IOServer]SaveFile - The indicative name and path of the local I/O device persistence cache files on an I/O Server.

• [IOServer]SaveNetwork - The UNC name of the Persistence Cache file on this I/O Server.

• [IOServer]SavePeriod - Obsolete in version 7.20.

• [IOServer]SaveTime - Obsolete in version 7.20.

• [IOServer]Server - Obsolete in version 7.0.

• [IOServer]StrictTagHandshake - Enforces that the I/O Server contains a matching OID for every OID on the client.

• [IOServer]TagAddressNoCase - Determines if case-sensitivity needs to be considered when validating tag addresses.

• [IOServer]WatchDog - Determines whether Plant SCADA periodically checks the communication connection to your standby I/O devices.

• [IOServer]WatchDogPrimary - Determines whether Plant SCADA periodically checks the communication connection to your primary I/O devices.

See Also

Parameter Categories

IOServer Process Parameters