Link Layer - ABB RER601 Technical Manual

1MRS757105 B
10.1.4
RER601/603
Technical Manual
Appendix 2 IEC 60870-5-104 interoperability
Unbalanced Unbalanced
interchange Circuit V. interchange Circuit V.
24/V.28 Standard 24/V.28
Recommended if
>1200 bit/s
100 bit/s
200 bit/s
300 bit/s
600 bit/s
1200 bit/s
Transmission speed (monitor direction)
Unbalanced Unbalanced
interchange Circuit V. interchange Circuit V.
24/V.28 Standard 24/V.28
Recommended if >1
200 bit/s
100 bit/s
200 bit/s
300 bit/s
600 bit/s
1200 bit/s

Link layer

(Network-specific parameter, all options that are used are to be marked with "X").
Specify the maximum frame length. If a non-standard assignment of class 2
messages are implemented for unbalanced transmission, indicate the Type ID and
COT of all messages assigned to class 2.)
Frame format FT 1.2, single character 1 and the fixed time out interval are used
exclusively in this companion standard.
Link transmission
Balanced transmission
Unbalanced transmission
Table continues on next page
Balanced
interchange Circuit X.
24/X.27
2400 bit/s 2400 bit/s
4800 bit/s 4800 bit/s
9600 bit/s 9600 bit/s
19200 bit/s
38400 bit/s
Balanced
interchange Circuit X.
24/X.27
2400 bit/s 2400 bit/s
4800 bit/s 4800 bit/s
9600 bit/s 9600 bit/s
19200 bit/s
38400 bit/s
Address field of the link
not present (balanced
transmission only)
One octet
Section 10
56000 bit/s
64000 bit/s
56000 bit/s
64000 bit/s
79