Internal data points of the IEC driver

_Iec

This is the internal DPT containing the data points _Iec_1, _Iec_2 and _Iec_3. The commands (general query, counter request, etc.) are sent to all connections. For each IEC driver there must be one of these DPs that the user must create, if it does not exist by default.

Element	Type	Meaning
Control.GQ	dyn_string	Writes GQ (general queries) to the specified addresses (1 per line). Format: <Common Address>.0.0.0 The parts of the format are filled with the desired addresses, e.g. 1.111.0.0.0 sends the GQ to Common Address (HB=1, LB=111), Information Object Address (HB=0, MB=0, LB=0)
Control.CounterRequest	dyn_string	Writes counter requests to the specified addresses. Format: <Common Address>.0.0.0
Control.EOI	dyn_string	Writes "End of Initialization" to the specified addresses. Format: <Common Address>.0.0.0
Control.ClockSync	dyn_string	Writes clock-sync telegrams to the specified addresses. Format: <Common Address>.0.0.0
Control.Test	dyn_string	Writes test telegrams to the specified addresses. Format: <Common Address>.0.0.0
Control.Reset	dyn_string	Writes reset telegrams to the specified addresses. Format: <Common Address>.0.0.0
Monitor.GQ	string	Monitor direction. Stores incoming GQs. Format: 100.<Common Address>.0.0.0 (or 100). 100 corresponds to the standards for the general query in monitor direction.
Monitor.CounterRequest	string	Received counter requests, format: 101.<Common Address>.0.0.0
Monitor.EOI	string	Received End-of-Init, format: 70.<Common Address>.0.0.0
Monitor.ClockSync	string	Received clock-sync. Format: 103.<Common Address>.0.0.0
Monitor.Test	string	Received test TG. Format: 107.<Common Address>.0.0.0
Monitor.Reset	string	Reset (string): Received reset TG. Format: 105.<Common Address>.0.0.0
FileTransfer.Command	string	File transfer command (see section IEC file transfer).
FileTransfer.Status	string	File transfer status (see section IEC file transfer).
Connections.All	dyn_string	Names of connections which are started at driver start-up.
Connections.Add	string	Name of connection which is loaded at runtime.

_IecConnection

The user must create a data point (type: _IecConnections) for each connection. This is done automatically on the IEC panel (see Panel for connections). Elements that only apply to IEC101 are on a white background:

Element	Type	Meaning
LocalList	dyn_string	Addresses of all stations from the local list only accessible via this connection. Format: "Common Address.Information Object Address". A value of "*" means "all values between 0 and 255". Use this option sparingly as it causes the driver to send the system telegrams to all possible stations that match this search pattern.
GlobalList	dyn_string	Addresses of all stations from the global list only accessible via this and other connections (redundant connections). Format etc. see "LocalList".
State	bool	TRUE if the driver has a connection to the host, else FALSE. This internal DPE has been enhanced to a separate node States. with the WinCC OA version 3.10, however, it remains for compatibility reasons.
SendNoReply	bool	Only for IEC 101: Specifies whether the driver should send an acknowledge to a reply (FALSE) or not (TRUE).
ConnectionType	bool	Not used
ConnectError	bool	Not used
Control.GQ	unsigned	Sends GQ to all nodes of this connection. Value is quality info*), 0 or 20 means "all groups". If the GQ should not be sent to all nodes of this connection, the GQ must be triggered using the _Iec.Control.GQ data point (the address of the related node is written on the DPE) or via a data point with the peripheral address 100.x.y.0.0.0.
Control.CounterRequest	unsigned	Sends counter request to all stations on this connection. Value is quality info, 0 or 20 means "all groups".
Control.EOI	unsigned	Sends EOI telegram to all stations on this connection. Value is the quality info.
Control.ClockSync	time	Sends clock-sync to all stations. Value is time, default 0: system time of sending.
Control.Test	unsigned	Test telegram to all stations on this connection. Value is quality info.
Control.Reset	unsigned	Reset telegram to all stations on this connection. Value is quality info.
Config.ConnInfo	dyn_string	Defines an IEC connection on a device. Replaces the config entries “connection” and “connection_101”. This entry (if available) has a higher weight than this from the config file (if available). Format for 104 (1 or more entries): 104 <host> <port> <timeout> <active> <active> Setting per connection 0 = connection inactive 1 = connection active Format for 101 (1 entry): 101 <devName> <101 link address>
Config.Active	bool	Indicates whether a connection is (not) active. FALSE = generally connection not active TRUE = generally connection active
Config.ForceActive	uint	Defines the selection of the connection in case of a redundancy switch. 0 = connection selection in the event of redundancy automatically >0 = connection with index X is used fixed for communication Note: Only relevant for IEC 104.
States.ConnState	uint	State of the connection. 0 = Communication error 1 = Communication OK and started 2 = Communication OK but not started yet 3 = Connection deactivated
States.AllConnStates	dyn_uint	State per connection from Config.ConnInfo. 0 = Error 1 = OK, active 2 = OK, inactive 3 = Deactivated

*) In this kind of system telegram, the quality info is not invalid, blocked, etc., but also controls. In a GQ, for example, the quality info is also the "GQ group". You can split the DPs in the PLC into groups and send a GQ to query either all groups (i.e. all values) or only specific groups, e.g. all traffic lights.

This information is sent along with the telegram as quality information. The GQ data point allows you, for example, to send an unsigned int, and defines the GQ group to query, i.e. the quality info. This works exactly the same way for the other system telegrams, counter request, reset, etc.

V 3.11 SP1