ABB COM600 User Manual page 62

IEC 60870-5-101
Master (OPC) 3.3
62
Station Automation COM600
User's Manual
Transmission speed (control direction)
Unbalanced interchange cir-
cuit V.24/V.28 Standard
100 bit/s
200 bit/s
300 bit/s
600 bit/s
1200 bit/s
Transmission speed (monitor direction)
Unbalanced interchange cir-
cuit V.24/V.28 Standard
100 bit/s
200 bit/s
300 bit/s
600 bit/s
1200 bit/s
Link layer (network-specific parameter)
Frame format FT 1.2, single character 1 and the fixed time-out interval are used exclus-
ively in this companion standard.
Link transmission procedure
Balanced transmission
Unbalanced transmission
Frame
length
230 Maximum length L (number of octets)
The maximum frame length per Controlled Station can be up to 255.
Application layer
Unbalanced interchange cir-
cuit V.24/V,28 Recommended
if > 1200 bit/s
2400 bit/s
4800 bit/s
9600 bit/s
19200 bit/s
Unbalanced interchange cir-
cuit V.24/V,28 Recommended
if > 1200 bit/s
2400 bit/s
4800 bit/s
9600 bit/s
19200 bit/s
Address field of the link
not present
One octet
Two octets
Structured
Unstructured
1MRS756703
Balanced interchange circuit
X.24/X.28
2400 bit/s
4800 bit/s
9600 bit/s
19200 bit/s
38400 bit/s
56000 bit/s
64000 bit/s
Balanced interchange circuit
X.24/X.28
2400 bit/s
4800 bit/s
9600 bit/s
19200 bit/s
38400 bit/s
56000 bit/s
64000 bit/s