ProSoft Technology PTQ-104C - Manual (Page 119)

49TPTQ-104C ♦ 48TQuantum Platform Reference
47TIEC 60870-5-104 Client
12TUser Manual
Word Offset
in Block Data Field(s) Description
42 Queue First First index of message in queue
43 Queue Index Current index of message in queue
9.6 IEC 60870-5-104 Client Interoperability Statement
This companion standard presents sets of parameters and alternatives from
which subsets have to be selected to implement particular telecontrol systems.
Certain parameter values, such as the number of octets in the COMMON
ADDRESS of ASDUs represent mutually exclusive alternatives. Only one value
of the defined parameters is admitted per system.
Other parameters, such as the listed set of different process information in
command and in monitor direction allow the specification of the complete set or
subsets, as appropriate for given applications. This clause summarizes the
parameters of the previous clauses to facilitate a suitable selection for a specific
application. If a system is composed of equipment stemming from different
manufacturers it is necessary that all partners agree on the selected parameters.
Note: In addition, the full specification of a system may require individual selection of certain
parameters for certain parts of the system, such as the individual selection of scaling factors for
individually addressable measured values.
The selected parameters should be marked in the white boxes as follows:

Function or ASDU is not used
 Function or ASDU is used as standardized (default)
R Function or ASDU is used in reverse mode
B Function or ASDU is used in standard and reverse mode
The possible selection (blank, X, R, B) is specified for each specific clause or
parameter.
A black check box indicates that the option cannot be selected in this companion
standard.
9.6.1 System or device
 System definition
 Controlling station definition (Client)
 Controlled station definition (Server)
9.6.2 Application Layer
Transmission mode for application data
Mode 1 (Least significant octet first), as defined in clause 4.10 of IEC 60870-5-4,
is used exclusively in this companion standard.
ProSoft Technology, Inc. Page 119 of 136
March 4, 2013