Compatibility of IEC 104 (interoperability)

Standard

This application-based standard specifies sets of parameters and alternatives from which subsets must be selected for creating a single telecontrol system. Some parameters, such as the number of COMMON ASDU ADDRESS octets, are mutually exclusive. This means that only one quantity of the specified parameters is allowed per system. Other parameters, such as the listed sets with different process information in control and monitor direction, allow you to specify the total size or subsets required for the given application. The parameters of the above standard are combined in this section in order to allow suitable selection for a special application. If a system is made up of multiple system components from different manufacturers, it is necessary for all partners to agree to the selected parameters.

The compatibility list corresponds to the list in IEC 60870-5-101 and has been supplemented with the parameters used in this standard (=WinCC OA). The text descriptions of parameters that do not apply to the standard are crossed out (the check box is black).

The complete specification of a system may also require individual selection of certain parameters for certain system components, e.g. individual selection of scaling factors for individually addressable readings.

The selected parameters are filled out in the white squares as follows:

Function or ASDU is not used

Function or ASDU is used in standard direction

Function or ASDU is used in reverse direction

Function or ASDU is used in standard direction and reverse direction

The possible selection (empty, X, R or B) is specified for each specific agreement or parameter. The black check box indicates that the option cannot be used for a company standard.

System or device

(system-specific parameter; specifies system or station function by adding an "X" to one of the two following squares)

System Definition

Controlling Station (Master)

Controlled Station (Slave)

Network configuration

(network-specific parameter; specifies all configurations used with "X")

Point-to-Point Multipoint

Multiple Point-to-Point Multipoint Star

Physical layer

(network-specific parameter; specifies all interfaces and data rates used with "X")

Transmission speed (control direction)

Unbalanced interchange circuit V.24/V.28 Standard	Unbalanced interchange circuit V.24/V.28 Recommended if > 1 200 bits/s	Balanced interchange circuit X.24/X.27
100 bit/s	2400 bit/s	2400 bit/s
200 bit/s	4800 bit/s	4800 bit/s
300 bit/s	9600 bit/s	9600 bit/s
600 bit/s		19200 bit/s
1200 bit/s		38 400 bit/s
		56000 bit/s
		64000 bit/s

Transmission speed (monitor direction)

Unbalanced interchange circuit V.24/V.28 Standard	Unbalanced interchange circuit V.24/V.28 Recommended if > 1 200 bits/s	Balanced interchange circuit X.24/X.27
100 bit/s	2400 bit/s	2400 bit/s
200 bit/s	4800 bit/s	4800 bit/s
300 bit/s	9600 bit/s	9600 bit/s
600 bit/s		19200 bit/s
1200 bit/s		38 400 bit/s
		56000 bit/s
		64000 bit/s

Link layer

(network-specific parameter; specifies all options used with "X" and specifies the maximum user data octets. If a non-standard allocation of class-2 messages is implemented for multi-point traffic, the type identifications and causes of transmission of all class-2 messages must be specified).

Exclusive frame format FT 1.2, single character 1 and constant time monitoring interval are used in this companion standard.

Link transmission procedure	Address field of the link
Balanced transmission	not present (balanced transmission only)
Unbalanced transmission	One Octet
Frame length	2 Octets
Maximum length L (number of octets)	Structured

When using an unbalanced link layer (multi-point traffic), the following ASDU types are returned in class 2 messages (low priority) with the indicated causes of transmission.

The standard assignment of ASDUs to class-2 messages is used as follows

A special assignment of ASDUs to class-2 messages is used as follows

Comment: As a response to a request for class-2 data, a controlled station may send class-1 data if no class-2 data are available.

Application layer

Transmission mode for application data

Mode 1 (least significant octet first), as defined in Clause 4.10 of IEC 870-5-4, is

used exclusively in this companion standard.

Common address of ASDU

(system-specific parameter; specifies all options used with "X")

OneOctet

Two Octets

Information object address

(system-specific parameter; specifies all options used with "X")

One Octet	Structured
Two Octets	Unstructured
Three Octets

Cause of transmission

(system-specific parameter; specifies all options used with "X")

One Octet

Two Octets

Length of APDU

(system-specific parameter; specifies all options used with "X")

The maximum length of the APDU ("application protocol data unit", see standards) is 253 (default). The maximum length may be reduced by the system.

Maximum length of APDU per system

Selection of standard ASDUs

Process information in monitor direction

(station-specific parameter; specifies all type identifications used either with "X" (if used in standard direction) or "R" (if used in reverse direction) or "B" (if used in both directions).

	<1>:= Single-point information	M_SP_NA_1
	<2>:=Single-point information with time tag	M_SP_TA_1
	<3>:= Double-point information	M_SP_TA_1
	<4>:= Double-point information with time tag	M_DP_TA_1
	<5>:= Step position information	M_ST_NA_1
	<4>:= Step position information with time tag	M_ST_TA_1
	<7>:= Bitstring of 32 bits	M_BO_NA_1:
	<8>:= Bitstring of 32 bits with time tag	M_BO_TA_1
	<9>:= Measured value, normalized value	M_ME_NA_1
	<10>:= Measured value, normalized value with time tag	M_ME_TA_1
	<11>:= Measured value, scaled value	M_ME_NB_1
	<12>:= Measured value, scaled value with time tag	M_ME_TB_1
	<13>:= Measured value, short floating point value	M_ME_NC_1
	<14>:= Measured value, short floating point value with time tag	M_ME_TC_1
	<15>:= Integrated totals	M_IT_NA_1
	<16>:= Integrated totals with time tag	M_IT_TA_1
	<17>:= Event of protection equipment with time tag	M_EP_TA_1
	<18>:= Packed start events of protection equipment with time tag	M_EP_TB_1
	<19>:= Packed output circuit information of protection equipment with time tag	M_EP_TC_1
	<20>:= Packed single-point information with status change detection	M_SP_NA_1
	<21>:= Measured value, normalized value without quality descriptor	M_ME_ND_1
	<30>:= Single-point information with time tag CP56Time2a	M_SP_TB_1
	<31>:= Double-point information with time tag CP56Time2a	M_DP_TB_1
	<32>:= Step position information with time tag CP56Time2a	M_ST_TB_1
	<33>:= Bitstring of 32 bits with time tag CP56Time2a	M_BO_TB_1
	<34>:= Measured value, normalized value with time tag CP56Time2a	M_ME_TD_1
	<35>:= Measured value, scaled value with time tag CP56Time2a	M_ME_TE_1
	<36>:= Measured value, short floating point value with time tag CP56Time2a	M_ME_TF_1
	<37>:= Integrated totals with time tag CP56Time2a	M_IT_TB_1
	<38>:= Event of protection equipment with time tag CP56Time2a	M_EP_TD_1
	<39>:= Packed start events of protection equipment with time tag CP56Time2a	M_EP_TE_1
	<40>:= Packed output circuit information with time tag CP56Time2a	M_EP_TF_1

Either the ASDUs of the set <2,4,6,8,10,12,14,16,17,18,19> or of the set <30> to <40> are used.

• no time tag - the time tag is completely added by the driver

• short time tag (CP24Time2a = minute/second/millisecond) - the driver adds year, month, day and hour from the computer time.

• long time tag (CP56Time2a = year/month/day/hour/minute/second/millisecond) - the driver takes the complete time tag from the telegram.

Depending on the telegram type different time tags are transmitted. There are three different ways to which the driver reacts in the following way:

For IEC 104, <30-40> are used according to the standard; for IEC 101 <2,4,6,8,10,12,14,16,17,18,19> (see Compatibility IEC101)

Process information in control direction

(station-specific parameter; specifies all type identifications used either with "X" (if used in standard direction) or "R" (if used in reverse direction) or "B" (if used in both directions).

	<45>:= Single command	C_SC_NA_1
	<46> := Double command	C_DC_NA_1
	<47>:= Regulating step command	C_RC_NA_1
	<48> := Set point command, normalized value	C_SE_NA_1
	<49>:= Set point command, scaled value	C_SE_NB_1
	<50> := Set point command, short floating point value	C_SE_NC_1
	<51>:= Bitstring of 32 bits	C_BO_NA_1
	<58>:= Single command with time tag CP56Time2a	C_SC_TA_1
	<59>:= Double command with time tag CP56Time2a	C_DC_TA_1
	<60>:= Regulating step command with time tag CP56Time2a	C_RC_TA_1
	<61> := Set point command, normalized value with time tag CP56Time2a	C_SE_TA_1
	<62> := Set point command, scaled value with time tag CP56Time2a	C_SE_TB_1
	<63> := Set point command, short floating point value with time tag CP56Time2a	C_SE_TC_1
	<64> := Bitstring of 32 bits with time tag CP56Time2a	C_BO_TA_1

Either the ASDUs of set <45> to <51> or of the set <58> to <64> are used.

System information in monitor direction

(station-specific parameter; "X" if used)

<70>:= End of initialization

C_SC_NA_1

System information in control direction

(station-specific parameter; specifies all type identifications used either with "X" (if used in standard direction) or "R" (if used in reverse direction) or "B" (if used in both directions))

	<100>:= Interrogation command	C_IC_NA_1
	<100> := Counter interrogation command	C_CI_NA_1
	<102>:= Read command	C_RD_NA_1
	<103> := Clock synchronization command	C_CS_NA_1
	<104>:= Test command	C_TS_NA_1
	<105> := Reset process command	C_RP_NA_1
	<106>:= Delay acquisition command	C_CD_NA_1
	<107>:= Test command with time tag CP56Time2a	C_TS_TA_1

Parameter in control direction

(station-specific parameter; specifies all type identifications used either with "X" (if used in standard direction) or "R" (if used in reverse direction) or "B" (if used in both directions)).

	<110>:= Parameter of measured value, normalized value	P_ME_NA_1
	<111>:= Parameter of measured value, scaled value	P_ME_NB_1
	<112>:= Parameter of measured value, short floating point value	P_ME_NC_1
	<113>:= Parameter activation	P_AC_NA_1

File transfer

(station-specific parameter; specifies all type identifications used either with "X" (if used in standard direction) or "R" (if used in reverse direction) or "B" (if used in both directions)). Detailed information on the IEC file transfer functionality you will find in the IEC file transfer section of this documentation.

	<120>:= File ready	F_FR_NA_1
	<121>:= Section ready	F_SR_NA_1
	<122>:= Call directory, select file, call file, call section	F_SC_NA_1
	<123>:= Last section, last segment	F_LS_NA_1
	<124>:= Ack file, ck section	F_AF_NA_1
	<125>:= Segment	F_SG_NA_1
	<126>:= Directory (blank or X; available only in monitor [standard] direction)	F_DR_TA_1

Type identifier and cause of transmission assignments

(station-specific parameters)

Shaded box = combination of type identification and cause of transmission not provided in the application-specific standard.

Black box: combination of type identification and cause of transmission not allowed in the application-specific standard.

Blank box = combination of type identification and cause of transmission not used.

Combinations of type identifier and cause of transmission:

'X' if only used in standard direction

'R' if used in reverse direction

'B' if used in both directions

Basic application functions

Station initialization

(station-specific parameter; "X" if used)

Remote initialization

Cyclic data transmission

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions).

Cyclic data transmission

Read procedure

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions).

Read procedure

Spontaneous transmission

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions).

Spontaneous transmission

Double transmission of information objects with cause of transmission spontaneous

(station-specific parameter; specifies "X" for information objects, triggered by a single state change, that are transmitted both with the type identification without time information and with the appropriate type identification with time information)

The following type identifications may be transmitted in succession caused by a single status change of an information object. The particular information object addresses for which double transmission is enabled are defined in a project-specific list.

	Single-point information M_SP_NA_1, M_SP_TA_1, M_SP_TB_1 and M_PS_NA_1
	Double-point information M_DP_NA_1, M_DP_TA_1 and M_DP_TB_1
	Step position information M_ST_NA_1, M_ST_TA_1 and M_ST_TB_1
	Bitstring of 32 bits M_BO_NA_1, M_BO_TA_1 and M_BO_TB_1 (if defined for a specific project)
	Measured value, normalized value M_ME_NA_1, M_ME_TA_1, M_ME_ND_1 and M_ME_TD_1
	Measured value, scaled value M_ME_NB_1, M_ME_TB_1 and M_ME_TE_1
	Measured value, short floating point value M_ME_NC_1, M_ME_TC_1 and M_ME_TF_1

Station interrogation

(station-specific parameter; "X" if used in standard direction or "R" if used in reverse direction or "B" if used in both directions)

Global
Group 1	Group 7	Group 13
Group 2	Group 8	Group 14
Group 3	Group 9	Group 15
Group 4	Group 10	Group 16
Group 5	Group 11	The information object addresses per group must be specified in a separate table .
Group 6	Group 12

Clock synchronization

(station-specific parameter; "X" if used in standard direction or "R" if used in reverse direction or "B" if used in both directions)

Clock synchronization

optional

Command transmission

(object-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions)

	Direct command transmission
	Direct setpoint command transmission
	Select and execute command
	Select and execute setpoint command
	C_SE ACTTERM used
	No additional definition
	Short pulse duration (duration determined by system parameter in the outstation.)
	Long pulse duration (duration determined by system parameter in the outstation.)
	Persistent output
	Supervision of maximum delay in command direction of commands and setpoint commands
	Maximum allowable delay of commands and setpoint commands

Transmission of integrated totals

(object-specific parameter; "X" if used in standard direction

or "R" if used in reverse direction or "B" if used in both directions

).

	Mode A: Local freeze with spontaneous transmission
	Mode B: Local freeze with counter interrogation
	Mode C : Freeze and transmit by counter-interrogation commands
	Mode D: Freeze by counter-interrogation command, frozen values reported simultaneously
	Counter read
	Counter freeze without reset
	Counter freeze with reset
	Counter reset
	General request counter
	Request counter group 1
	Request counter group 2
	Request counter group 3
	Request counter group 4

Parameter loading

(object-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions).

	Threshold value
	Smoothing factor
	Low limit for transmission of measured values
	High limit for transmission of measured values

Parameter activation

(object-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions).

Activation/deactivation of persistent cyclic or periodic transmission of the addressed object

Test procedure

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions)

Test procedure

File transfer

(system-specific parameter; specifies the function used with "X")

File transfer in monitor direction

	Transparent file
	Transmission of disturbance data of protection equipment
	Transmission of sequences of events
	Transmission of sequences of recorded analog values

File transfer in control direction

Transparent file

Background scan

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions)

Background scan

Acquisition of transmission delay

(station-specific parameter; "X" if used in standard direction or "R"

if used in reverse direction or "B" if used in both directions)

Acquisition of transmission delay

Definition of time outs

Maximum range of values for all time outs: 1 to 255 s, accuracy 1 s

Maximum number of outstanding I-format APDUs k and latest acknowledge w

Maximum range of values k: 1 to 32767 (215 - 1) APDUs, accuracy 1 APDU

Maximum range of values k: 1 to 32767 APDUs, accuracy 1 APDU (Recommendation: w should not exceed 2/3 of k)

Portnumber

RFC 2200 suite

RFC 2200 is an official Internet Standard which describes the state of standardization of protocols used in the Internet as determined by the Internet Architecture Board (IAB). It offers a broad spectrum of actual standards used in the Internet. The suitable selection of documents from RFC 2200 defined in this standard for given projects has to be chosen by the user of this standard.

	Ethernet 802.3
	Serial X.21 interface
	Other selection(s) from RFC 2200

List of valid documents from RFC 2200

1. ....................................................................

2. ....................................................................

3. ....................................................................

4. ....................................................................

5. ............................................... .....................

6. ....................................................................

7. etc.