| Full name | Meaning | Unit | Default value |
|---|
| Command Confirm | Confirmation of control ASDUs.
If CMDC=0, the D2000 KOM process is not waiting for confirmation of control ASDUs from the partner station using a reply ASDU with a different CauseOfTransmission. The ASDU is considered to be confirmed when a packet containing the corresponding ReceiveSequenceNumber is received.
If CMDC=1, the D2000 KOM process is waiting for confirmation with CauseOfTransmission=7 (Activation Confirmation).
If CMDC=2, the D2000 KOM process is waiting for confirmation with CauseOfTransmission=10 (Activation Termination).
If CMDC=3, the D2000 KOM process is waiting for confirmation with CauseOfTransmission=7 or 10 (if both of them are received, just the first of them is taken into account).
Having received the corresponding confirmation means that writing is finished (the Transient attribute of written value is cleared and the WTn timer is reset).
If a confirmation is received with a different CauseOfTransmission from the one that the D2000 KOM process is expecting, it will be ignored.
Writing is successful if the received ASDU contains the P/N bit set to 0. Otherwise, writing is unsuccessful.
The value from a received ASDU is written into the corresponding I/O tag and it is sent to the system. E.g. if an ASDU of type 50 (short floating point) with the value of 1200.0 is sent and the partner station sends an ASDU of type 50 as a reply, P/N bit=0, the value of 999.0 (e.g. due to physical limitations of the given parameter), then this value will be sent to the system by the D2000 KOM process. | - | 3 |
| Debug Input | A mask for a debug level of the input data. Meaning of individual bits:- 0. bit - information about the number of points received within General Interrogation
- 1. bit - information about received values of I/O tags
- 2. bit - balanced mode: information about received Interrogation command
- 3. bit - information about discarded values due to the setting of the Ignore Flagged parameter
| 0 .. 255 | 0 |
| Debug Output | A mask for a debug level of the output data. Meaning of individual bits:
- 0.bit - balanced mode: information about the number of points sent within General Interrogation
- 1.bit - information about sent values of I/O tags
| 0 .. 255 | 0 |
| It allows a flag mapping that is compatible with the Sinaut Spectrum ICCP OPC communication. For more information see ICCP compatible flag mapping. | YES/NO | NO |
| The parameter allows specifying the flags of values (data ASDUs 1-40), which - if set - will cause the incoming value to be discarded. The parameter was implemented when it was necessary to filter out the "Non-topical" flag values that came from the communication partner. The mapping of individual flags from ASDU to A..H flags is as follows: - A - Overflow (OV) - ASDU 5-14, 20, 32-36
- B - no mapping (according to standard this bit should be 0)
- C - no mapping (according to standard this bit should be 0)
- D - Elapsed Time Invalid (EI): ASDU 17-19, 38-40
- E - Blocked (BL) - ASDU 1-14, 17-20, 30-36, 38-40
- F - Substituted (SB) - ASDU 1-14, 17-20, 30-36; Counter overflow (CY) - ASDU 15, 16, 37
- G - Non-topical (NT) - ASDU 1-14, 17-20, 30-36; Counter adjusted (CA) - ASDU 15, 16, 37
- H - Invalid (IV) - ASDU 1-20, 30-40
| A..H | - |
| Ignore Unknown Addresses | If this parameter is set to True, the D2000 KOM process will not report an error (display an error on its console or write it into the line log file) in case that incoming value has an address which that does not match any of the addresses of I/O tags defined in the D2000 system. | - | False |
| Interrogation Covers Counter Interrogation | As a reply to Interrogation, also values of I/O tags configured as ASDUs 15,16,37 (Integrated Totals) will be sent, which are usually requested by ASDU 101 [Counter Interrogation]. | - | True |
| K (max outstanding I APDUs) | Sending window size i.e. number of packets, which are sent by the D2000 KOM process without receiving a confirmation (S-frame or I-frame). According to the standard, the default value is 12. | - | 12 |
| No Flags | If the parameter is True, then the status byte of incoming ASDUs is ignored and not saved into the flags A...H. Flags of output I/O tags are also ignored and they not written to the status byte. | - | False |
| The order for sending of sending ASDU 101 [Counter Interrogation Command] when the station starts to communicate or when a new station is created. If OCIC<OIC, ASDU 101 will be sent before ASDU 100. If OCIC=0, ASDU 101 will not be sent. The parameter can be set separately for each station. | - | 0 |
| The order for sending ASDU 100 [Interrogation Command] when the station starts to communicate or when a new station is created. If OIC<OCIC, ASDU 100 will be sent before ASDU 101. If OIC=0, ASDU 100 will not be sent. The parameter can be set separately for each station. | - | 1 |
| A number of repetitions, after which the IP address not responding to ping is to be known as non-functional.
See the parameter Ping TimeOut. | - | 3 |
| Ping TimeOut | If the parameter is non-zero, it defines the timeout (in milliseconds) of a server response to a ping (ICMP echo) packet. In the background, the D2000 KOM process sends ping packets to all four configured IP addresses. If an IP address repeatedly does not respond respond for Ping Count-times, it is marked as non-functional and the connection is terminated. If the parameter PTO=0, sending ping packets to IP addresses is disabled. | - | 0 |
| Post Start Delay | When the connection is being established, this parameter defines the delay between receiving StartDT Con response and sending Interrogation Command and/or Counter Interrogation Command. | ms | 0 |
| Initial SSN. According to the standard, after establishing the connection the SSN is set to 0, values other than zero could be used e.g. for testing. | - | 0 |
| Server Port, Server Host | The port number and IP address of the interface where the D2000 KOM process should listen (in a listening mode). If both parameters are defined, the D2000 KOM process works as passive (it is waiting for connecting Sinaut clients). If the process should listen on all network interfaces, Server Host must be set to ALL or *. | - |
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| Standby Keep Open | If this parameter is set to True, the connection to the partners will not be closed when the status of the D2000 Server process (the process D2000 KOM is connected to) is changed from Hot to Standby state (in a redundant D2000 system). | - | True |
| Station Communication Error | The number of unsuccessful attempts to connect, after which the station status is changed into the St_CommErr state. For redundant lines, the communication must fail on both TCP connections. | - | 2 |
| Station Hard Error | The number of unsuccessful attempts to connect after a communication error, after which the station status is changed into the St_HardErr state. For redundant lines, the communication must fail on both TCP connections. | - | 5 |
| Strict Redundancy Connection Signalisation | The number of TCP connections, which must be opened so that the line could be considered as OK. There are 4 connections (2x Sinaut servers, each of them has 2 network addresses). | - | 4 |
| Tcp Keep Init | The parameter is implemented for OpenVMS platforms only. If it is other than zero, then defines the timeout (in seconds) for opening a new connection to the server. For OpenVMS, the default value is 75 seconds, for Windows, it is 20 seconds. | - | 0 |
| TCP NoDelay | TND parameter sets a low-level parameter of TCP_NODELAY sockets which disables a default TCP packet coalescing. |
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| W (ack after receiving W APDUs) | The number of received packets, after which the D2000 KOM process sends an S-frame confirmation. According to the standard, the default value is 8. It must be true that W < K, the standard recommends W = 2/3 * K. | - | 8 |
| Wait Timeout T1 | The timeout for receiving a confirmation of a sent I-frame (either a confirmation within a received I-frame or an individual S-frame is expected) or a sent U-frame. If the D2000 KOM process does not receive the confirmation within WT1 limit, it closes the TCP connection. According to the standard, the default value of WT1 is 15000 ms. | ms | 15 000 |
| Wait Timeout T2 | The timeout for sending a confirmation of a received I-frame. WT2 < WT1. If another I-frame (which confirms the received I-frame) is not sent within the WT2 limit since the I-frame was received, then the D2000 KOM process sends an S-frame confirming the received I-frame to the partner. According to the standard, the default value of WT2 is 10000 ms. | ms | 10 000 |
| Wait Timeout T3 | The timeout for sending test frames (U-frame TEST ACT). If no data are sent in any direction for a longer time than WT3, a TEST ACT U-frame will be sent by the D2000 KOM process and a U-frame TEST CON is expected (within the WT1 time limit). If the partner's WT3 is set to a lower value, it sends the test frames and the D2000 KOM process replies to them. According to the standard, the default value of WT3 is 20000 ms. Setting the value to 0 disables sending test frames. | ms | 20 000 |
| Wait Timeout N | The timeout for receiving the confirmation of a sent value. Receiving e.g. S-frame with RSN (Receive Sequence Number) confirming that the other party received the previous I-frame doesn't mean that the I-frame was processed. Within the WTn time limit, the D2000 KOM process expects a response (e.g. after sending ASDU with TypeIdentificator=45 [Single Command] with CauseOfTransmission=6 [Activation] it expects to receive a Single Command with CauseOfTransmission=7 [Activation Confirmation].
After the expiration of the WTn timeout, the D2000 KOM process closes the TCP connection. | ms | 60 000 |