Iec 60870-5-104; Function Range; Parameterization; Redundancy - Siemens SICAM MMU 7KG9663 Device Manual

9 Communication

9.3 IEC 60870-5-104

9.3 IEC 60870-5-104
The IEC 60870-5-104 protocol is also used for communication via the Ethernet interface. The IEC 60870-5-104
specification with a detailed explanation of the protocol is given in International Standard IEC 60870-5-104.
9.3.1

Function Range

NOTE
For information about IEC 60870-5-104 function range, see: http://powerquality.de,
pdf Document: "SICAM_MMU_104_CI_Guide_A1".
9.3.2

Parameterization

NOTE
The parameterization of the IEC 60870-5-104 protocol is described in chapter 7.3.4.2.
9.3.3

Redundancy

SICAM MMU provides 2 redundancy methods which can be selected during parameterization
(see table 7-10):
• Redundancy according to IEC 60870-5-104
• Redundancy with equally privileged connections
If no redundancy method is selected (parameter -none-), redundancy is not possible.
The redundancy methods are characterized as follows:
Table 9-23
Properties
Number of supported connec-
tions
Number of started channels
(with StartTD)
Switching mechanisms in the
device
190
Redundancy Methods in the SICAM MMU
Redundancy according to
2
1
The second channel can be con-
nected, but is stopped. Only test
telegrams are exchanged.
Yes
according to IEC 60870-5-104
normative
IEC 60870-5-104
Redundancy with equally
privileged connections
2
2 max.
No
Both connections are equally privi-
leged and independent of each
other.
SICAM MMU 7KG9663, Device Manual
E50417-H1040-C514-A3, Edition 01.2016