ProSoft Technology PTQ-101M - Manual (Page 164)

PTQ-101M ♦ Quantum Platform Reference
IEC 60870-5-101 Master Communication Module
Page 164 of 181 ProSoft Technology, Inc.
May 14, 2008
Standard Recommended if >1 200 bit/s
100 bit/s ⌧ 2400 bit/s ⌧ 2400 bit/s
56000 bit/s
200 bit/s ⌧ 4800 bit/s ⌧ 4800 bit/s
64000 bit/s
⌧ 300 bit/s ⌧ 9600 bit/s ⌧ 9600 bit/s
⌧ 600 bit/s ⌧ 19200 bit/s
⌧ 1200 bit/s ⌧ 38400 bit/s
Link Layer
(network-specific parameter)
Frame format FT 1.2, single character 1 and the fixed time out interval are used
exclusively in this companion standard.
Link transmission procedure Address field of link
⌧ Balanced transmission ⌧ Not present (balanced transmission only)
⌧ Unbalanced transmission ⌧ One octet
⌧ Two octets
⌧ Structured
Frame length ⌧ Unstructured
255 Maximum length L (number of octets)
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.
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)