ProSoft Technology PTQ-104C - Manual (Page 120)

Reference 49TPTQ-104C ♦ 48TQuantum Platform
12TUser Manual 47TIEC 60870-5-104 Client
Common Address of ASDU
(System-specific parameter)
 One octet  Two octets
Information object address
(System-specific parameter)
 One octet
 Structured
 Two octets  Unstructured
 Three octets
Cause of transmission
(System-specific parameter)
 One octet  Two octets (with originator address)
Length of APDU
(System-specific parameter, specify the maximum length of the APDU per
system)
The Maximum length of the APDU is 253 (default). The maximum length may be
reduced by the system.
Maximum length of 253 per APDU system
9.6.3 Selection of standard ASDUs
Process information in monitor direction
(Station-specific parameter; mark each Type ID "X" if it is only used in the
standard direction, "R" if only used in the reverse direction, and "B" if used in
both directions)
Type ID Description Type
 <1> Single-point information M_SP_NA_1
 <2> Single-point information with time tag M_SP_TA_1
 <3> Double-point information M_DP_NA_1
 <4> Double-point information with time tag M_DP_TA_1
 <5> Step position information M_ST_NA_1
 <6> Step position information with time tag M_ST_TA_1
 <7> Bitstring of 32 bit M_BO_NA_1
 <8> Bitstring of 32 bit 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_I
Page 120 of 136 ProSoft Technology, Inc.
March 4, 2013