IEC 870-5-104 Sinaut communication protocol

Supported device types and versions
Communication line configuration
Communication station configuration
Station protocol parameters
I/O tag configuration
Tell commands
Literature
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Supported device types and versions

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Picture: D2000 redundant system communicating with Sinaut redundant system in redundant network

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The picture above shown TCP connections - each process D2000 KOM(D2000 Hot, D2000 StandBy) with eachSinaut (Sinaut Hot, Sinaut StandBy)

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Note: The individual bites of the byte that inform us on quality (SIQ for ASDU 1,2,30; DIQ for ASDU 3,4,31; QDS for 5..14,20,32..36) are mapped to the flags FLA (0.bit),FLB (1.bit) ..FLH (7.bit).
For example:
for ASDU 4: FLA=DPI bit 0, FLB=DPI bit 1, FLC=0, FLD=0, FLE=BL bit, FLF=SB bit, FLG=NT bit,FLH=IV bit.
for ASDU 16: FLA..FLE Sequence number bity 0..4, FLF=CY bit, FLG=CA bit, FLH=IV bit

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When sending commands (ASDU 45-64), the value of 6 [Activation] is used as CauseOfTransmission. Expecting a response from the controlled station depends on the parameter CMDC. There are the following possibilities:

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• In the active mode, the process D2000 KOM connects to specified TCP ports. It sends to each of the ports an U-frame StartDT Act, and waits for StartDT Con as reply.
• In the passive mode, the process D2000 KOM waits on specified TCP port (see the parameters SP, SH). When the clients are connected, the process waits for an U-frame StartDT Act, and sends StartDT Con as reply.
• Further communication is completely symmetrical one. Both partners can send ASDU 100 [Interrogation Command] in order to read all current values and then the partners receive and sends changed values and commands.

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Forced sending Interrogation Command or Counter Interrogation Command: If a station is in the status, that it is not in the simulation mode and the communication is not disabled (the tab Parameters of object of Station type), the process D2000 KOM sends Interrogation Command and/or Counter Interrogation Command (see the parameters OIC, OCIC).

The protocol IEC870-5-104 Sinaut supports the balanced mode described in the communication protocol IEC 870-5-104 - it is server in part, so the rules of  server protocols are valid for it.

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• Communication line category: TCP/IP-TCP Redundant
• TCP parameters:
  • Host: string containing at most 80 characters – two comma-separated server IP addresses in the form of a.b.c.d
    In the active mode, they are the addresses of the server, where the process D2000 KOM is connecting to.
    In the passive mode (see the parameters SP, SH), they are the IP addresses of a client, which are accepted by the process D2000 KOM (if the client is connecting from other IP address, will be disconnected).
  • Port: TCP port number (0...65535)
    In the active mode, it is the server port, where the process D2000 KOM is connecting to.
    In the passive mode (see the parameters SP, SH), the parameter will be ignored (but must be set, e.g. to the value of 0).
  • Line number: is used as Originator ASDU address (1 byte, 0-255).

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• Communication protocol: IEC870-TCP Sinaut.
• Station address is a decimal number within the range of 0 až 65535, defines the ASDU address.
  For better orientation, station address may be defined in the form of ByteHI,ByteLO, i.e. address 2,1 is the same as 513 (2*256 + 1). See a note about ASDU address.

Note: The protocol supports sending long time stamps (CP56Time2a tag) in local time or UTC time with defined offset (see the parameter Use monotonic UTC time +).

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The defined parameters, except for Order of IC and Order of Counter IC, are valid for the entire line, i.e. they can be set only for one station on the line.

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• I/O tag address is mapped to Information object address, i.e. contains 3 bytes and must be within the interval of 0...16777215.
  For better orientation, I/O tag address may be defined in the form of ByteHI,ByteMIDDLE,ByteLO, i.e. address 1,2,3 is the same as 66051 (1*256*256 + 2*256 + 3). See a note about IOA address .
• Input I/O tags must have corresponding types (Ai, Ci, Di, Qi) for received ASDU, see the table 1.
• For particular type of output I/O tag (Ao, Dout, Co), it is necessary to set an type of ASDU that should be used, see the table 1 and table 2.
• It is possible to configure one input I/O tag and more output I/O tags on the same address, while the output I/O tags have different ASDUs. Example:
  • I/O tag M1, Di type, address 1,
  • I/O tag M2, Dout type, address 1, ASDU 1 (single-point information)
  • I/O tag M3, Dout type, address 1, ASDU 45 (single command)
  
  Configuration on partner's side:
  • I/O tag P1, Dout type, address 1, ASDU 1 (single-point information)
  • I/O tag P2, Di type, address 1
  
  Writing into the I/O tag P1 from the partner's side gives a new value to the I/O tagM1. Writings of the I/O tags M2, M3 gives a new value to the I/O tag P2on the partner's side.

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Tell commands

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Literature

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