ProSoft Technology MVI56-101S - Manual (Page 171)

MVI56-101S ♦ ControlLogix Platform IEC 60870-5-101 Slave Interoperability Statement
IEC 60870-5-101 Slave Communication Module User Manual
ProSoft Technology, Inc. Page 171 of 193
August 2, 2011
6.5 Application Layer
6.5.1 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.
6.5.2 Common Address of ASDU - 101S
(System-specific parameter)
 One octet  Two octets
6.5.3 Information Object Address
(System-specific parameter)
One octet  Structured
Two octets
 Unstructured
 Three octets
6.5.4 Cause of Transmission
(System-specific parameter)
 One octet  Two octets (with originator address)
6.5.5 Length of APDU - 101S
(System-specific parameter, specify the maximum length of the APDU per
system)
The maximum length of the APDU in this protocol implementation is 252
(default). The maximum length may be reduced by the system.
The maximum length of APDU per system is 255.