
IEC 60870-5-101 Slave Interoperability Statement MVI56-101S ♦ ControlLogix Platform
User Manual IEC 60870-5-101 Slave Communication Module
Page 170 of 193 ProSoft Technology, Inc.
August 2, 2011
6.4 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
25 to 252 Maximum length L (number of octets)
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